Twin Oaks, MO -- U.S. village in Missouri Population (2000): 362 Housing Units (2000): 167 Land area (2000): 0.257866 sq. miles (0.667869 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.257866 sq. miles (0.667869 sq. km) FIPS code: 74284 Located within: Missouri (MO), FIPS 29 Location: 38.566536 N, 90.500608 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Twin Oaks, MO Twin Oaks