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
Geography of South Dakota South Dakota's economy is tourism. Many travel to visit the national parks, state parks, and national monuments in the state, particularly those of the Black Hills region. South Dakota's location between national parks in the west and large cities to the east also contributes to the state's tourism and hospitality industry. In 2006, tourism provided an estimated 33,000 jobs in the state and contributed over two billion US$ to the economy of South Dakota. South Dakota has a total of 83,609 miles (134,556 km) of highways, roads, and streets, along with 679 miles (1,093 km) of interstate highways. Two major