Classification: County
Located in: Iowa (IA)
Total Population (2000): 20670
Total Housing Units (2000): 8543
Land Area (square meters): 1472959757
Water Area (square meters): 5324980
Land Area (square miles): 568.712966
Water Area (square miles): 2.055986
Latitude (decimal degrees): 41.329998
Longitude (decimal degrees): -91.706689
FIPS Code: 19
Place FIPS Code: 183