Stanley -- U.S. County in South Dakota Population (2000): 2772 Housing Units (2000): 1277 Land area (2000): 1443.280558 sq. miles (3738.079326 sq. km) Water area (2000): 73.711347 sq. miles (190.911503 sq. km) Total area (2000): 1516.991905 sq. miles (3928.990829 sq. km) Located within: South Dakota (SD), FIPS 46 Location: 44.378639 N, 100.582033 W Headwords: Stanley Stanley, SD Stanley County Stanley County, SD