Lawrence -- U.S. County in South Dakota Population (2000): 21802 Housing Units (2000): 10427 Land area (2000): 800.035515 sq. miles (2072.082384 sq. km) Water area (2000): 0.278918 sq. miles (0.722394 sq. km) Total area (2000): 800.314433 sq. miles (2072.804778 sq. km) Located within: South Dakota (SD), FIPS 46 Location: 44.399250 N, 103.800052 W Headwords: Lawrence Lawrence, SD Lawrence County Lawrence County, SD