- Coverage Decisions starting in the early 1990s
- Total Employment by State and Last Railroad Employer (2006)
- Selected Employers (2005)
- Industry Information (2006)
- Reporting Marks (unofficial compilation) another (more up-to-date)
- UMLER (official reporting mark list)
- Circular No. OT-10 (2007-04-01)
- AL MS ABS Alabama Southern Railroad (2005-) owned by Watco Companies ← Kansas City Southern Railway
- MI OH AA Ann Arbor Railroad (Ann Arbor Acquisition Corporation?)
- AZ CA ARZC Arizona and California Railroad (-2000 → ParkSierra → 2002-) owned by RailAmerica
- AR LA ALM Arkansas, Louisiana and Mississippi Railroad
- ← ADN Ashley, Drew and Northern Railway (1912-1995/2002)
- AR MO AM Arkansas and Missouri Railroad
- AR OK ARS Arkansas Southern Railroad (2005-) owned by Watco Companies ← Kansas City Southern Railway
- MD VA BCR Bay Coast Railroad (2006-) subsidiary of Cassat Management owned by Baymark Construction ← ESHR Eastern Shore Railroad (1981-2006)
- AL FL BAYL Bay Line Railroad (1994-) ← ASAB Atlanta and St. Andrews Bay Railroad (-1993)
- ← AGRD A&G Railroad (1994-1996) operated by Railway Services ← AG Abbeville-Grimes Railway (1989-1993)
- NJ PA BDRV Belvidere and Delaware River Railway (1995-) ← Conrail
- KS OK BNG Blackwell Northern Gateway Railroad (2006-) ← BNR Blackwell and Northern Railway (2000-) ← South Kansas and Oklahoma Railroad
- IL IA BJRY Burlington Junction Railway formerly subsidiary of Burlington Shortline Railroad
- NC SC CALA Carolina Southern Railroad (1995-) subsidiary of Baltimore and Annapolis Railroad
- ← MRR Mid Atlantic Railroad (-1995)
- IN OH CIND Central Railroad of Indiana
- NY PA CNYK Central New York Railroad (1972/2005-) owned by Delaware Otsego ← Norfolk Southern Railway
- AL LA CGR CG Railway (ex-Central Gulf Railway) (2001-) operated by Terminal Railway ← Terminal Railway
- AL GA CHAT Chattahoochee Bay Railroad (2006-) owned by Genesee and Wyoming
- ← CHAT Chattahoochee and Gulf Railroad (2003-) ← ?
- ← HS H&S Railroad ← Hartford and Slocomb Railroad (-1992/1994)
- GA TN CCKY Chattooga and Chickamauga Railway
- NC VA CA Chesapeake and Albemarle Railroad (1990-) subsidiary of North Carolina and Virginia Railroad from 1999, owned by RailTex
- IL IN OH CFE Chicago, Fort Wayne and Eastern subsidiary of Central Railroad of Indianapolis
- IL IN CSS Chicago SouthShore and South Bend Railroad
- CO KS OK CVR Cimarron Valley Railroad (1996-) ← ?
- NY VT CLP Clarendon and Pittsford Railroad
- AL MS CAGY Columbus and Greenville Railway
- CT MA CSO Connecticut Southern Railroad (1996-) owned by RailTex ← ?
- DE MI NJ PA CR/CRE Consolidated Rail Corporation
- ← Ann Arbor Railroad (1895-1984)
- ← EL Erie Lackawanna Railway
- ← LHR Lehigh and Hudson River Railway
- ← LV Lehigh Valley Railroad
- ← Merchants Despatch Transportation (1936-1999)
- ← MGA Monongahela Railway (-1993)
- ← PC Penn Central Transportation
- ← NYC New York Central Railroad
- ← PRR Pennsylvania Railroad
- ← PAE/PE Peoria and Eastern Railway
- ← RDG Reading Company
- AR OK DQE De Queen and Eastern Railroad
- AR LA DSRR Delta Southern Railroad (1989-) ← ?
- CO UT Deseret Western Railway private carrier
- IA SD DAIR D&I Railroad
- AR IA LA TN EACH East Camden and Highland Railroad
- DE PA ESPN East Penn Railroad (2007-) owned by Regional Rail
- ← EPRY East Penn Railways (1995-2007) ← Commonwealth of Pennsylvania
- ← PRL Penn Eastern Rail Lines (1997-2007) owned by Emons Transportation Group
- ← BITY Bristol Industrial Terminal Railway (1992-1997) ← new trackage?
- ← CHTS Chester Valley Railway (1996-1997) ← Conrail
- ← LANO Lancaster Northern Railway (1996-1997) ← ?
- MI WI ELS Escanaba and Lake Superior Railroad
- IL IN EVWR Evansville Western Railway (2005-) owned by Paducah and Louisville Railway ← CSX
- NJ NY ExpressRail Staten Island
- FL GA FCRD First Coast Railroad (2005-) owned by Genesee and Wyoming ← CSX
- FL GA GFRR/GRFF Georgia and Florida RailNet (1999-) owned by North American RailNet
- ← Atlantic and Gulf Railroad subsidiary of Gulf and Ohio Railways (1991-1999) ← CSX
- ← Georgia and Florida Railroad (1995-1999) ← Norfolk Southern Railway
- AL GA GSWR Georgia Southwestern Railroad (1995-) owned by RailTex ← ?
- OK TX GNBC Grainbelt
- ID WA GRNW Great Northwest Railroad (2004-) owned by Watco Companies ← CSP Camas Prairie RailNet (1998-2004) owned by North American RailNet ← Camas Prairie Railroad (1909-1998)
- NH VT GMRC Green Mountain Railroad
- CT MA NY HRRC Housatonic Railroad
- ← DTRR Danbury Terminal Railroad (1993-1996) ← Conrail
- ID OR INPR Idaho Northern and Pacific Railroad (1993-) ← Union Pacific Railroad
- IN OH IERR Indiana Eastern Railroad (2005-) owned by Respondek Railroad ← CSX
- IL IN IHB Indiana Harbor Belt Railroad
- IN MI OH IN Indiana Northeastern Railroad (1992-)
- ← Hillsdale County Railway (-1992)
- ← PGRV Pigeon River Railroad (-1992)
- IL IN SCIH ISG-South Chicago and Indiana Harbor Railway (2002-) owned by International Steel Group ← CSL Chicago Short Line Railway (1901-2002)
- IL IN KBSR Kankakee, Beaverville and Southern Railroad
- KS MO KCT Kansas City Terminal Railway
- KS MO KAW Kaw River Railroad (2004-) owned by Watco Companies ← ?
- IL IA KJRY Keokuk Junction Railway
- AR OK TX KRR Kiamichi Railroad
- ← CHRC Chaparral Railroad (1990-1995)
- KY TN KWT KWT Railway
- CA OR LCR Lake County Railroad (1997-) ← Great Western Railway of Oregon (1987-1997) ← Great Western Railway of Colorado
- FL GA Live Oak, Perry and Georgia Railroad (1995-) operated by Georgia and Florida Railroad ← Norfolk Southern Railway
- AR LA LNW Louisiana and North West Railroad
- IN KY LIRC Louisville and Indiana Railroad (1994-) ← Conrail
- AL MS LXVR Luxapalila Valley Railroad (1996-) ← ?
- IL MO MRS Manufacturers Railway
- DE MD MDDE Maryland and Delaware Railroad
- MD PA MMID Maryland Midland Railway
- IN OH MAW Maumee and Western Railroad (1997-) ← ?
- AL MS MB/MNBR Meridian and Bigbee Railroad (now M&B Railroad?)
- MS TN MIS/MSCI Mississippi Central Railroad (ex-NTR Natchez Trace Railroad until 1993)
- MS TN MT/MTNR Mississippi Tennessee Railroad (2003-) owned by CGX, operates Mississippi Tennessee Holdings (2003-) ← Mississippi and Tennessee RailNet (1998-2003) ← Kansas City Southern Railway
- CA OR MNRR Modoc Northern Railroad
- CT MA NH VT NECR New England Central Railroad (1995-) ← CV/CVC/CVQ Central Vermont Railway (-1995)
- NH VT NHCR New Hampshire Central Railroad (1993-) ← North Stratford Railroad (-1989)
- ME NH NHN New Hampshire Northcoast
- NJ NY NYNJ New York New Jersey Rail (2006-) owned by Mid Atlantic New England Rail ← NYCH New York Cross Harbor Railroad Terminal (1983-2006) owned by Mid Atlantic New England Rail
- NC VA NCVA North Carolina and Virginia Railroad (1987-) owned by RailTex
- MN ND OTVR Otter Tail Valley Railroad
- AR LA OUCH Ouachita Railroad
- ID OR WA PCC Palouse River and Coulee City Railroad (1996-) ← ?
- ← BLMR Blue Mountain Railroad (1992-1998) ← Union Pacific Railroad
- ID WA POVA Pend Oreille Valley Railroad operated by Port of Pend Oreille
- MN WI PGR Progressive Rail (1996-)
- AL MS RRC?/RRCI Redmont Railway (1995-) owned by CAGY Industries operates Mississippi-Alabama Railroad Authority (1995-) ← Norfolk Southern Railway
- AL IL IN KY MO Respondek Railroad
- KY TN RJCM R.J. Corman Railroad/Memphis Line
- MS TN RJCK R.J. Corman Railroad/Tennessee Terminal (2006-) ← BNSF Railway
- IN OH RJCW R.J. Corman Railroad/Western Ohio Lines (1993-) ← ?
- ME NH VT SLR St. Lawrence and Atlantic Railroad
- AL TN SQVR Sequatchie Valley Railroad
- NJ PA SLRS SMS Rail Service (1994-) ← Pureland Association
- ← PJRL Penn Jersey Rail Lines (1997-2002) ← WMI Properties
- NM OK TX SW Southwestern Railroad (1990-) ← Atchison, Topeka and Santa Fe Railway
- AL TN TSRR Tennessee Southern Railroad
- KY TN TKEN Tennken Railroad
- IL MO TRRA Terminal Railroad Association of St. Louis
- AR TX TUST Texarkana Union Station Trust?
- NM TX TNMR Texas-New Mexico Railroad
- LA TX TIBR Timber Rock Railroad (1998-) ← BNSF Railway
- IL IN TPW Toledo, Peoria and Western Railway
- ← SFAL SF&L Railway (2001-2002) ← Toledo, Peoria and Western Railway
- MN SD TCWR Twin Cities and Western Railroad
- IL IN VVRR Vermilion Valley Railroad (2003-) operates FNG FNG Logistics ← CSX
- NY VT RUT/VTR/VTRL Vermont Railway
- NC VA VSRR Virginia Southern Railroad subsidiary of North Carolina and Virginia Railroad
- ID WA WIR Washington and Idaho Railway (2006-) ← Palouse River and Coulee City Railroad
- NY PA WCOR Wellsboro and Corning Railroad (1993-) ← ?
- MS TN WTNN West Tennessee Railroad subsidiary of WTNN from 2001
- NY PA WNYP Western New York and Pennsylvania Railroad (2001-) owned by Livonia Avon and Lakeville ← Norfolk Southern Railway
- OK TX WTJR Wichita, Tillman and Jackson Railway
- MD VA WV WW Winchester and Western Railroad (Virginia)
- MT ND YSVR Yellowstone Valley Railroad (2005-) owned by Watco Companies ← BNSF Railway
- OH PA YSRR Youngstown and Southeastern Railroad (2006-) owned by Indiana Boxcar, operates Eastern States Railroad ← Columbiana County Port Authority operated by CQPA Central Columbiana and Pennsylvania Railway (2001-?) owned by Arkansas Shortline Railroads; temporarily operated by Ohio and Pennsylvania Railroad when CC&P went bankrupt ← Railroad Ventures (1996-2000) ← YS Youngstown and Southern Railway (-1996/1999) owned by Pittsburgh and Lake Erie Properties from 1993, operated by Ohio and Pennsylvania Railroad
- Tourist lines
- CO NM Cumbres and Toltec Scenic Railroad (1982-) subsidiary of St. Louis Car Company until 1996 ← Scenic Railways (1971-1982)
- GrandLuxe Railway (2006-) sleeping car carrier ← American Orient Express Railway (1995-2006) ← American European Express (1989-1991)
- Out of service
- TN TX CTRN Central of Tennessee Railway and Navigation Company (1992-2000)
- LA MS GLSR Gloster Southern Railroad?
