West Alton, MO -- U.S. city in Missouri Population (2000): 573 Housing Units (2000): 291 Land area (2000): 28.362168 sq. miles (73.457676 sq. km) Water area (2000): 8.564390 sq. miles (22.181667 sq. km) Total area (2000): 36.926558 sq. miles (95.639343 sq. km) FIPS code: 78514 Located within: Missouri (MO), FIPS 29 Location: 38.867798 N, 90.225856 W ZIP Codes (1990): 63386 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: West Alton, MO West Alton