Classification: County
Located in: Illinois (IL)
Total Population (2000): 11253
Total Housing Units (2000): 4876
Land Area (square meters): 896179057
Water Area (square meters): 2537976
Land Area (square miles): 346.016683
Water Area (square miles): 0.979918
Latitude (decimal degrees): 39.272064
Longitude (decimal degrees): -88.263215
FIPS Code: 17
Place FIPS Code: 35