- IL IN GSOR/IHRC Indiana Hi-Rail (1981-1997) attempted to reorganize as WOHO Wabash and Ohio Railroad?
- IN OH Indiana and Ohio Rail Passenger Corporation (1996-)
- NH VT NHVT New Hampshire and Vermont Railroad (-1989)
- ← LVRC Lamoille Valley Railroad
- ← TSRD Twin State Railroad
- MI WI WAND Wisconsin and Michigan Railway (1992-1995)
- BNRQ/BNSF/FSFL/SFQ/SFSF BNSF Railway (1996-) (ex-Burlington Northern and Santa Fe Railway) ← BN/BNFE/BNQ/RBBN Burlington Northern Railroad (-1996)
- ← ATSF/SFLC/SFRC Atchison, Topeka and Santa Fe Railway (-1996)
- ← BNSF Acquisition (1996-) owned by BNSF Railway ← WCRC Washington Central Railroad (-1996)
- ← CBQ/RBBQ Chicago, Burlington and Quincy Railroad
- ← CS/RBCS Colorado and Southern Railway
- ← FWD Fort Worth and Denver Railway (1873-1982)
- ← GN Great Northern Railway
- ← MWRR Montana Western Railway (1986-2003/2005)
- ← NP Northern Pacific Railway
- ← SLSF St. Louis-San Francisco Railway
- ← SPS Spokane, Portland and Seattle Railway
- CSXE/CSXT CSX Transportation
- ← AWP Atlanta and West Point Rail Road
- ← BO Baltimore and Ohio Railroad (-1974)
- ← BOCT Baltimore and Ohio Chicago Terminal Railroad
- ← Staten Island Railroad (-1972) (ex-Staten Island Rapid Transit Railway until 1971)
- ← WM Western Maryland Railway
- ← CO Chesapeake and Ohio Railway
- ← Fort Myers Southern Railroad
- ← GA Georgia Railroad
- ← New York Central Lines (1999-2004) operated by CSX ← Conrail
- ← PHD Port Huron and Detroit Railroad
- ← RFP Richmond, Fredericksburg and Potomac Railroad
- ← SBD Seaboard System Railroad
- ← Three Rivers Railway (1992-1993) ← Pittsburgh and Lake Erie Railroad
- ← POV Pittsburgh and Ohio Valley Railway (-1994)
- ← TSNR Tyson Railroad (-1992)
- ← WA Western Railway of Alabama (1883-2002)
- CTIE/KCS Kansas City Southern Railway (1900-)
- ← ARW Arkansas Western Railway (-1992)
- ← FSVB Fort Smith and Van Buren Railway (-1992)
- ← GWWE Gateway Eastern Railway (1994-) owned by Gateway Western Railway ← ?
- ← GWWR Gateway Western Railway (1990-2001)
- ← GNA Graysonia, Nashville and Ashdown Railroad (1922-1993)
- ← KM Kansas and Missouri Railway and Terminal Company (-1992)
- ← LA Louisiana and Arkansas Railway (-1992)
- ← MAYW Maywood and Sugar Creek Railway (-1992)
- ← MidSouth (-1994)
- ← MDR MidLouisiana Rail (-1993)
- ← MSRC MidSouth Rail (-1993)
- ← SR SouthRail (-1993)
- ← TNR TennRail (-1993)
- ← CCR Corinth and Counce Railroad (-1991/1992)
- ← Southern Group (-1999)
- ← TM Texas Mexican Railway
- NS Norfolk Southern
- ← AGS Alabama Great Southern Railway (1977-)
- ← Chattanooga Terminal Railway (1935-1993)
- ← Louisiana Southern Railway (1897-1993)
- ← NOT New Orleans Terminal (1903-1993)
- ← AEC Atlantic and East Carolina Railway (1939-2003)
- ← BTC Birmingham Terminal (1901-1986)
- ← Camp Lejeune Railroad
- ← CG/GF Central of Georgia Railroad
- ← Atlanta Terminal (1903-1986)
- ← Georgia and Florida Railway (1963-1971)
- ← SA Savannah and Atlanta Railway (-1963)
- ← Wrightsville and Tennile Railroad (1883-1971)
- ← CHW Chesapeake Western Railway
- ← CNTP Cincinnati, New Orleans and Texas Pacific Railway (1881-)
- ← Chattanooga Traction Company (1911-1970)
- ← New River Railway (1966-1975)
- ← GSF Georgia Southern and Florida Railway
- ← GANO Georgia Northern Railway (-1993)
- ← Albany and Northern Railroad (1964-1971)
- ← Georgia, Ashburn, Sylvester and Camilla Railway (1922-1971)
- ← Live Oak, Perry and South Georgia Railway (-1993)
- ← GANO Georgia Northern Railway (-1993)
- ← Lake Erie and Fort Wayne Railroad (-1982)
- ← Mobile and Birmingham Railroad (1873-) operated by Norfolk Southern Railway
- ← NW Norfolk and Western Railway (1896-1998)
- ← ACY Akron, Canton and Youngstown Railway (-1982)
- ← Fairport, Painesville and Eastern Railroad (-1984)
- ← ITC Illinois Terminal Railroad
- ← NKP New York, Chicago and St. Louis Railroad
- ← Norfolk, Franklin and Danville Railway (1962-1983)
- ← PWV Pittsburgh and West Virginia Railway
- ← VGN Virginian Railway
- ← WAB Wabash Railroad
- ← Pennsylvania Lines (1999-2004) operated by Norfolk Southern Railway ← Conrail
- ← SOU Southern Railway
- ← CRN Carolina and Northwestern Railway (-1988)
- ← INT Interstate Railroad
- ← TAG Tennessee, Alabama and Georgia Railway
- ← State University Railroad
- ← TENN Tennessee Railway?
- ← AGS Alabama Great Southern Railway (1977-)
- UP/UPFE/UPP/UPR/UPY Union Pacific Railroad (1969-) (ex-SP/SPFE/SPQ Southern Pacific Transportation until 1998)
- ← CNW Chicago and North Western Transportation (-1995)
- ← DRGR?/DRGW Denver and Rio Grande Western Railroad (-1997)
- ← Los Angeles and Salt Lake Railroad (-1987)
- ← ARDP/ARMH/ARMN/MP Missouri Pacific Railroad (-1997)
- ← CEI Chicago and Eastern Illinois Railroad
- ← Galveston, Houston and Henderson Railroad (1882-1989)
- ← MI Missouri-Illinois Railroad
- ← BKTY/MKT/MKTT Missouri-Kansas-Texas Railroad
- ← OKKT Oklahoma, Kansas and Texas Railroad (1980-1989)
- ← Southwestern States Management (1978-1994)
- ← TNM Texas-New Mexico Railway
- ← Mount Hood Railway (-1987)
- ← OURD Ogden Union Railway and Depot Company (1888-1995)
- ← Oregon Short Line Railroad (-1987)
- ← Des Chutes Railroad (-1987)
- ← Oregon-Washington Railroad and Navigation Company (-1987)
- ← SSW St. Louis Southwestern Railway (1891-1997)
- ← DALT Dallas Terminal Railway
- ← SSWN Southern Pacific Chicago St. Louis (-1997)
- ← SI Spokane International Railroad (-1987)
- ← TP Texas and Pacific Railway
- ← Union Pacific Railroad (1897-1998)
- ← Visalia Electric Railroad (1904-1992)
- ← WP/WPMW Western Pacific Railroad
- ← WRPI Western Railroad Properties
- AL FL MS AGR Alabama and Gulf Coast Railway (1997-) ← BNSF Railway
- AK ARR Alaska Railroad
- NY PA BPRR Buffalo and Pittsburgh Railroad (1988-) owned by Genesee and Wyoming
- ← ALY Allegheny and Eastern Railroad (1992-2004) owned by Genesee and Wyoming ← Allegheny Railroad (-1994)
- ← BR Bradford Industrial Rail (1993-2004) owned by Genesee and Wyoming ← Conrail
- ← PSR Pittsburg and Shawmut Railroad (1996-2004) owned by Genesee and Wyoming
- ← Mountain Laurel Railroad (-1996)
- ← PS Pittsburg and Shawmut Railroad (-1996)
- ← Red Bank Railroad (-1996)
- CA OR CORP Central Oregon and Pacific Railroad (1994-) ← Southern Pacific Transportation
- IA MN NE SD WY DME Dakota, Minnesota and Eastern Railroad
- MT ND SD DMVW Dakota, Missouri Valley and Western Railroad
- IL IN EJE Elgin, Joliet and Eastern Railway
- FL FEC Florida East Coast Railway
- MI GLC Great Lakes Central Railroad (ex-TSBY Tuscola and Saginaw Bay Railway)
- ← Michigan Northern Railway (-1985/1988)
- IL IN KY INRD Indiana Rail Road
- IN MI OH IORY Indiana and Ohio Railway owned by RailTex
- ← Cincinnati Terminal Railway (1994-1997) owned by RailTex ← Conrail
- ← IOCR Indiana and Ohio Central Railroad (-2005) owned by RailTex
- ← INOH Indiana and Ohio Railroad (-1997) owned by RailTex
- IL IA KS MN MO WI ICE Iowa, Chicago and Eastern Railroad (2002-) owned by Cedar American Rail Holdings ← IMRL I&M Rail Link (1997-2002) ← Soo Line Railroad
- IL IA IAIS Iowa Interstate Railroad
- ← CBGR Council Bluffs Railway (ex-Great Western Railway of Iowa) subsidiary of Great Western Railway of Iowa
- ← Council Bluffs and Ottumwa Railway (-1991)
- ← Lincoln and Southern Railroad
- ← CBGR Council Bluffs Railway (ex-Great Western Railway of Iowa) subsidiary of Great Western Railway of Iowa
- CO KS KO Kansas and Oklahoma Railroad (2001-) ← CKRY Central Kansas Railway (1993-2001) ← ?
- ← KSW Kansas Southwestern Railway (1991-2000)
- CO KS KYLE Kyle Railroad
- AR KS MO MNA Missouri and Northern Arkansas Railroad (1992-) ← Missouri Pacific Railroad
- ID MT WA MRL Montana Rail Link
- ME VT MMA Montreal, Maine and Atlantic Railway (2003-)
- ← BAR Bangor and Aroostook Railroad (1891-2003)
- ← NVR Northern Vermont Railroad
- ← QSR Quebec Southern Railway
- ← CDAC Canadian American Railroad (1995-2003) ← Canadian Pacific
- ← BAR Bangor and Aroostook Railroad (1891-2003)
- CO KS NE NKCR Nebraska, Kansas and Colorado RailNet (1996-) ← ?
- NJ NY NYSW New York, Susquehanna and Western Railway
- ← Cooperstown and Charlotte Valley Railway (-1992)
- MN ND NPR Northern Plains Railroad (1996-) ← Soo Line Railroad
- KY PAL Paducah and Louisville Railway (1986-) ← Illinois Central Gulf Railroad
- CT ME MA NH NY VT Pan Am Railways ← GTIS Guilford Rail System
- ← BM Boston and Maine
- ← MEC Maine Central Railroad
- ← PTM Portland Terminal
- ← ST Springfield Terminal Railway
- OR PNWR Portland and Western Railroad (1995-) ← Southern Pacific Transportation
- CT MA NY RI PW Providence and Worcester Railroad
- ← CCCL Connecticut Central Railroad (1987-1998)
- ← Connecticut Rail Systems (1993-1993) owned by Providence and Worcester Railroad ← ?
