Classification: County
Located in: Illinois (IL)
Total Population (2000): 6445
Total Housing Units (2000): 3071
Land Area (square meters): 838450715
Water Area (square meters): 12120660
Land Area (square miles): 323.727645
Water Area (square miles): 4.679813
Latitude (decimal degrees): 37.782056
Longitude (decimal degrees): -88.233803
FIPS Code: 17
Place FIPS Code: 59