Maplewood, MO -- U.S. city in Missouri Population (2000): 9228 Housing Units (2000): 5266 Land area (2000): 1.547339 sq. miles (4.007590 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.547339 sq. miles (4.007590 sq. km) FIPS code: 45830 Located within: Missouri (MO), FIPS 29 Location: 38.612535 N, 90.321339 W ZIP Codes (1990): 63143 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Maplewood, MO Maplewood