Classification: County
Located in: South Dakota (SD)
Total Population (2000): 18741
Total Housing Units (2000): 8093
Land Area (square meters): 1127785664
Water Area (square meters): 3465512
Land Area (square miles): 435.440498
Water Area (square miles): 1.338042
Latitude (decimal degrees): 43.690828
Longitude (decimal degrees): -98.076614
FIPS Code: 46
Place FIPS Code: 35