- ← WRWK Warwick Railway
- MN ND RRVW Red River Valley and Western Railroad
- CA SJVR San Joaquin Valley Railroad
- ← Port Railroads operated by San Joaquin Valley Railroad ← Southern Pacific Transportation
- KS OK SKOL South Kansas and Oklahoma Railroad
- ← SEKR Southeast Kansas Railroad (1987-1998)
- TX TNER Texas Northeastern Railroad appears to have shrunk
- TX TXPF Texas Pacifico Transportation (2001-) ← South Orient Railroad (1994-2001), Texas Train Management (1993-2001)
- CO UT UTAH Utah Railway
- MD OH PA WV WE Wheeling and Lake Erie Railway
- IL WI WSOR Wisconsin and Southern Railroad
- ← Wisconsin and Calumet Railroad (1985-1997)
- ← Wisconsin Central Railroad (1980-1989) subsidiary of Southeastern Wisconsin Transportation
- ← Wisconsin Western Railroad (1982-1989)
- ← Wisconsin and Calumet Railroad (1985-1997)
- ALAB Alabama Railroad
- AF Alabama and Florida Railway (1992-) ← AFLR Alabama and Florida Railroad (-1992)
- ATN Alabama and Tennessee River Railway (2004-) owned by OmniTRAX ← CSX
- BS Birmingham Southern Railroad
- COEH Conecuh Valley Railroad (2001-) owned by Gulf and Ohio Railways ← SUAB Southern Alabama Railroad (1988-2001)
- EARY Eastern Alabama Railway
- Fairfield Southern
- HMCR Huntsville and Madison County Railroad Authority
- JEFW Jefferson Warrior Railroad
- Rapid Switching Services (1996-) (ex-Connersville Railroad) switching at Kerr-McGee
- Southern Electric Railroad
- TASD Terminal Railway Alabama State Docks
- TNHR Three Notch Railroad (2001-) owned by Gulf and Ohio Railways ← Alabama and Florida Railway
- WGCR Wiregrass Central Railroad
- Out of service
- Blasingame Brothers (1985-2002) ← Huntsville and Madison County Railroad
- Cheney Railroad (1989-1996)
- PBRR Pine Belt Southern Railroad (1995-) ← Central of Georgia Railroad
- Railway Services?? (1992-2006)
- Pacific and Arctic Railway and Navigation Company (1979-) operates WPY White Pass and Yukon Route
- APA Apache Railway
- AZCR Arizona Central Railroad (RRB says it became Clarkdale Arizona Central Railroad in 1997)
- AZER Arizona Eastern Railway
- BLKM Black Mesa and Lake Powell Railroad private railroad
- CBRY Copper Basin Railway
- SPSR San Pedro and Southwestern Railroad (2003-) subsidiary of San Pedro Railroad Operating Company, owned by Arizona Railroad Group ← SWKR Operating Company (1992-2003) (ex-San Pedro and Southwestern Railway until 1994)
- Tourist lines
- GCRX Grand Canyon Railway (1989-)
- Verde Canyon Railroad
- Out of service
- BHP Arizona Railroad (ex-MAA Magma Arizona Railroad until 1996)
- SMA San Manuel Arizona Railroad
- TCG Tucson, Cornelia and Gila Bend Railroad (1915-1985)
- WMSC White Mountain Scenic Railroad
- USG/YVR Yuma Valley Railway
- AKMD/DPRS? Arkansas Midland Railroad
- BXN Bauxite and Northern Railway
- CVRY/CVYR Caddo Valley Railroad (2000-) ← Arkansas Midland Railroad
- DR Dardanelle and Russellville Railroad
- DVS Delta Valley and Southern Railway
- DKS Doniphan, Kensett and Searcy Railway operated by Union Pacific Railroad
- EDW El Dorado and Wesson Railway
- FP Fordyce and Princeton Railroad
- FSR Fort Smith Railroad
- H&M International Transportation (1998-) in-plant switching
- LRPA Little Rock Port Authority Railroad
- LRWN Little Rock and Western Railway
- PNW Prescott and Northwestern Railroad
- WSR Warren and Saline River Railroad
- Tourist lines
- Eureka Springs and North Arkansas Railway (1981-)
- White River Scenic Railroad (1997-)
- Out of service
- AUG Augusta Railroad
- Helena Southwestern Railroad (-1984/1986)
GIS metadata (2004), property values (2008)
- ABL Alameda Belt Line operated by BNSF Railway, Union Pacific Railroad
- AL Almanor Railroad
- CFNR/CNRR California Northern Railroad (1993-2000 → ParkSierra → 2002-) owned by RailAmerica ← Southern Pacific Transportation
- CZRY Carrizo Gorge Railway (2001-) ← San Diego and Imperial Valley Railroad
- CCT Central California Traction owned by BNSF Railway, Union Pacific Railroad
- LAJ Los Angeles Junction Railway
- MCR/MR McCloud Railway (1992-) ← McCloud River Railroad (1897-1992)
- CWR Mendocino Railway (2004-) owned by Sierra Railroad ← California Western Railroad (1976-2003) (ex-Mendocino Coast Railway until 1988) subsidiary of CWR CWRR from 1996
- MET Modesto and Empire Traction
- NVRR Napa Valley Railroad
- NWP Northwestern Pacific Railroad ← Northwestern Pacific Railway (2000/2001-2001) ← Rail-Ways (1998-2001) ← Northwestern Pacific Railroad (1907-1998) (ex- North Coast Railroad Authority, 1992-1996)
- ← Eureka Southern Railroad (-1992)
- ← Petaluma and Santa Rosa Railroad (-1985)
- OTCR Oakdale Traction
- OTR Oakland Terminal Railway
- PHL Pacific Harbor Line (1997-) ← HBL Harbor Belt Line Railroad (1997?-1998)
- POAK Port of Oakland Railway?
- QRR Quincy Railroad (1986-) subsidiary of Sierra Pacific from 1995 ← Southern Pacific Transportation
- RPRC Richmond Pacific Railroad (ex- Parr Terminal Railroad)
- SAV Sacramento Valley Railroad (2008-) owned by Patriot Rail ← McClellan Business Park
- SDIY San Diego and Imperial Valley Railroad (1984-) ← San Diego and Arizona Eastern Transportation (1979-1984) owned by Kyle Railways ← San Diego and Arizona Eastern Railway (-1979/2001) owned by Southern Pacific Transportation until 1979, then San Diego Metropolitan Transit Development Board
- San Francisco Bay Railroad (2000-) (ex-LB Railco aka "Landbridge") ← San Francisco Port Commission ← Port Railroads (-1993)
- SCBG Santa Cruz, Big Trees and Pacific Railway (1985/1990-)
- SMV Santa Maria Valley Railroad (1911-) subsidiary of Coast Belle Rail from 2006
- Sierra Northern Railway (ex-YSLR Yolo Shortline Railroad)
- ← SERA Sierra Railroad (1995-) originally subsidiary of Coast Enterprises ← Eccles and Eastern Railroad (1994-1995) subsidiary of Sierra Pacific Coast Railway ← Santa Cruz, Big Trees and Pacific Railway
- ← Sierra Railroad (-1995) subsidiary of Silver Foot
- ← SERA Sierra Railroad (1995-) originally subsidiary of Coast Enterprises ← Eccles and Eastern Railroad (1994-1995) subsidiary of Sierra Pacific Coast Railway ← Santa Cruz, Big Trees and Pacific Railway
- SRYC Sierra Railway of California?
- Southern California Railroad switching for United States Gypsum
- STE Stockton Terminal and Eastern Railroad
- TRC Trona Railway owned by IMC Global
- TVRR Tulare Valley Railroad (1992-) operated by San Joaquin Valley Railroad ← Atchison, Topeka and Santa Fe Railway
- VCRR Ventura County Railroad (1998-) ← VCY Ventura County Railway (1911-1998)
- WFS West Isle Line (1998-) owned by Western Farm Services ← BNSF Railway
- YW Yreka Western Railroad
- Tourist lines
- FMWX Fillmore and Western Railway
- Napa Valley Wine Train (1987-)
- Sacramento Southern Railroad
- Sierra Entertainment (2003-)
- West Coast Railcar Services
- Out of service
- AFRR Amador Foothills Railroad (1998-2004) subsidiary of SierraPine owned by Sierra Pacific ← AMC Amador Central Railroad (-1997)
- LAPT Los Angeles Union Passenger Terminal (-?/2002)
- SUN Sunset Railway (-2004) operated by BNSF Railway, Union Pacific Railroad?
- CW Colorado and Wyoming Railway owned by CF&I Steel
- DRIR Denver Rock Island Railroad (1994?-) (ex-Denver Terminal Railroad)
- ← Platte Valley Railway?? subsidiary of Great Western Railway
- ← Denver Railway (-1993)
- ← Platte Valley Railway?? subsidiary of Great Western Railway
- Great Western Lines operated by Great Western Railway of Colorado
- GWR Great Western Railway of Colorado
- RRRR Rock and Rail (1998-) operates Royal Gorge Express (1998-) ← Union Pacific Railroad
- SLC San Luis Central Railroad
- SLRG San Luis and Rio Grande Railroad (2003-) owned by RailAmerica ← Union Pacific Railroad
- ← SSLV Southern San Luis Valley Railroad (1955-1996)
- VST Towner Railway subsidiary of V&S Railway ← CKP Colorado, Kansas and Pacific Railway (2000-2003) ← Colorado Department of Transportation
- Tourist lines
- Ansco Investment (1987-) operates Ski Train
- Cripple Creek and Victor Narrow Gauge Railroad
- Durango and Silverton Narrow Gauge Railroad
- Georgetown Loop Railroad
- Leadville, Colorado and Southern Railroad (ex-Leadville-Climax Shortline Railway?)
- Manitou and Pikes Peak Railway
- Platte Valley Trolley operated by Denver Rail Heritage Society
- Royal Gorge Route Railroad (1999-) (ex-Canon City and Royal Gorge Railroad)
- Out of service
- DUT Denver Union Terminal Railway (1912-2001)
- KVR Kern Valley Railroad? (2001-) operated by Colorado Central Railroad (2001-2002) ← Trinidad Railway
- Roaring Fork Railroad Holding Authority (1997-) ← Southern Pacific Transportation
- RMRR Rocky Mountain Railcar and Railroad (-1997)
- TRIN Trinidad Railway (1992-2000) operated by others ← Colorado and Wyoming Railway
ConnDOT: Ownership and Service (2007)
- BRFD Branford Steam Railroad
- CNZR Central New England Railroad (1995-) ← Connecticut Department of Transportation
- NAUG Naugatuck Railroad (1995-) ← State of Connecticut
- VALE Valley Railroad
- DCLR Delaware Coast Line Railroad (1999-) Maryland and Delaware Railroad ← Delaware Coast Line Railroad (1982-1994)
- WWRC Wilmington and Western Railroad
- WATC Washington Terminal
FDOT: Florida Railroad Company Contacts
- AN AN Railway (2002-) owned by Rail Management Corporation ← Apalachicola Northern Railroad (1903-2002)
- FCEN Florida Central Railroad
- FMID Florida Midland Railroad
- FNOR Florida Northern Railroad
- FWCR Florida West Coast Railroad
- JTCO Jacksonville Terminal?
- Kennedy Space Center Railroad
- Port Manatee Railroad owned by Manatee County Port Authority
- Port of Palm Beach District private carrier
- SJRT St. Johns River Terminal?
- SGLR Seminole Gulf Railway
- SCXF South Central Florida Express (1994-) ← SCFE South Central Florida Railroad (1990-1994) subsidiary of Brandywine Valley Railroad
- TTR Talleyrand Terminal Railroad (1996-) ← Jaxport Terminal Railway (1990-1996)
- Tourist lines
- Inland Lakes Railway (2005-)
- Out of service
GDOT: Railroad Maps (2005-2006)
- Albany Bridge (1993-) operated by others ← South Carolina Central Railroad, Georgia Great Southern Division
- ABR Athens Line
- CIRR Chattahoochee Industrial Railroad
- FCR Fulton County Railway (2004-) ← CSX
- GC Georgia Central Railway
- GMR Georgia Midland Railroad (2004-) owned by Atlantic Western Transportation ← Ogeechee Railway
- GNRR Georgia Northeastern Railroad
- GWRC Georgia Woodlands Railroad
- GITM Golden Isles Terminal Railroad (1998-) ← Colonel's Island Railroad (1983-1998)
- GRWR Great Walton Railroad
- HRT Hartwell Railroad (1995-) operated by Great Walton Railroad ← Norfolk Southern Railway
- HOG Heart of Georgia Railroad (2000-) ← Georgia Southwestern Railroad, State of Georgia
- LW Louisville and Wadley Railway
- MTCO Macon Terminal?
