Aurora -- U.S. County in South Dakota Population (2000): 3058 Housing Units (2000): 1298 Land area (2000): 708.178630 sq. miles (1834.174153 sq. km) Water area (2000): 4.350324 sq. miles (11.267286 sq. km) Total area (2000): 712.528954 sq. miles (1845.441439 sq. km) Located within: South Dakota (SD), FIPS 46 Location: 43.705151 N, 98.542675 W Headwords: Aurora Aurora, SD Aurora County Aurora County, SD