Jackson -- U.S. County in Ohio Population (2000): 32641 Housing Units (2000): 13909 Land area (2000): 420.279213 sq. miles (1088.518118 sq. km) Water area (2000): 1.220185 sq. miles (3.160265 sq. km) Total area (2000): 421.499398 sq. miles (1091.678383 sq. km) Located within: Ohio (OH), FIPS 39 Location: 39.019990 N, 82.606659 W Headwords: Jackson Jackson, OH Jackson County Jackson County, OH