Classification: County
Located in: Illinois (IL)
Total Population (2000): 14287
Total Housing Units (2000): 5743
Land Area (square meters): 869190483
Water Area (square meters): 22979514
Land Area (square miles): 335.596336
Water Area (square miles): 8.87244
Latitude (decimal degrees): 39.635412
Longitude (decimal degrees): -88.62634
FIPS Code: 17
Place FIPS Code: 139