Sanborn -- U.S. County in South Dakota Population (2000): 2675 Housing Units (2000): 1220 Land area (2000): 569.012338 sq. miles (1473.735128 sq. km) Water area (2000): 1.199795 sq. miles (3.107455 sq. km) Total area (2000): 570.212133 sq. miles (1476.842583 sq. km) Located within: South Dakota (SD), FIPS 46 Location: 44.023459 N, 98.119738 W Headwords: Sanborn Sanborn, SD Sanborn County Sanborn County, SD