Jackson -- U.S. County in Missouri Population (2000): 654880 Housing Units (2000): 288231 Land area (2000): 604.844189 sq. miles (1566.539191 sq. km) Water area (2000): 11.566961 sq. miles (29.958289 sq. km) Total area (2000): 616.411150 sq. miles (1596.497480 sq. km) Located within: Missouri (MO), FIPS 29 Location: 39.024005 N, 94.463242 W Headwords: Jackson Jackson, MO Jackson County Jackson County, MO