Morgan -- U.S. County in Illinois Population (2000): 36616 Housing Units (2000): 15291 Land area (2000): 568.757345 sq. miles (1473.074698 sq. km) Water area (2000): 3.507297 sq. miles (9.083856 sq. km) Total area (2000): 572.264642 sq. miles (1482.158554 sq. km) Located within: Illinois (IL), FIPS 17 Location: 39.712954 N, 90.215325 W Headwords: Morgan Morgan, IL Morgan County Morgan County, IL