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 22 South Dakota Highway 22 South Dakota Highway 22 (SD 22) is a state highway in the east-central part of the U.S. state of South Dakota. It connects Hazel, Castlewood, and Clear Lake, within the northern part of Hamlin County and the central part of Deuel County. SD 22 originally extended from the Wyoming state line, following what is now U.S. Route 212 (US 212). When the U.S. highway was established, SD 22 was truncated to travel from SD 45 in northern Hand County to SD 41 (current US 281) south of Redfield. This is now SD 26. The current alignment