Marietta, MS -- U.S. town in Mississippi Population (2000): 248 Housing Units (2000): 111 Land area (2000): 1.780831 sq. miles (4.612331 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.780831 sq. miles (4.612331 sq. km) FIPS code: 45120 Located within: Mississippi (MS), FIPS 28 Location: 34.500990 N, 88.471146 W ZIP Codes (1990): 38856 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Marietta, MS Marietta