South Dakota South Dakota South Dakota () is a U.S. state in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux Native American tribes, who compose a large portion of the population and historically dominated the territory. South Dakota is the seventeenth largest by area, but the fifth smallest by population and the 5th least densely populated of the 50 United States. As the southern part of the former Dakota Territory, South Dakota became a state on November 2, 1889, simultaneously with North Dakota. Pierre is the state capital and Sioux Falls, with a population
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