Site Navigation Iowa Minnesota Montana Nebraska North Dakota South Dakota Wyoming     South Dakota @ AARoads - Gateway Sitemap to all pages covering the state of South Dakota. Unless otherwise noted, all photographs taken by Alex Nitzman and Andy Field. Population Statistics State Population 754,844 Top County Populations Minnehaha 149,000 Pennington 88,756 Brown 35,377 Brookings 28,263 Lincoln 24,549 Codington 25,910 Top City Populations Sioux Falls 123,975 Rapid City 59,607 Aberdeen 24,658 Watertown 20,237 Brookings 18,504 Mitchell 14,558 Pierre 13,876 Yankton 13,528 Huron 11,893 Source: 2000 U.S. Census Data Other Statistics Capital: Pierre Nickname: Mount Rushmore State Area: 77,116 square miles or 199,730 square kilometers, 16th largest Statehood: 40th state; admitted November 2, 1889 Total Interstate Mileage: 678.31 miles Highest Point: Harney Peak (7,242 feet above sea level) Mining: gold Agriculture: cattle, milk, corn, pigs/hogs, soybeans, wheat Highway Guides Interstate 29 Interstate 229 Interstate 90 Business Loop Interstate 90 Interstate 190 U.S. 14 Alternate U.S. 14 U.S. 16 Alternate U.S. 16 U.S. 85 U.S. 385 South Dakota 10 South Dakota 34 South Dakota 42, Business Spur I-29, Business Loop I-229 South Dakota 87 Miscellaneous Highway Photos Page Updated March 26, 2008.