Classification: County
Located in: Illinois (IL)
Total Population (2000): 14761
Total Housing Units (2000): 6332
Land Area (square meters): 1406599772
Water Area (square meters): 8424874
Land Area (square miles): 543.091231
Water Area (square miles): 3.252862
Latitude (decimal degrees): 39.36954
Longitude (decimal degrees): -90.383013
FIPS Code: 17
Place FIPS Code: 61