Geography of South Dakota of the federal or state government, such as Badlands National Park, Wind Cave National Park, and Custer State Park, are located in the state. In 2011, the population of South Dakota was estimated to be 824,082, and the state ranks fifth-lowest in both total population as well as population density in the United States. Sioux Falls, with a population of just over 170,000, is the largest city in the state. Rapid City ranks as South Dakota's second-largest city, and Pierre is the state capital. Historically a very agricultural state, the service and tourism sectors have grown in economic importance in
South Dakota State University in agriculture, engineering, nursing, and pharmacy, as well as liberal arts. The Carnegie Foundation for the Advancement of Teaching classifies South Dakota State University as a Research University with high research activity. The graduate program is classified as Doctoral, Science, Technology, Engineering, Math dominant. The university was founded in the Dakota Territory on February 21, 1881, as Dakota Agriculture College. The first building, with funding from the territorial legislature, was built in 1883, six years before the State of South Dakota was formed. Numerous expansions were funded in the late 19th century and early 20th century. The name was changed