- RSOR Riceboro Southern Railway (2004-) ← CSX
- SM St. Mary's Railroad (1924-) (ex-Durango Railroad for a bit from 2000) owned by Durango Paper
- SMW St. Marys Railway West
- SAN Sandersville Railroad
- SAPT Savannah Port Terminal Railroad (1998-) ← Savannah State Docks Railroad (1953-1998)
- VR Valdosta Railway
- Out of service
- Atlanta, Stone Mountain and Lithonia Railway (1907-1997)
- Chattahoochee Valley Railway (1900-1993)
- ORC Ogeechee Railway (1989-2005) operated by Georgia Midland Railroad, Heart of Georgia Railroad from 2004
- BGCM BG&CM Railroad (2005-) ← Great Northwest Railroad
- City of Boise Railroad
- EIRR Eastern Idaho Railroad (1993-) ← Union Pacific Railroad
- ISRC Idaho and Sedalia Transportation (2004-) ← Idaho Northern and Pacific Railroad
- STMA St. Maries River Railroad (1980-)
- ← Idaho Western Railway (1985-2000) owned by StatesRail
IDOT: Illinois Railroad Map (2006)
- ALS Alton and Southern Railway
- BRC Belt Railway of Chicago
- BLOL Bloomer Shippers Connecting Railroad
- Bulkmatic Railroad (2002-) owned by Bulkmatic Transport, operated by Chicago Heights Switching (2002-) ← Bulkmatic Transport
- Calumet Transload and Railroad (2005-) ← ?
- C&C Railroad (2001-) ← Centerpoint Properties
- CIRY Central Illinois Railroad (2001-) ← Canadian Pacific Rail System, Union Pacific Railroad
- CCUO Chicago-Chemung Railroad
- CPC Chicago Port Railroad (2005-) ← Ozinga Transportation
- CRL Chicago Rail Link
- ← Chicago West Pullman Transportation (-1994) owned by OmniTRAX
- ← CWP Chicago, West Pullman and Southern Railroad (1900-1996)
- CTM Chicago Terminal Railroad (2007-) owned by Permian Basin Railways, Iowa Pacific Holdings ← Soo Line Railroad
- CUST Chicago Union Station owned by Amtrak
- CIR City of Rochelle Railroad operated by Burlington Junction Railway from 2006, earlier Total Logistic Control from 1999 ← RRCO Rochelle Railroad (1996-1998) ← Rochelle, Illinois
- CAEG Coffeen and Western Railroad
- COER Crab Orchard and Egyptian Railroad
- DT Decatur Junction Railway (1993-) ← Indiana Hi-Rail
- DOT Rail Service switching
- EIRC Eastern Illinois Railroad
- EFRR Effingham Railroad (1997-) ← Conrail
- Hooper-Myron operated by Kankakee, Beaverville, and Southern Railroad (2000-) ← Illiana Railroad Service (1990-2000) operated by Kankakee, Beaverville, and Southern Railroad
- IR Illinois RailNet (1997-) owned by North American RailNet ← BNSF Railway
- IMRR Illinois and Midland Railroad (1996-) ← Chicago and Illinois Midland Railway (1986-1996)
- ILW Illinois Western Railroad
- Joliet Junction Railroad switching ← Elgin, Joliet and Eastern Railway
- JE Joppa and Eastern Railroad (1991-) owned by Electric Energy, operated by Burlington Northern Railroad ← new trackage
- KKRX Kaskaskia Regional Port District Railroad
- MJ Manufacturers' Junction Railway
- North American Industrial Railway
- PPU Peoria and Pekin Union Railway operated by Tazewell and Peoria Railroad from 2004
- Peoria, Peoria Heights and Western Railroad ← PRY Pioneer Industrial Railway (1998-) ← Peoria and Pekin Union Railway
- RVPR Riverport Railroad (1999-) ← Jo-Daviess/Carroll County Local Redevelopment Authority
- STR Shawnee Terminal Railway (1996-) ← CTML Cairo Terminal Railroad (1982-1996)
- SIRS Shelbyville Industrial Rail Spur?
- TZPR Tazewell and Peoria Railroad (2004-) owned by Genesee and Wyoming ← Peoria and Pekin Union Railway
- VRRC Vandalia Railroad
- Tourist lines
- Out of service
INDOT: Indiana Railroads (2008)
- AWW Algers, Winslow and Western Railway
- Bee Line Railroad operated by Kankakee, Beaverville and Southern Railroad
- BFRR Big 4 Terminal Railroad ← Wabash Central Railroad
- Browns, Grayville and Poseyville Railway
- CKSI Carthage, Knightstown and Shirley Railroad?
- CEIW Central Indiana and Western Railroad
- CERA Central Railroad of Indianapolis
- CKIN Chesapeake and Indiana Railroad (2004-) owned by Indiana Boxcar ← CSX
- City of Auburn Port Authority
- CNUR C&NC Railroad (1997-) ← Norfolk and Western Railway
- DCRR Dubois County Railroad (1993-) ← Southern Indiana and Ohio River Railway (1988-1993; never operated) ← ?
- EWR Elkhart and Western Railroad (2001-) owned by Pioneer Railcorp ← Michigan Southern Railroad
- FC Fulton County Railroad extended along Norfolk and Western Railway trackage in 1998
- HCRR Honey Creek Railroad (1993-) ← Conrail
- Hoosier Heritage Port Authority operated by Indiana Rail Road?
- HOS Hoosier Southern Railroad (1995-) subsidiary of Perry County Port Authority ← ?
- Illinois Indiana Development (2000-) operated by Chicago South Shore and South Bend Railroad ← North Shore Railway
- ICRK Indian Creek Railroad
- ISRR Indiana Southern Railroad owned by RailTex
- ISW Indiana Southwestern Railway (2000-) owned by Pioneer Railcorp
- ← AB Rail Investments
- ← EVT Evansville Terminal (1996-2000) ← ?
- IU Indianapolis Union Railway?
- KTR Kendallville Terminal Railway (2001-) owned by Pioneer Railcorp ← Michigan Southern Railroad
- Kokomo Rail (1993-) operated by Central Railroad of Indianapolis ← CSX
- LMIC Lake Michigan and Indiana Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel; was subsidiary of Keystone Railroad until 2001 ← Burns Harbor Shortline Railroad?
- LER Logansport and Eel River Short-Line
- LNAC/LNAL Louisville, New Albany and Corydon Railroad (1888-) subsidiary of Lucas Rail Lines, subsidiary of BPM Rail from 1988 to 2006
- CMPA Madison Railroad
- Marksman Corporation (1997-) operated by Toledo, Peoria and Western Railway ← J. K. Line
- MGRI MG Rail ← Clark Shortline Railroad?
- Monon Rail Preservation (1998-) operated by Indiana Rail Road ← CSX
- OVR Ohio Valley Railroad
- OTCO Owensville Terminal (1996-) owned by RailAmerica, operated by Huron and Eastern Railway ← Poseyville and Owensville Railroad (-1996)
- SIND Southern Indiana Railway
- Southwind Shortline Railroad
- SCS Squaw Creek Southern Railroad (2002-) owned by Respondek Railroad ← Norfolk Southern Railway
- ← Yankeetown Dock (1953-) private carrier operated by Amax Coal
- WBCR Wabash Central Railroad (1997-) ← ?
- WSRY Winamac Southern Railway (1993-) ← Conrail
- Tourist lines
- Out of service
- ARE A&R Line (1995-) operated by J. K. Line ← Winamac Southern Railway
- BRRC Borinstein Railroad
- COOK Cook Transit
- Corydon Scenic Railroad
- Ferdinand Corporation (1990-2006) ← FRDN Ferdinand and Huntingburg Railroad (-1990) owned by Itel Rail
- JKL J. K. Line?
- Muncie and Western Railroad (1937-1995)
- PSLL Plymouth Short Line
- TBER Terre Haute, Brazil and Eastern Railroad (1987-1993)
Iowa DOT: Profiles of Railroads Operating in Iowa (2000)
- APNC Appanoose County Community Railroad
- BSVY Boone and Scenic Valley Railroad
- CBEC Railway (1997-) ← ISR Iowa Southern Railroad
- CIC Cedar Rapids and Iowa City Railway
- D&W Railroad (2003-) operated by Iowa Northern Railway ← Union Pacific Railroad
- IANR Iowa Northern Railway
- IANW Iowa Northwestern Railroad (2001-) subsidiary of General Railway ← Dickinson Osceola Railroad Association (2001-2001) ← Union Pacific Railroad
- IARR Iowa River Railroad (2006-) ← North Central Railway Association, Union Pacific Railroad
- IATR Iowa Traction Railroad
- ← Iowa Terminal Railroad (-1987)
- KEWA Kewash Railroad
- SCT Sioux City Terminal Railway
- SIRR Southern Industrial Railroad?
- Tourist lines
- Keokuk Electric Railway (1993-)
- Out of service
- Iowa Transfer Railway (1905-1994)
- Narragansett Railway (1988-1991)
KDOT: Railroads in Kansas, Kansas Rail Plan (2006)
- Blue Rapids Railway (1994-) owned by Georgia-Pacific, operated by Mid-Michigan Railroad, Northeast Kansas and Missouri Division ← Union Pacific Railroad
- BHWY Boothill and Western Railway (2000-) owned by Right Cooperative Association ← Dodge City Ford and Bucklin Railroad
- GCW Garden City Western Railway
- ← Garden City Northern Railway (-1991)
- HN Hutchinson and Northern Railway
- KE Kansas Eastern Railroad (1996-) operated by South Kansas and Oklahoma Railroad ← Burlington Northern Railroad
- New Century AirCenter
- VSR V&S Railway (2000-) operated by Kansas Southern Railway until 2002 ← Central Kansas Railway
- ← Kiowa, Hardtner and Pacific Railroad (1908-2003)
- WTA Wichita Terminal Association owned by BNSF Railway, Union Pacific Railroad
- WUT Wichita Union Terminal Railway?
- Tourist lines
- Out of service
- Atlantic and Pacific Railroad had trackage rights over Kansas and Oklahoma Railroad between Chase and Silica [1]
- KCTV KCT Railway (1990-1991)
- T and P Railway (-1993) operated by Southeast Kansas Railroad
- Cando Contracting switching
- CARR Carrollton Railroad owned by CSX?
- FVRR Fredonia Valley Railroad
- Glasgow Railway operated by CSX
- HSRR Hardin Southern Railroad (1993-) ← JJRD J&J Railroad (-1993)
- KT Kentucky and Tennessee Railway
- PI Paducah and Illinois Railroad
- RJCR R.J. Corman Railroad/Bardstown Line (1987-) ← CSX
- RJCC R.J. Corman Railroad/Central Kentucky Lines (2003-) ← LXOH Lexington and Ohio Railroad (1996-2003) ← Norfolk Southern Railway
- R.J. Corman Railroad Switching (2001-) switching for ThyssenKrupp Budd
- TTIS Transkentucky Transportation Railroad
- WKRL Western Kentucky Railway (1995-) ← TWRY Tradewater Railway (-1995)
- Out of service
- AKDN Acadiana Railway
- LDRR Louisiana and Delta Railroad
- LAS Louisiana Southern Railroad (2005-) owned by Watco Companies ← Kansas City Southern Railway
- NOGC New Orleans and Gulf Coast Railway (1999-) owned by Rio Grande Pacific ← NOLR New Orleans Lower Coast Railroad (1991-1999)
- NOPB New Orleans Public Belt Railroad
- Southern Gulf Railway (2000-) owned by Entergy, operated by Timber Rock Railroad ← ?
- Out of service
- EMRY Eastern Maine Railway (1995-) owned by New Brunswick Railway ← Canadian Pacific
- MERR Maine Eastern Railroad (2003-) subsidiary of Morristown and Erie Railway ← Safe Handling Rail (2000-2003) ← Maine Coast Railroad (1990-2000)
- Sappi Fine Paper North America subsidiary of S.D. Warren, operated by Cascade Transportation (2002-) switching ← Maine Central Railroad, Springfield Terminal Railway
- TI Turners Island
- VB Van Buren Bridge
- Out of service
- AVL Aroostook Valley Railroad (1902-1997)
- BML Belfast and Moosehead Lake Railroad (1867-) subsidiary of Railstar from 2003
- CTN Canton Railroad
- GCK Georges Creek Railway
- PBR Patapsco and Back Rivers Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel
- Tourist lines
- WS Walkersville Southern Railroad (1993-) ← State of Maryland
- BCLR Bay Colony Railroad
- BTCO Boston Terminal?
- EBSR East Brookfield and Spencer Railroad (2004-) ← CSX
- FRVT Fore River Transportation (2001-) ← QBT Quincy Bay Terminal (1992-2001) ← Fore River Railway (1986-1992)
- GU Grafton and Upton Railroad
- MCER Massachusetts Central Railroad
- MC Massachusetts Coastal Railroad (2008-) ← Commonwealth of Massachusetts
- PVRR Pioneer Valley Railroad
- Tourist lines
- Cape Cod Central Railroad (1999-)
- ADBF Adrian and Blissfield Rail Road ← Lenawee County Railroad (1977-1990)
- CHS Charlotte Southern Railroad (2000-) owned by Michigan Short Lines ← Adrian and Blissfield Rail Road
- DC Delray Connecting Railroad
- DCON Detroit Connecting Railroad (2000-) owned by Michigan Short Lines ← Adrian and Blissfield Rail Road
- FSUD Fort Street Union Depot?
