Classification: County
Located in: Iowa (IA)
Total Population (2000): 18187
Total Housing Units (2000): 7570
Land Area (square meters): 1500955175
Water Area (square meters): 6312027
Land Area (square miles): 579.522058
Water Area (square miles): 2.437087
Latitude (decimal degrees): 41.770019
Longitude (decimal degrees): -91.118036
FIPS Code: 19
Place FIPS Code: 31