Fulton -- U.S. County in Illinois Population (2000): 38250 Housing Units (2000): 16240 Land area (2000): 865.623998 sq. miles (2241.955768 sq. km) Water area (2000): 16.970212 sq. miles (43.952645 sq. km) Total area (2000): 882.594210 sq. miles (2285.908413 sq. km) Located within: Illinois (IL), FIPS 17 Location: 40.499297 N, 90.177649 W Headwords: Fulton Fulton, IL Fulton County Fulton County, IL