- GR Grand Rapids Eastern Railroad (1993-) ← Central Michigan Railroad
- HESR Huron and Eastern Railway owned by RailAmerica
- ← CMGN Central Michigan Railway
- ← SGVY Saginaw Valley Railway (1991-2004) owned by RailAmerica
- LSRC Lake State Railway
- ← DM Detroit and Mackinac Railway (1984-1992)
- LSI Lake Superior and Ishpeming Railroad
- LIRR Lapeer Industrial Railroad (2000-) owned by Michigan Short Lines ← Adrian and Blissfield Rail Road
- MQT Marquette Rail (2005-) ← CSX
- MAL Michigan Air-Line Railway (1984-) (ex-CRLE Coe Rail until 2006) owned by Railmark Holdings from 2006
- Michigan Central Railway planned
- MS Michigan Shore Railroad
- MSO Michigan Southern Railroad subsidiary of Wabash and Western Railway from 1996 (ex-Wabash and Western Railway)
- MMRR Mid-Michigan Railroad owned by RailTex
- ← Grand Rapids Eastern Railroad (1993-1998)??
- ← Michigan Shore Railroad (1990-1998)??
- Mineral Range Railroad
- SBS Saginaw Bay Southern Railway (2005-) owned by J&JG Holding Company, operated by Lake State Railway ← CSX
- TCBY Tecumseh Branch Connecting Railroad
- WMI West Michigan Railroad (ex-WJ West Jersey Railroad) ← KLSC Kalamazoo, Lake Shore and Chicago Railroad (1987-1995) subsidiary of Southwestern Michigan Railroad
- WYS Wyandotte Southern Railroad?
- Tourist lines
- Coopersville and Marne Railway freight operated by Grand Rapids Eastern Railroad ← Central Michigan Railway
- Michigan State Trust for Railway Preservation
- Train Travel (1989-)
- Out of service
- LTCR Leelanau Transit
- Ludington and Northern Railway (1901-1997)
- Marquette and Huron Mountain Railroad (-1988)
- Union Belt of Detroit (-1992)
- ALT Airlake Terminal Railway (2002-) owned by Progressive Rail ← Progressive Rail
- CVRC Cannon Valley Railroad subsidiary of Progressive Rail
- Cliffs Erie Railroad
- CTRR Cloquet Terminal Railroad (2002-) ← DNE Duluth and Northeastern Railroad (1898-2002)
- IBT International Bridge and Terminal
- MNNR Minnesota Commercial Railway
- MDW Minnesota, Dakota and Western Railway
- MNN Minnesota Northern Railroad (1996-) ← Burlington Northern Railroad
- MPLI Minnesota Prairie Line (2002-) owned by Twin Cities and Western Railroad ← Minnesota Valley Regional Rail Authority
- Minnesota River Bridge (1996-) operated by Twin Cities and Western Railroad ← Soo Line Railroad
- MSWY Minnesota Southern Railway (2000-) ← Buffalo Ridge Regional Rail Authority (2000-2000) ← NRR Nobles Rock Railroad (1993-2000) subsidiary of Rail Equipment and Transportation until 1998; owned by Cascade Railcorp from 1998 ← Buffalo Ridge Regional Rail Authority
- ← Buffalo Ridge Railroad (1989-1992)
- MSL Montgomery Short Line
- NLR Northern Lines Railway (2005-) ← BNSF Railway
- Northshore Mining
- SCXY St. Croix Valley Railroad (1997-) owned by RailAmerica ← BNSF Railway
- SPUD St. Paul Union Depot (?)
- Tourist lines
- Out of service
- DAKR Dakota Rail (1982-2000)
- MCTA Minnesota Central Railroad (1994-2000) ← MNVA Railroad (-1994)
- CNOW Columbia and Northern Railway
- GTRA Golden Triangle Railroad
- GTR Great River Railroad operated by Rosedale-Bolivar County Port Commission
- KSRY Kosciusko and Southwestern Railway (2000-) subsidiary of Mississippi Rail Group ← State of Mississippi
- MDS Meridian Southern Railway (2000-) ← Kansas City Southern Railway
- MD/MSDR Mississippi Delta Railroad subsidiary of Gulf and Ohio Railways from 1985 until 2001, then of C&J Railroad
- MSE Mississippi Export Railroad
- MSV Mississippi and Skuna Valley Railroad
- MSR Mississippi Southern Railroad (2005-) owned by Watco Companies ← Kansas City Southern Railway
- MISS/MSRW Mississippian Railway Cooperative
- OAR Old Augusta Railroad (1982-) owned by Georgia-Pacific until 2004, Koch Cellulose from 2004
- PRV Pearl River Valley Railroad
- PBVR Port Bienville Railroad
- TISH Tishomingo Railroad (2000-) ← ?
- VSOR Vicksburg Southern Railroad (2006-) owned by Watco Companies ← Kansas City Southern Railway
- Out of service
- CLSL Columbia and Silver Creek Railroad (1982-1992)
- BSDA Bi-State Development Agency Railroad (1989-) operated by Respondek Railroad, formerly by Railroad Switching Services of Missouri
- CMR Central Midland Railway (2001-) owned by Progressive Rail operates MOC Missouri Central Railroad (1999-) ← operated by General Railway (1999-2001) ← LKWR Lackland Western Railroad never operated ← Union Pacific Railroad
- CT Columbia Terminal Railroad
- GCRC Golden Cat Railroad?
- IC&E-Kansas City Southern Joint Agency (ex-Soo-Kansas City Southern Joint Agency, then I&M-Kansas City Southern Joint Agency)
- Jackson, Gordonville and Deltaville Railroad operated by Jackson and Southern Railroad ← Golden Cat Railroad, Jackson Industrial Development
- KCTL Kansas City Transportation (2006-) owned by Kansas City Terminal Railway ← ?
- MNC Missouri North Central Railroad subsidiary of Motive Rail ← CBRM Chillicothe-Brunswick Rail Maintenance Authority (1987-1990, 1994-) subsidiary of GHRD Green Hills Rural Development ← Wabash and Grand River Railway (1990-1993)
- MVP Missouri and Valley Park Railroad (2002-) owned by American Railroads ← BNSF Railway
- Motive Rail (1998-) ← SEMO Port Railroad
- OVRR Ozark Valley Railroad (2007-) ← Kansas City Southern Railway
- RSM Railroad Switching Services of Missouri
- SLOI St. Louis, Iron Mountain and Southern Railway
- SE SEMO Port Railroad (1994-) owned by Southeast Missouri Regional Port Authority, operated by Respondek Railroad ← Missouri Pacific Railroad
- SSJR Sheffield Station Junction Railway subsidiary of Locomotive Preservation and Operating Group
- TransitAmerica Services (2005-) owned by TransitAmerica, switching for Herzog Contracting Corp. ← Herzog Contracting
- Tourist lines
- Branson Scenic Railway (1993-)
- Out of service
- Bootheel Regional Rail (1995-1996) ← Burlington Northern Railroad
- JSRC Jackson and Southern Railroad (-1993)
- Kansas City Public Service Freight Operation
- Lakeside Transportation (1993-1994) ← Norfolk and Western Railway
- Butte, Anaconda and Pacific Railway (ex-RARW Rarus Railway)
- CM Central Montana Rail
- MMT Mission Mountain Railroad (2003-) owned by Watco Companies ← BNSF Railway
- Tongue River Railroad planned
- Tourist lines
- Missoula Gulch and Butte Hill Line operated by Butte/Anaconda Historic Park and Railroad (1987-)
- BRAN Brandon Corporation
- FNW Fremont Northwestern Railroad
- NRI Nebkota Railway (1994-) ← Chicago and North Western Transportation
- NCRC Nebraska Central Railroad (1993-) ← Union Pacific Railroad
- NENE Nebraska Northeastern Railway (1996-) owned by TNW Corporation ← Burlington Northern Railroad
- OLB Omaha, Lincoln and Beatrice Railway
- SLGG S&L Railroad (2002-) owned by Progress Rail ← Sidney and Lowe Railroad (1982-2002)
- Out of service
- FWRY Fillmore Western Railway (1996-1999) ← ?
- Out of service
- Robinson Nevada Railroad (1996-) (ex-BHP BHP Nevada Railroad) ← NN Northern Nevada Railroad (1995-1996) ← Nevada Northern Railway
NHDOT: Railroads, State Rail Plan (2001)
- CCRR Claremont Concord Railroad
- Fraser N.H. owned by Fraser Papers, operated by St. Lawrence and Atlantic Railroad ← BMS Berlin Mills Railway (1970-1999)
- Milford-Bennington Railroad
- NEGS New England Southern Railroad
- Tourist lines
- Bayshore Terminal switching
- BRW Black River and Western Railroad
- Bound Brook and Raritan River Railroad (1995-) switching for Union Carbide
- CMSL Cape May Seashore Lines
- EJR East Jersey Railroad and Terminal Company
- HIRR Hainesport Industrial Railroad (2005-) ← Hainesport Industrial Park Railroad Association
- ME Morristown and Erie Railway
- New Jersey and Northern Railway switching
- NJRC New Jersey Rail Carrier (2004-) ← Columbia Terminals
- NYGL New York and Greenwood Lake Railway (1996-) ← Conrail
- PJR Port Jersey Railroad
- Rahway Valley Railroad operated by Morrestown and Erie Railway? ← Rahway Valley Company (1909-1992)
- RCRY Raritan Central Railway (2001-) ← Durham Transport (1994-2001) ← ?
- SDBB Somerset Terminal Railroad operated by Standard Terminal Railroad of New Jersey?
- SRNJ Southern Railroad of New Jersey (1991-) subsidiary of JP Rail ← Shore Fast Line (-1991)
- WW Winchester and Western Railroad (New Jersey)
- Out of service
- Out of service
- APD Albany Port Railroad
- ARA Arcade and Attica Railroad
- BH B&H Rail (2001-) (ex-Conhocton Valley Railroad) owned by Livonia, Avon and Lakeville Railroad ← Livonia, Avon and Lakeville Railroad ← Bath and Hammondsport Railroad (1872-1994)
- BKRR Batten Kill Railroad
- BSOR Buffalo Southern Railroad
- DLWR Depew, Lancaster and Western Railroad
- FRR Falls Road Railroad (1996-) owned by Genesee Valley Transportation ← Conrail
- FGLK Finger Lakes Railway (1995-) ← Conrail
- LAL Livonia, Avon and Lakeville Railroad
- ← CGNE Champagne Railroad (1993-1996) ← Conrail
- LBR Lowville and Beaver River Railroad
- MSTR Massena Terminal Railroad
- MNJ Middletown and New Jersey Railway
- MHWA Mohawk, Adirondack and Northern Railroad
- NYA New York and Atlantic Railway (1997-) owned by Anacostia and Pacific ← Long Island Rail Road
- NYER New York and Eastern Railway
- NYLE New York and Lake Erie Railroad
- NYOG New York and Ogdensburg Railway (1998-) ← St. Lawrence and Raquette River Railroad (1990-1998) ← NSL Norwood and St. Lawrence Railroad
- ONCT Ontario Central Railroad
- OMID Ontario Midland Railroad
- OHRY Owego and Harford Railway
- RSR Rochester and Southern Railroad
- SNY SMS Rail Lines of New York
- SOM Somerset Railroad
- South Brooklyn Railway
- SB South Buffalo Railway
- Tourist lines
- Cooperstown and Charlotte Valley Railroad (1999-) owned by Leatherstocking Railway Historical Society
- Out of service
- Burgundy Champagne Railroad? (1994-)
- RSB Rochester Subway
- TIRL Tonawanda Island Railroad (1983-1996)
- ACWR Aberdeen, Carolina and Western Railway
- ← CHRR Chesapeake Railroad (1995-1999) ← Maryland Department of Transportation
- AR Aberdeen and Rockfish Railroad
- ← Dunn-Erwin Railway (1988-1989)
- ARC Alexander Railroad
- ATW Atlantic and Western Railway
- CWCY Caldwell County Railroad (1994-) owned by Thermal Belt Railway ← Carolina and Northwestern Railroad (1990-1994)
- CF Cape Fear Railways
- CLNA Carolina Coastal Railway
- CTR Clinton Terminal Railroad (1995-) subsidiary of Clinton Industrial Switching ← CSX?
