Reservoir Hill, also known as Whitelock, is a neighborhood in the city of Baltimore, Maryland, United States. It is located south of Druid Hill Park, north of Bolton Hill, east of Penn-North, and west of Jones Falls. It is bounded by Druid Park Lake Drive, the Jones Falls Expressway, North Avenue (U.S. Route 1), and McCulloh Street. It is contained in the 21217 ZIP code.