Classification: County
Located in: Illinois (IL)
Total Population (2000): 17151
Total Housing Units (2000): 7950
Land Area (square meters): 1848986002
Water Area (square meters): 4304987
Land Area (square miles): 713.897517
Water Area (square miles): 1.662165
Latitude (decimal degrees): 38.419189
Longitude (decimal degrees): -88.401393
FIPS Code: 17
Place FIPS Code: 191