Lincoln -- U.S. County in South Dakota Population (2000): 24131 Housing Units (2000): 9131 Land area (2000): 578.087748 sq. miles (1497.240329 sq. km) Water area (2000): 0.502888 sq. miles (1.302473 sq. km) Total area (2000): 578.590636 sq. miles (1498.542802 sq. km) Located within: South Dakota (SD), FIPS 46 Location: 43.319792 N, 96.722261 W Headwords: Lincoln Lincoln, SD Lincoln County Lincoln County, SD