Hardin, MO -- U.S. city in Missouri Population (2000): 614 Housing Units (2000): 267 Land area (2000): 0.618940 sq. miles (1.603047 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.618940 sq. miles (1.603047 sq. km) FIPS code: 30322 Located within: Missouri (MO), FIPS 29 Location: 39.269616 N, 93.833245 W ZIP Codes (1990): 64035 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hardin, MO Hardin