Jackson -- U.S. County in Mississippi Population (2000): 131420 Housing Units (2000): 51678 Land area (2000): 726.901025 sq. miles (1882.664931 sq. km) Water area (2000): 316.399677 sq. miles (819.471367 sq. km) Total area (2000): 1043.300702 sq. miles (2702.136298 sq. km) Located within: Mississippi (MS), FIPS 28 Location: 30.455709 N, 88.633143 W Headwords: Jackson Jackson, MS Jackson County Jackson County, MS