Smithton, MO -- U.S. city in Missouri Population (2000): 510 Housing Units (2000): 212 Land area (2000): 0.291189 sq. miles (0.754176 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.291189 sq. miles (0.754176 sq. km) FIPS code: 68384 Located within: Missouri (MO), FIPS 29 Location: 38.680652 N, 93.092456 W ZIP Codes (1990): 65350 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Smithton, MO Smithton