Marietta, IL -- U.S. village in Illinois Population (2000): 150 Housing Units (2000): 59 Land area (2000): 0.269280 sq. miles (0.697433 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.269280 sq. miles (0.697433 sq. km) FIPS code: 46825 Located within: Illinois (IL), FIPS 17 Location: 40.501508 N, 90.393168 W ZIP Codes (1990): 61459 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Marietta, IL Marietta