Classification: County
Located in: Illinois (IL)
Total Population (2000): 60653
Total Housing Units (2000): 25025
Land Area (square meters): 1773546391
Water Area (square meters): 31707117
Land Area (square miles): 684.770119
Water Area (square miles): 12.242187
Latitude (decimal degrees): 41.77826
Longitude (decimal degrees): -89.867831
FIPS Code: 17
Place FIPS Code: 195