South Dakota spending, because of the proximity of many tourist attractions in the Black Hills and Ellsworth Air Force Base. The next eight largest cities in the state, in order of descending 2010 population, are Aberdeen (26,091), Brookings (22,056), Watertown (21,482), Mitchell (15,254), Yankton (14,454), Pierre (13,646), Huron (12,592), and Vermillion (10,571). Pierre is the state capital, and Brookings and Vermillion are the locations of the state's two largest universities (South Dakota State University and University of South Dakota, respectively). With a population of about 14,000, Pierre is the second smallest state capital in the United States. Of the ten largest cities
South Dakota Highway 71 Highway 471. After that, it leaves the forest and ends at US 18 Byp. in Hot Springs. The road was originally commissioned in 1936 as part of South Dakota Highway 87. Part of that highway was given the SD 71 designation in 1962. South Dakota Highway 71 South Dakota Highway 71 (SD 71) is a state highway in the southwestern part of the U.S. state of South Dakota. It travels from the Nebraska state line, where it continues as N-2/N-71, through the Black Hills National Forest, to U.S. Route 18 Bypass (US 18 Byp.) in Hot Springs. The road was