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 168 South Dakota Highway 168 South Dakota Highway 168 (SD 168) is a state highway in Butte County in the U.S. state of South Dakota. It runs from U.S. Route 85 (US 85) to SD 79. The highway is maintained by the South Dakota Department of Transportation (SDDOT), and is not part of the National Highway System. SD 168 begins at an intersection with US 85 in Butte County and treks southeast through rolling plains. The route continues in this direction for approximately before meeting its eastern terminus at an intersection with SD 79 north of Castle Rock. SD 168 is