Classification: County
Located in: Illinois (IL)
Total Population (2000): 9590
Total Housing Units (2000): 4591
Land Area (square meters): 612225870
Water Area (square meters): 41845883
Land Area (square miles): 236.38174
Water Area (square miles): 16.156786
Latitude (decimal degrees): 37.146816
Longitude (decimal degrees): -89.28948
FIPS Code: 17
Place FIPS Code: 3