- Craggy Mountain Line
- GSM Great Smoky Mountains Railroad
- HPTD High Point, Thomasville and Denton Railroad
- LRS Laurinburg and Southern Railroad (1909-) owned by L&S Holding Company until 1998
- MHSF Morehead and South Fork Railroad (2005-) ← CRIJ Carolina Rail Service (1994-2005) owned by Canal Industries ← Carolina Rail Services (-1994) owned by Southern Terminal Holdings
- ← BMH Beaufort and Morehead Railway (2001-2002) ← NCPR North Carolina Ports Railway Commission (2000-2001/2002) ← Beaufort and Morehead Railway (1991-1999) ← Beaufort East Coast Railroad (-1991)
- NCYR Nash County Railroad (ex-Rocky Mount and Western Railroad)
- North Carolina Railroad operated by Norfolk Southern Railway
- RSNR Red Springs and Northern Railroad
- TBRY Thermal Belt Railway subsidiary of Southeast Shortlines
- WTRY Wilmington Terminal Railroad
- WSS Winston-Salem Southbound Railway
- YVRR Yadkin Valley Railroad subsidiary of Piedmont and Atlantic Railroad
- Out of service
- North Carolina Ports Railway Commission (1980-1988)
- WAR Warrenton Railroad (1976-1985)
- CHS Holdings (2002-) operated by Cenex Harvest States Cooperatives (switching) ← J. K. Line
- DN Dakota Northern Railroad (2006-) owned by KBN Incorporated ← BNSF Railway
- MRI Mohall Railroad (2000-) operated by Northern Plains Railroad ← BNSF Railway
- MHC Mohall Central Railroad (2005-) operated by Northern Plains Railroad ← BNSF Railway
- RL Rutland Line (1997-) operated by Red River Valley and Western Railroad ← BNSF Railway
- AB Akron Barberton Cluster Railway (1994-) ← ABB Akron and Barberton Belt Railroad (1902-1994)
- ASRY Ashland Railway
- ACJR Ashtabula, Carson and Jefferson Railroad
- CCRA Camp Chase Industrial Railroad (1994-) ← Conrail
- Carey Short Line (1993-) operated by others ← Conrail
- CCRL Cleveland Commercial Railroad (2004-) ← CVRI Connotton Valley Railway (2002-2004?) ← Wheeling and Lake Erie Railway
- CUOH Columbus and Ohio River Rail Road
- Delphos Terminal (1997-) owned by Central Soya, operated by Conrail (later CSX, now Chicago, Fort Wayne and Eastern) ← Indiana Hi-Rail
- Economic Development Rail Corporation operated by Youngstown and Austintown Railroad
- FIR Flats Industrial Railroad (1996-) ← Conrail
- GMRY Great Miami and Scioto Railway (1994-) ← Indiana and Ohio Eastern Railroad (1987-1993)
- Great Miami and Western Railway (1994-) switching contract with Champion International ← Great Miami Incorporated (1988-1994)
- CWRO ISG-Cleveland Works Railway (2002-) owned by International Steel Group
- ← CUVA Cuyahoga Valley Railway (1905-2002)
- ← RT River Terminal Railway (1909-2002)
- LT Lake Terminal Railroad
- MVRY Mahoning Valley Railway
- NSR Newburgh and South Shore Railroad
- NTRY Nimishillen and Tuscarawas (1999-) ← Nimishillen and Tuscarawas Railway (-1999) owned by Republic Engineered Steels
- NOW Northern Ohio and Western Railway (1995-) ← ?
- OHIC Ohi-Rail
- OHCR Ohio Central Railroad
- ← PLW PL&W Railroad (1993-1995) ← Pittsburgh and Lake Erie Railroad, Youngstown and Southern Railway
- OHPA Ohio and Pennsylvania Railroad (1995-) ← ?
- OSRR Ohio Southern Railroad
- ORA Ormet Railroad
- Republic N&T Railroad (ex-PAV Railroad until 2004) (2003-) owned by PAV Republic ← N&T Railway (2003-2003) owned by Republic Engineered Products ← Nimishillen and Tuscarawas (1999-2002) ← Nimishillen and Tuscarawas Railway (-1999)
- RJCL R.J. Corman Railroad/Cleveland Line (1995-) ← ?
- South Charleston Railroad owned by Clark Landmark, operated by Indiana and Ohio Central Railroad ← Conrail
- SYRR Sandusky River Railroad
- SBLN Sterling Belt Line Railway
- US Rail
- WTRM Warren and Trumbull Railroad (1994-) leases Economic Development Rail II Corporation, operated by Ohio Central Railroad ← CSX
- West Central Ohio Port Authority (1994-) operated by Indiana and Central Ohio Railroad ← Conrail
- YARR Youngstown and Austintown Railroad
- YB Youngstown Belt Railroad (1997-) operated by Ohio Central Railroad ← Warren and Trumbull Railroad
- Tourist lines
- Out of service
- PF Pioneer and Fayette Railroad (1933-1991)
- AOK Arkansas-Oklahoma Railroad (1996-) ← State of Oklahoma
- ATLT AT&L Railroad
- FMRC Farmrail
- HE Hollis and Eastern Railroad (1959-)
- NOKL Northwestern Oklahoma Railroad
- ORR Osage Railroad subsidiary of Southeast Kansas Railroad
- SS Sand Springs Railway
- SLWC Stillwater Central Railroad (1998-) ← State of Oklahoma
- TOE Texas, Oklahoma and Eastern Railroad
- TSU Tulsa-Sapulpa Union Railway
- WFEC Railroad (1997-) operated by Texas, Oklahoma and Eastern Railroad ← new trackage
- Out of service
- North Central Oklahoma and Midlands Railway (1990-1990/1994) never operated
- Oklahoma Eastern Railway (1991-) subsidiary of Sunbelt Railroad Historical Trust (never operated)
ODOT: railroads operating in Oregon (January 2008)
- AERC Albany and Eastern Railroad (1998-) ← BNSF Railway
- COP City of Prineville Railway
- HLSC Hampton Railway (1995-) operated by Willamette and Pacific Railroad ← Willamina and Grand Ronde Railway
- Klamath Northern Railway (1995-) owned by Crown Pacific ← Southern Pacific Transportation ← Klamath Northern Railway? (-1992)
- MH Mount Hood Railroad (1987-)
- OPR Oregon Pacific Railroad (1997-)
- ← EPTC East Portland Traction Company (-1996)
- ← PRTD Portland Traction
- ← Molalla Western Railway (1993-1996) subsidiary of Hillvista Investment Company ← ?
- ← EPTC East Portland Traction Company (-1996)
- PT Peninsula Terminal
- POTB Port of Tillamook Bay Railroad
- NPT/PTRC Portland Terminal Railroad
- Sumpter Valley Railroad Restoration
- WURR Wallowa Union Railroad Authority (2003-) ← Idaho Northern and Pacific Railroad
- WCTR WCTU Railway
- WPRR Willamette and Pacific Railroad (1993-) owned by Genesee and Wyoming ← Southern Pacific Transportation
- WVR Willamette Valley Railway (1993-) ← Southern Pacific Transportation
- ← WGR Willamina and Grand Ronde Railway (1988-1996) ← Willamette Valley Railroad
- ← Willamette Valley Railroad (-1994)
- ← WGR Willamina and Grand Ronde Railway (1988-1996) ← Willamette Valley Railroad
- Wyoming Colorado Railroad, Oregon Eastern Division (1990-)
- Tourist lines
- Oregon Coast Scenic Railroad (2006-)
- Out of service
- Longview, Portland and Northern Railway
- Oregon, California and Eastern Railway (1915-1990/1991)
- OPE Oregon, Pacific and Eastern Railway (-1994)
- Union Rail Enterprises (1987-1993) ← Union Railroad of Oregon (-1987)
Pennsylvania Public Utility Commission: Railroad Companies Operating in PA, June 2008 Trains
- AOR Aliquippa and Ohio River Railroad (2002-) owned by Summit View ← ALQS Aliquippa and Southern Railroad (1906-2002)
- AVR Allegheny Valley Railroad (1995-) ← Conrail
- BVRY Brandywine Valley Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel
- ← DV Delaware Valley Railway (1994-1999) owned by RailAmerica ← Pennsylvania Department of Transportation, SEPTA
- CSKR C&S Railroad operated by Reading Blue Mountain and Northern Railroad?
- ← Panther Valley Railroad (1983-1991)
- CHR Chestnut Ridge Railroad (2004-) ← Chestnut Ridge Railway (1902-2004)
- Cumberland Mine Railroad
- DL Delaware-Lackawanna Railroad (1993-) owned by Genesee Valley Transportation ← Lackawanna Railway (1991-1993) operated by LVAL Lackawanna Valley Railroad ← Lackawanna County Rail Authority (1985-1991) operated by Lackawanna Valley Railroad ← Conrail
- ← Pocono Northeast Railway (1982-1995)
- EASO EASX Railroad (1993-) subsidiary of EASX, operated by ISS Railroad ← Three Rivers Railway
- EEC East Erie Commercial Railroad
- EV Everett Railroad
- GET Gettysburg and Northern Railroad owned by Pioneer Railcorp (2001-)
- ← Delaware Valley Railway
- ← Gettysburg Railway (-2001) owned by Delaware Transportation Group from 1997
- HRS Hollidaysburg and Roaring Spring Railroad (1995-) operated by Everett Railroad ← Conrail
- JVRR Juniata Valley Railroad (1996-) ← Conrail
- KRL Kasgro Rail Lines
- KJR Kiski Junction Railroad (1995-) subsidiary of Berkman Rail Services until 2005 ← Conrail
- KKRR Knox and Kane Railroad
- LNVT Landisville Terminal and Transfer Company (2001-) ← Landisville Railroad (-2000) owned by AMHR Amherst Industries of Pennsylvania
- LVRB Lehigh Valley Rail Management, Bethlehem Division operates ISG Railways (2003-) ← Keystone Railroad (-2003) (ex-PBNE Philadelphia, Bethlehem and New England Railroad) owned by Bethlehem Steel
- LVRJ Lehigh Valley Rail Management, Johnstown Division operates ISG Railways (2003-) ← Conemaugh and Black Lick Railroad (-2003) owned by Bethlehem Steel
- LS Luzerne and Susquehanna Railway (1994-) operates Luzerne County Rail (1994-) ← F&L Realty, Pocono Northeast Railway
- LVRR Lycoming Valley Railroad (1996-) ← Conrail
- MKC McKeesport Connecting Railroad
- MCLR McLaughlin Line Railroad
- MIDH Middletown and Hummelstown Railroad
- Mount Union Connecting Railroad
- MVC Transportation (2004-) operated by CSX ← P&LE Properties
- NDCR NDC Railroad (now Northampton Switching?)
- NCIR New Castle Industrial Railroad (1992-) (ex-ISSR ISS Rail) ← Penn Power Company
- NHRR New Hope and Ivyland Railroad d/b/a Bucks County Railroad Preservation and Restoration?
- NBER Nittany and Bald Eagle Railroad
- NSHR North Shore Railroad
- OCTL Oil Creek and Titusville Lines
- PSCC Pennsylvania and Southern Railway
- PSWR Pennsylvania Southwestern Railroad (2003-) owned by Watco Companies ← J&L Specialty Steel
- ← MDLR Midland Terminal (1983-2005)
- PBL Philadelphia Belt Line Railroad (1889-1992, 2007-)
- PAM Pittsburgh, Allegheny and McKees Rocks Railroad
- POHC Pittsburgh and Ohio Central Railroad (2001-) owned by Summit View ← PIR Pittsburgh Industrial Railroad (1996-2001) owned by Summit View ← PCY Pittsburgh, Chartiers and Youghiogheny Railway (-1996)
- RBMN Reading Blue Mountain and Northern Railroad (1990-)
- ← BMRG Blue Mountain and Reading Railroad (1983-1995)
- ← EMHR East Mahanoy and Hazleton Railroad (1992-1996) ← Conrail
- RJCN R.J. Corman Railroad/Allentown Lines (1996-) ← ?
