Annapolis, MO -- U.S. city in Missouri Population (2000): 310 Housing Units (2000): 161 Land area (2000): 0.380145 sq. miles (0.984571 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.380145 sq. miles (0.984571 sq. km) FIPS code: 01270 Located within: Missouri (MO), FIPS 29 Location: 37.359993 N, 90.697123 W ZIP Codes (1990): 63620 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Annapolis, MO Annapolis