Classification: County
Located in: South Dakota (SD)
Total Population (2000): 21652
Total Housing Units (2000): 8840
Land Area (square meters): 1350810463
Water Area (square meters): 28659307
Land Area (square miles): 521.550858
Water Area (square miles): 11.065421
Latitude (decimal degrees): 42.960419
Longitude (decimal degrees): -97.385342
FIPS Code: 46
Place FIPS Code: 135