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 65 the final segment stretching from US 16 in Kadoka to the Nebraska border south of Martin. Construction of a new road led to the connection of the two northern segments by 1932. The segment south of US 16 was re-designated as an extension of South Dakota Highway 63 in 1929. The route of SD 65 is defined in South Dakota Codified Laws § 31-4-174. South Dakota Highway 65 South Dakota Highway 65 (SD 65) is a state route in north-central region of the U.S. state of South Dakota. It begins at U.S. Highway 212 east of Dupree, then runs northerly