Westphalia, MO -- U.S. city in Missouri Population (2000): 320 Housing Units (2000): 152 Land area (2000): 0.506414 sq. miles (1.311606 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.506414 sq. miles (1.311606 sq. km) FIPS code: 78910 Located within: Missouri (MO), FIPS 29 Location: 38.440207 N, 91.997887 W ZIP Codes (1990): 65085 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Westphalia, MO Westphalia