Monroe City, MO -- U.S. city in Missouri Population (2000): 2588 Housing Units (2000): 1182 Land area (2000): 3.091526 sq. miles (8.007016 sq. km) Water area (2000): 0.040952 sq. miles (0.106064 sq. km) Total area (2000): 3.132478 sq. miles (8.113080 sq. km) FIPS code: 49394 Located within: Missouri (MO), FIPS 29 Location: 39.653570 N, 91.732152 W ZIP Codes (1990): 63456 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Monroe City, MO Monroe City