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 State also battles their in-state rival, the University of South Dakota. South Dakota State has not lost to their in-state rival since 2000; however, despite the one-sided nature of the rivalry, it has been dubbed the South Dakota Showdown Series. The Dykhouse Student Athlete Center, the home of Jackrabbit football, opened prior to the 2010 football season. The Sanford Jackrabbit Athlete Complex, a state-of-the-art indoor practice and competition facility opened October 11, 2014. It is immediately north of and attached to the Dykhouse Student Athlete Center. The SJAC has bleacher seating for up to 1,000 spectators and can be used