Marietta, TX -- U.S. town in Texas Population (2000): 112 Housing Units (2000): 75 Land area (2000): 0.577269 sq. miles (1.495120 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.577269 sq. miles (1.495120 sq. km) FIPS code: 46668 Located within: Texas (TX), FIPS 48 Location: 33.172655 N, 94.541998 W ZIP Codes (1990): 75566 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Marietta, TX Marietta