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 Highway 471 north and enters the city of Edgemont as 3rd Street before turning into 2nd Avenue. The designation continues west onto A Street, passing through Edgemont before briefly turning north on 6th Avenue to terminate at US 18. South Dakota Highway 471 South Dakota Highway 471 (SD 471) is a state highway in the southwestern part of the U.S. state of South Dakota. It travels from SD 71 southeast of Rumford to U.S. Route 18 (US 18) in Edgemont. SD 471 was designated in 1976. It was previously a portion of SD 52, which had been used on this route from