Classification: County
Located in: Illinois (IL)
Total Population (2000): 4413
Total Housing Units (2000): 2351
Land Area (square meters): 960531785
Water Area (square meters): 9776097
Land Area (square miles): 370.863411
Water Area (square miles): 3.774572
Latitude (decimal degrees): 37.4114
Longitude (decimal degrees): -88.573261
FIPS Code: 17
Place FIPS Code: 151