- RJCP R.J. Corman Railroad/Pennsylvania Lines (1996-) ← Conrail
- SVRR Shamokin Valley Railroad
- SWP Southwest Pennsylvania Railroad (1995-) ← Conrail
- SH Steelton and Highspire Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel; was subsidiary of LI Acquisition
- SBRR Stourbridge Railroad
- SRC Strasburg Rail Road
- TMSS Towanda-Monroeton Shippers Lifeline (1976-) ← ?
- TCKR Turtle Creek Industrial Railroad
- TYBR Tyburn Railroad
- TYC Tylerdale Connecting?
- URR Union Railroad
- UCIR Union County Industrial Railroad (1994-) operated by North Shore Railroad
- UMP Upper Merion and Plymouth Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel
- WCRL West Chester Railroad (1997-) subsidiary of 4 States Railway Service ← West Chester, Pennsylvania
- WTSE West Shore Railroad
- YRC York Railway (1999-)
- ← MPA Maryland and Pennsylvania Railroad owned by York Railway
- ← YKR Yorkrail owned by York Railway
- Tourist lines
- Gettysburg Scenic Rail Tours (1996-) ← Gettysburg Passenger Service (-1996)
- Tioga Central Railroad
- Out of service
- CI Cambria and Indiana Railroad subsidiary of ISG Railways from 2003, owned by Bethlehem Steel
- Lake Erie, Franklin and Clarion Railroad (1913-1992/1993)
- MCRR Monongahela Connecting Railroad (1885-2002)
- MTR Montour Railroad (1897-2003) owned by Pittsburgh and Lake Erie Properties
- OCTR Octoraro Railway (-1994) subsidiary of Morristown and Eastern Railway?
- STRT Stewartstown Railroad
- Out of service
- Beaufort Railroad (2006-) owned by South Carolina Public Railways Commission ← PRYL Port Royal Railroad (1985-2003) subsidiary of Tangent Transportation owned by South Carolina Public Railways
- CPDR Carolina Piedmont Railroad subsidiary of South Carolina Central Railroad ← GRN Greenville and Northern Railway (-1997)
- ECBR East Cooper and Berkeley Railroad
- GRLW Greenville and Western Railway (2006-) ← CSX
- HB Hampton and Branchville Railroad
- LC Lancaster and Chester Railway
- PDRR Pee Dee River Railway (1988) subsidiary of Aberdeen and Rockfish Railroad from 1989
- PICK Pickens Railway (1996-) originally subsidiary of Pickens Railway Acquisition Company ← Pickens Railroad (-1996) owned by Emergent Group (1977-1996) (ex-National Railway Utilization Corporation until 1991)
- PKHP Pickens Railway, Honea Path Division
- PTR Port Terminal Railroad of South Carolina
- PUCC Port Utilities Commission of Charleston, South Carolina
- SCRF South Carolina Central Railroad
- WCLC/WCLR Waccamaw Coast Line Railroad (1987-) subsidiary of Carolina Southern Railroad from 1995 ← Horry County Railway (-1987)
- Out of service
- EM Edgemoor and Manetta Railway
- Marion County Railway (1984-1985)
- DSRC Dakota Southern Railway
- EE Ellis and Eastern (1989-) owned by Sweetman Construction ← Chicago and North Western Transportation
- SMRR Sisseton Millbank Railroad (1989-) operates SLA Property Management
- SSOR Sisseton Southern Railway?
- South Dakota Railroad Authority operated by others
- SNR Sunflour Railroad (2000-) ← Soo Line Railroad
- Out of service
- DAKS Dakota Short Line (2003-2003) ← Dakota Southern Railway
2006 DOT map, September 2007 Trains
- CFWR Caney Fork and Western Railroad
- ECTB East Chattanooga Belt Railway (2001-) owned by TVRM Tennessee Valley Railroad Museum ← Norfolk Southern Railway
- ETRY East Tennessee Railway
- Franklin Industries (2000?-) ← Cincinnati, New Orleans and Texas Pacific Railway
- HR Heritage Railroad owned by Community Reuse Organization of East Tennessee, operated by (Walden's Ridge Railroad (2003-) ← SFR Southern Freight Railroad (1997-2003/2004) subsidiary of Southern Freight Logistics)
- IRW Railway (2000-) owned by South Central Rail Group ← Gibson County Railroad Authority
- AGLF/KXHR Knoxville and Holston River Railroad (1998-) ← Norfolk Southern Railway
- MUSC Memphis Union Station?
- NERR Nashville and Eastern Railroad
- NWR Nashville and Western Railroad (2000-) ← Central of Tennessee Railway and Navigation Company (1992-2000) ← Cheatham County Rail Authority ← McCormick-Ashland City and Nashville Railroad (1988-1993)
- NCRL NC Railroad (2006-) owned by National Coal ← Norfolk Southern Railway
- SCTR South Central Tennessee Railroad (1978-) subsidiary of SCTRR from 2001; previously owned by RailAmerica
- Tennessee Overhill Heritage Association (2002-) ← CSX
- URY Union Railway of Memphis?
- WHOE Walking Horse and Eastern Railroad
- Tourist lines
- Hiwassee River Rail Adventure
- NACR Nashville and Ashland City Railroad (-1992)
- New River Railway
- Southern Appalachia Railway Museum
- Tennessee Central Railway Museum
- Tennessee Valley Railroad (1970-) subsidiary of Tennessee Valley Railroad Museum
- Three Rivers Rambler
- Out of service
- AGCR Alamo Gulf Coast Railroad (1996-) ← Southern Pacific Transportation
- Alamo North Texas Railroad (2004-) owned by Martin Marietta Materials ← new trackage
- ATR Alliance Terminal Railroad (2004-) owned by OmniTRAX ← BNSF Railway
- ANR Angelina and Neches River Railroad
- AWRR Austin Western Railroad (2007-) owned by Watco Companies ← AUAR Austin Area Terminal Railroad (2000-2007) initially subsidiary of Trans-Global Solutions ← LHRR Longhorn Railway (-2000) subsidiary of Central of Tennessee Railway and Navigation Company
- ← Austin and Northwestern Railroad subsidiary of Austin Railroad
- BLR Blacklands Railroad (1999-) ← ETC East Texas Central Railroad (1996-1998) ← Northeast Texas Rural Rail Transportation District
- BOP Border Pacific Railroad
- Brownsville and Matamoros Bridge
- BRG Brownsville and Rio Grande International Railroad
- CMC CMC Railroad (1997-) ← GWSW GWI Switching Services (1994-1997) owned by Genesee and Wyoming ← ?
- CMC Railroad I switching
- CCIM Corpus Christi Terminal Railroad (1997-) ← Corpus Christi Authority
- CYCY Crystal City Railroad
- DGNO Dallas, Garland and Northeastern Railroad owned by RailTex
- DUTC Dallas Union Terminal?
- Formosa Plastics
- FWDR Fort Worth and Dallas Railroad owned by Tarantula Corporation, operated by Fort Worth and Western Railroad?
- FWDB Fort Worth and Dallas Belt Railroad (1994-) owned by Tarantula Corporation, operated by Fort Worth and Western Railroad ← St. Louis Southwestern Railway
- FWWR Fort Worth and Western Railroad
- GVSR Galveston Railroad (1991-) ← Galveston Railway (1987-1991)
- GRR Georgetown Railroad
- GCSR Gulf, Colorado and San Saba Railway (1993-) ← Atchison, Topeka and Santa Fe Railway
- HRR Hondo Railway (2007-) ← ?
- HBT Houston Belt and Terminal Railway?
- Logistics Support (2006-) ← Gulf Coast Rail Service
- MCSA Moscow, Camden and San Augustine Railroad (1898-) owned by Georgia-Pacific from 2007
- Northeast Texas Rural Rail Transportation District operated by East Texas Central Railroad ← St. Louis Southwestern Railway
- OPT Orange Port Terminal Railway (1995-) subsidiary of Gulf Coast Rail Service until 1996 ← Southern Pacific Transportation
- PNR Panhandle Northern Railroad (1993-) owned by OmniTRAX ← Atchison, Topeka and Santa Fe Railway
- PVS Pecos Valley Southern Railway
- Plainsman Switching
- PTC Plainview Terminal (1995-) owned by RailAmerica ← FAPR Floydada and Plainview Railroad (-1995)
- PCN Point Comfort and Northern Railway
- PTRA Port Terminal Railroad Association
- PYCO Industries (2007-) operated by West Texas and Lubbock Railroad ← South Plains Switching
- Quality Terminal Services (1994-) switching at Alliance Intermodal Facility; owned by MCS Properties
- Rio Valley Railroad (1993-) operated by Rio Valley Switching? ← Missouri Pacific Railroad
- RVSC Rio Valley Switching (1994-) ← Union Pacific Railroad
- RSS Rockdale, Sandow and Southern Railroad
- SRN Sabine River and Northern Railroad
- South Orient Railroad (1994-) (ex-CTE Cen-Tex Rail Link) ← TEXC Texas Central Railroad (-1994)
- SLAL South Plains Lamesa Railroad (1993-) ← ?
- SAW South Plains Switching (1999-) operated by South Plains Lamesa Railroad ← BNSF Railway
- SSC Southern Switching (1994-) operates LSRR Lone Star Railroad ← Burlington Northern Railroad
- Sweetwater Central Switching (1994-) owned by Gulf, Colorado and San Saba Railway ← ?
- TCB Texas Central Business Lines (2001-) ← ?
- TCT Texas City Terminal Railway
- TXGN Texas, Gonzales and Northern Railway (1992-) ← Southern Pacific Transportation
- TN Texas and Northern Railway
- TXNW Texas North Western Railway
- TXOR Texas and Oklahoma Railroad (1991-) operated by Rio Grande Pacific, Texas North Orient (1991-) ← Atchison, Topeka and Santa Fe Railway ← Wichita, Tillman and Jackson Railway subsidiary of Rio Grande Pacific
- TXR Texas Rock Crusher Railway (1998-) owned by TNW Corporation ← BNSF Railway
- TSE Texas South-Eastern Railroad
- Texas Train Management (1993-) ← South Orient Railroad (1992-1993) operated by Rail Operators ← Atchison, Topeka and Santa Fe Railway
- WTL/WTLC/WTLR West Texas and Lubbock Railway (2002-) ← West Texas and Lubbock Railroad (1995-2002) owned by RailAmerica ← SWGR Seagraves, Whiteface and Lubbock Railroad (-1995)
- WRRC Western Rail Road
- Tourist lines
- Austin and Texas Central Railroad
- Grapevine Vintage Railroad (2006-) ← Grapevine, Texas (2000-2006) ← Grapevine Forth Worth Stockyards Steam Excursion Train (-2000)
- Tarantula Steam Train subsidiary of Coe Sun
- Out of service
- CBYN Crosbyton Railroad
- Mineral Wells and Eastern Railway (-1992)
- RSP Roscoe, Snyder and Pacific Railway? (-1986)
- SEI Southeastern International
- TXTC Texas Transportation (1897-2000)
- Union Stock Yards San Antonio (1894-2001)
- WBTS Waco, Beaumont, Trinity and Sabine Railway
- Iron Bull Railroad (2006-)
- KENN Kennecott Company Railroad?
- SLGW Salt Lake, Garfield and Western Railway
- SL Salt Lake City Southern Railroad (1993-) subsidiary of Utah Railway from 1999 ← Union Pacific
- SBG Savage Bingham and Garfield Railroad (2007-) ← Union Pacific Railroad
- UCRY Utah Central Railway (1992-) ← Westinghouse Electric
- Tourist lines
- SLQ St. Lawrence and Atlantic Railroad (Quebec) (1998-) owned by Emons Transportation Group ← ?
- WACR Washington County Railroad (1999-) ← Vermont Railway (1999-1999) ← ← New England Central Railroad (1999-1999) ← Washington County Railroad (1980-1999) operated by New Hampshire and Vermont Railroad ← Montpelier and Barre Railroad
- Out of service
- Northern Vermont Railroad (1996-) operated by Canadian American Railroad ← ?
