Blackwater, MO -- U.S. city in Missouri Population (2000): 199 Housing Units (2000): 96 Land area (2000): 0.325643 sq. miles (0.843411 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.325643 sq. miles (0.843411 sq. km) FIPS code: 06148 Located within: Missouri (MO), FIPS 29 Location: 38.979403 N, 92.990871 W ZIP Codes (1990): 65322 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Blackwater, MO Blackwater