Perry -- U.S. County in Illinois Population (2000): 23094 Housing Units (2000): 9457 Land area (2000): 440.961050 sq. miles (1142.083828 sq. km) Water area (2000): 5.850928 sq. miles (15.153833 sq. km) Total area (2000): 446.811978 sq. miles (1157.237661 sq. km) Located within: Illinois (IL), FIPS 17 Location: 38.054426 N, 89.349016 W Headwords: Perry Perry, IL Perry County Perry County, IL