Smithland, IA -- U.S. city in Iowa Population (2000): 221 Housing Units (2000): 114 Land area (2000): 0.360550 sq. miles (0.933821 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.360550 sq. miles (0.933821 sq. km) FIPS code: 73650 Located within: Iowa (IA), FIPS 19 Location: 42.229078 N, 95.931875 W ZIP Codes (1990): 51056 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Smithland, IA Smithland