Monticello, MO -- U.S. village in Missouri Population (2000): 126 Housing Units (2000): 58 Land area (2000): 0.261697 sq. miles (0.677791 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.261697 sq. miles (0.677791 sq. km) FIPS code: 49592 Located within: Missouri (MO), FIPS 29 Location: 40.117841 N, 91.714152 W ZIP Codes (1990): 63457 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Monticello, MO Monticello