Sitemap to all pages covering the state of South Dakota. Photo contributions by Alex Nitzman, Andy Field and Brent Ivy.
Highway Guides
Interstates
Interstate 29
Interstate 229
Interstate 90
Interstate 190
Business Spur I-29 – Elk Point
Business Loop I-90 – Rapid City
Business Loop I-229
U.S. Highways
U.S. 14
U.S. 14 Alternate
U.S. 16
U.S. 16 Alternate
U.S. 85
U.S. 385
State HighwaysPopulation Statistics
| State Population | |||||
|---|---|---|---|---|---|
| 886,667 | |||||
| Metropolitan Populations | |||||
| Sioux Falls | 276,730 | Sioux City, IA-NE-SD | 149,940 | Rapid City | 139,074 |
| Top County Populations | |||||
| Minnehaha | 197,214 | Pennington | 109,222 | Lincoln | 65,161 |
| Brown | 38,301 | Brookings | 34,375 | Meade | 29,852 |
| Top City Populations | |||||
| Sioux Falls | 187,809 | Rapid City | 78,864 | Aberdeen | 28,180 |
| Brookings | 24,804 | Watertown | 22,303 | Mitchell | 15,697 |
| Yankton | 14,651 | Pierre | 13,708 | Huron | 13,420 |
| Sources: 2020 U.S. Census Data (metro populations and counties), 2020 U.S. Census Estimate (cities) | |||||
About South Dakota
- 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
Updated December 30, 2021.