Classification: County
Located in: Iowa (IA)
Total Population (2000): 20296
Total Housing Units (2000): 8949
Land Area (square meters): 1647464010
Water Area (square meters): 35378745
Land Area (square miles): 636.089437
Water Area (square miles): 13.65981
Latitude (decimal degrees): 42.153859
Longitude (decimal degrees): -90.556325
FIPS Code: 19
Place FIPS Code: 97