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 63 South Dakota Highway 63 South Dakota Highway 63 (SD 63) is a state highway in the central portions of the U.S. state of South Dakota. It connects U.S. Route 18 (US 18) south-southeast of Parmelee with the North Dakota state line north of McLaughlin. It consists of two disconnected segments. The southern segment begins at US 18 south-southeast of Parmelee and proceeds to a rural intersection just south of Norris. The much-longer northern segment, which is long, begins at an intersection with SD 44 just south of Corn Creek and ends at the North Dakota state line north of McLaughlin,