Belton, MO -- U.S. city in Missouri Population (2000): 21730 Housing Units (2000): 8411 Land area (2000): 13.395537 sq. miles (34.694279 sq. km) Water area (2000): 0.042869 sq. miles (0.111029 sq. km) Total area (2000): 13.438406 sq. miles (34.805308 sq. km) FIPS code: 04384 Located within: Missouri (MO), FIPS 29 Location: 38.818232 N, 94.529838 W ZIP Codes (1990): 64012 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Belton, MO Belton