Liberty, MS -- U.S. town in Mississippi Population (2000): 633 Housing Units (2000): 309 Land area (2000): 2.058135 sq. miles (5.330546 sq. km) Water area (2000): 0.009985 sq. miles (0.025861 sq. km) Total area (2000): 2.068120 sq. miles (5.356407 sq. km) FIPS code: 40640 Located within: Mississippi (MS), FIPS 28 Location: 31.160812 N, 90.804002 W ZIP Codes (1990): 39645 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Liberty, MS Liberty