- BB Buckingham Branch Railroad
- CWRY Commonwealth Railway
- NPB Norfolk and Portsmouth Belt Line Railroad
- SV Shenandoah Valley Railroad (1994-) subsidiary of Greater Shenandoah Valley Development operated by Buckingham Branch Railroad
WSDOT: Regional and Shortline Railroads (outdated), Freight Railroad Contacts, Rail System Map (2007)
- BDTL Ballard Terminal Railroad (1998-) ← Sea Lion Railroad (1997?-1998) ← BNSF Railway
- BIRR Bellingham International Railroad (1998-) owned by Bellingham Cold Storage, operated by BNSF Railway
- CSCD Cascade and Columbia River Railroad (1996-) owned by RailAmerica ← Burlington Northern Railroad
- CWA Central Washington Railroad (2004-) ← BNSF Railway
- ← White Swan Branch Line operated by Toppenish, Simcoe and Western Railroad
- Chelatchie Prairie Railroad (ex?-LINC Lewis and Clark Railway) operated by Portland Vancouver Junction Railroad
- CBRW Columbia Basin Railroad (1996-) ← WCRC Washington Central Railroad (1986-1996)
- CLC Columbia and Cowlitz Railway
- EWG Eastern Washington Gateway Railroad (2007-) owned by U.S. Rail Partners ← Washington State Department of Transportation
- KFR Kettle Falls International Railway (2004-) owned by OmniTRAX ← BNSF Railway
- Longview Switching
- MSN Meeker Southern Railroad subsidiary of Ballard Terminal Railroad
- MVT Mount Vernon Terminal Railway
- Port of Chehalis operated by Puget Sound and Pacific Railroad
- PSAP Puget Sound and Pacific Railroad (2002-) owned by RailAmerica ← ParkSierra ← Arizona and California Railroad
- TRMW Tacoma Rail (ex-TMBL Tacoma Municipal Belt Line Railway)
- ← TE Tacoma Eastern Railway (1995-1998) ← ?
- Tri-City and Olympia Railroad (2000-) (ex-TCRY Tri-City Railroad) operates Port of Benton ← Livingston Rebuild Center)
- WRS Western Rail Switching (2004-) ← Spokane County, Washington
- Weyerhaeuser Woods Railroad
- YRPL Yelm Roy Prairie Line
- Tourist lines
- Battle Ground, Yacolt and Chelatchie Prairie Railroad Association
- Chehalis-Centralia Railroad
- Mt. Rainier Scenic Railroad
- Yakima Electric Railway Museum subsidiary of Yakima Interurban Lines Association
- Yakima Valley Rail and Steam Museum Association
- ← TSWR Toppenish, Simcoe and Western Railroad (1993-2005) subsidiary of Yakima Valley Rail and Steam Museum until 2002 ← Washington Central Railroad
- YVT Yakima Valley Transportation
- Out of service
- Curtis, Milburn and Eastern Railroad (1976-1993)
- Naches Line operated by Yakima Interurban Lines Association
- OLYR Olympic Railroad (1988-?/2006)
- PTRR Port Townsend Railroad?
- Royal Slope Line
- Spirit of Washington Dinner Train
- AO Appalachian and Ohio Railroad (2005-) owned by Watco Companies ← CSX
- BEEM Beech Mountain Railroad
- Big Eagle Rail (2000-) operated by Appalachian Railcar Services until 2003, Short Line Services from 2003 ← Kanawha Rail ← WNFR Winifrede Railroad (-1987)
- DGVR Durbin and Greenbrier Valley Railroad (1998-) ← West Virginia State Rail Authority
- ELKR Elk River Railroad (1991-) ← CSX
- LKRR Little Kanawha River Rail (1989-) owned by Marietta Industrial Enterprises
- RJCV R.J. Corman Railroad/West Virginia Line ← The Railroad (2003-) operated by WVSR WV Southern Railway ← CSX
- SBVR South Branch Valley Railroad subsidiary of West Virginia State Rail Authority
- VRR Vaughan Railroad
- WVC West Virginia Central Railroad
- Out of service
- GRIV Gauley River Railroad
- Kelly's Creek and Northwestern Railroad (-1993)
- WVN West Virginia Northern Railroad (1987-) subsidiary of Kingwood Northern from 1994
WisDOT: Facilities Development Manual, 2008 Wisconsin Railroads
- METW East Troy Railroad Museum (1985-) (ex-East Troy Electric Railroad, subsidiary of Wisconsin Trolley Museum) ← East Troy, Wisconsin
- TR Tomahawk Railway
- WN Wisconsin Northern Railroad subsidiary of Progressive Rail
- Tourist lines
- Out of service
- NBNR Nicolet Badger Northern Railroad (-1994)
- Rat River Transportation
WYDOT: 2007 Transportation Facts
- BDW Bighorn Divide and Wyoming Railroad (2002-) ← Bad Water Railway (2000-2002) ← Bad Water Line (1989-2000)
- WYCO Wyoming Colorado Railroad
- Detroit Transportation (1987-) operates Detroit People Mover
- LI Long Island Rail Road
- MARC Maryland Transit Administration
- Massachusetts Bay Commuter Railroad (2003-) ← Amtrak (1987-2003)
- MNCW Metro-North Commuter Railroad
- Metropolitan Transportation Authority
- AMTK National Railroad Passenger Corporation
- NJTR New Jersey Transit Rail Operations
- North San Diego County Transit Development Board (1992-) operated by San Diego Northern Railway/Amtrak ← Atchison, Topeka and Santa Fe Railway
- Northeast Illinois Regional Commuter Railroad
- NICD Northern Indiana Commuter Transportation District
- Port Authority Trans-Hudson
- SEPA Southeastern Pennsylvania Transportation Authority
- Southern California Regional Rail Authority
- Staten Island Rapid Transit Operating Authority (1971-1987/) ← Staten Island Rapid Transit Railway
- Transit Solutions Group (2006-) ← Regional Transportation Authority
- MI MN NY BCNE/CN/CNA/CNIS/CNQ Canadian National Railway
- ← ARN Alberta RailNet
- ← BCIT/BCOL BC Rail
- ← BLE Bessemer and Lake Erie Railroad
- ← Canadian National Railway, Noyes Division
- ← CEDR Cedar River Railroad
- ← Cedar Valley Railroad (1984-1991)
- ← CCRY Charles City Railway Line (-1994)
- ← CC Chicago Central and Pacific Railroad
- ← DMIR Duluth, Missabe and Iron Range Railway
- ← DWC/DWP Duluth, Winnipeg and Pacific Railway subsidiary of Canadian National Railway
- ← Minnesota and Manitoba Railway (1901-1996)
- ← FVW Fox Valley and Western (1993-)
- ← AHW Ahnapee and Western Railway (1979-1993)
- ← Fox River Valley Railroad (-1993)
- ← GBW Green Bay and Western Railroad (-1993)
- ← GTA/GTQ?/GTW/GTWQ Grand Trunk Western Railroad
- ← IC Illinois Central Railroad (1972-) (ex-ICG Illinois Central Gulf Railroad until 1988)
- ← NAR Northern Alberta Railways
- ← NFLD Newfoundland Railway
- ← Pittsburgh and Conneaut Dock
- ← SSAM Sault Ste. Marie Bridge owned by Wisconsin Central
- ← SAR Savage Alberta Railway
- ← WLO/WRY Waterloo Railway
- ← WC/WCQ Wisconsin Central
- ← WCCL Wisconsin Chicago Link (1999-) owned by Wisconsin Central Transportation ← Wisconsin Central
- NJ NY PA CP/CPAA/CPI/CPRS/CPT Canadian Pacific Railway
- ← CASO Canada Southern Railway
- ← DRI Davenport, Rock Island and North Western Railway (-1995)
- ← DH/DHNY Delaware and Hudson Railway
- ← DA Dominion Atlantic Railway
- ← EN Esquimalt and Nanaimo Railway
- ← QC Quebec Central Railway
- ← STLH St. Lawrence and Hudson Railway
- ← SOO Soo Line Railroad
- ← THB Toronto, Hamilton and Buffalo Railway
- AC/ACIS Algoma Central Railway
- ANY Athabasca Northern Railway
- CBC Chemin de fer Baie des Chaleurs
- BCRY Barrie-Collingwood Railway
- BNML Burlington Northern (Manitoba)
- CGT Canada and Gulf Terminal Railway
- BRCY Cando Contracting
- CBNS Cape Breton and Central Nova Scotia Railway
- CTRW Carlton Trail Railway
- CEMR Central Manitoba Railway
- CWRL Central Western Railway
- DVR Devco Railway
- ECO ECORail
- ENR E&N Railway
- ETL Essex Terminal Railway
- FLR Fife Lake Railway
- GROI Genesee Rail-One
- GEXR Goderich-Exeter Railway
- GFC Grand Falls Central Railway
- GFR Grand Forks Railway
- GRNR Grand River Railway now CP
- GWRS/GWSR Great Western Railway
- HBRY Hudson Bay Railway
- HCRY Huron Central Railway
- IRRS International Rail Road Systems
- Jersey Southern Railway
- KPR Kelowna Pacific Railway
- CFL Chemin de fer Lanaudière
- LEN Lake Erie and Northern Railway now CP
- RLGN RailLink Mackenzie Northern
- CFMG Chemin de fer de la Matapédia et du Golfe
- MOTC Montreal Tramways
- NBEC New Brunswick East Coast Railway
- NBSR New Brunswick Southern Railway
- OKAN Okanagan Valley Railway
- OLO Ontario L'Orignal Railway
- ONT/ONTA Ontario Northland Railway
- OS Ontario Southland Railway
- OCRR Ottawa Central Railway
- RLK RailLink Ottawa Valley
- ← TOR Trans-Ontario Railway
- QRC Quebec Railway
- QCR Quebec Central Railway
- QGRY Quebec Gatineau Railway
- RLHH RailLink Southern Ontario
- RCRR Red Coat Road and Rail
- RS Roberval and Saguenay Railway
- SMNR Southern Manitoba Railway
- SORA Southern Rails Cooperative
- BCH/SRY Southern Railway of British Columbia
- SVI Southern Railway of Vancouver Island
- SCR Sydney Coal Railway
- TRR Thunder Rail
- GOT Toronto Area Transit Operating Authority
- TRRY Trillium Railway
- TSH Tshiuetin Rail Transportation
- Vancouver and Lulu Island Railway now CP
- VIA VIA Rail Canada (1978-) in the U.S. until 2004
- WHRC Windsor and Hantsport Railway
- BJRR Baja California Railroad?
- LFCD Línea Coahuila Durango
- FCCM Ferrocarriles Chiapas-Mayab
- CHP Ferrocarril Chihuahua al Pacífico
- KCSM Kansas City Southern de Mexico ← FNE/TFM TFM
- FXE Ferrocarril Mexicano
- FCM/FCP/FPN/FST/FUS/NDM/TVM Ferrocarriles Nacionales de México
- FSRR Ferrosur (ex-Ferrocarril del Sureste)
- TFVM Terminal Ferroviaria del Valle de México
Unknown
edit- ASR Allegheny Southern Railroad (?)
- CNOR Cincinnati Northern (?)
- FBDC Ford County Historical Railroad Preservation Foundation (?)
- OCR Oklahoma Central Railroad (?)
- SKPR Southern Kent and Pacific Railroad (?)
- SOPR South Pierce Railroad (?)
- SPCH Quest Communications (?)
- SSH South Shore (?)
Non-carriers
edit- AIG AIG Commercial Equipment Finance?
- AK WA Alaska Rail Marine
- ACBL American Commercial Barge Lines
- ART American Refrigerator Transit
- AAR Association of American Railroads
- Boat Company (1982-1983/1985)
- CFWY Consolidated Freightways
- CMSN Crowley Marine Services
- CSX Sea-Land Terminals (-1993)
- DGBY Digby Truck Lines
- DLC Drummond Lighterage
- FGMR Fruit Growers Express
- FLT Foss Launch and Tug
- ITB Island Tug and Barge
- KNC Kingcome Navigation
- MOT Marine Oil Transportation
- Michigan-Wisconsin Transportation/Michconsin (-1995)
- NAVE Navajo Express
- PNS Philadelphia and Norfolk Steamship
- PLE Pittsburgh and Lake Erie Properties (1965-2003) (ex-Pittsburgh and Lake Erie Railroad)
- PSFL Puget Sound Freight Lines
- RAIL Railinc
- R.J. Corman Railroad Property (2002-) (ex-R.J. Corman Equipment Company) operated by R.J. Corman Railroad/Bardstown Line and others ← CSX
- RYAN Ryan Industries
- SSPB Seaspan International
- SNBL Sioux City and New Orleans Barge Line
- TMT Trailer Marine Transportation
- WATR Water Carriers
- WIF West India Fruit and Steamship
- WTCO Western Transportation
- WYEC Wye Transportation?