South Dakota pairs wide-open prairie with the Black Hills, dramatic badlands, living Native nations, and some of the country’s most recognizable landmarks. This guide covers the history, geography, and distinctly Listoric details that make the state memorable.
Quick Facts
Capital: Pierre
Largest city: Sioux Falls
Statehood: November 2, 1889 (40th state)
Nickname: Mount Rushmore State
15 Essential Facts About South Dakota
1. South Dakota entered the Union in 1889.
South Dakota became the 40th state on November 2, 1889, the same day North Dakota joined the Union. The two states were created from the Dakota Territory under the federal Enabling Act.
2. Pierre is the capital, while Sioux Falls is the largest city.
Pierre sits along the Missouri River in the state’s center. Sioux Falls, in the southeast, is the state’s largest city and a major regional hub.
3. Mount Rushmore features four presidential portraits.
Carved into the Black Hills, Mount Rushmore depicts George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln. The memorial is administered by the National Park Service.
4. The Black Hills hold deep cultural and historical importance.
The Paha Sapa, or Black Hills, are sacred to many Lakota people and are central to the region’s Indigenous history. They are also home to forests, caves, and major tourism sites.
5. Badlands National Park preserves a striking fossil landscape.
Layered rock formations, mixed-grass prairie, and abundant fossils define Badlands National Park. Its terrain looks unlike much of the surrounding Great Plains.
6. Custer State Park is famous for its free-roaming bison herd.
Custer State Park in the Black Hills is known for wildlife viewing, scenic drives, and a large managed bison herd. The annual buffalo roundup is one of South Dakota’s signature events.
7. Wind Cave was one of America’s earliest national parks.
Wind Cave National Park was established in 1903. Its cave is especially known for boxwork, a rare honeycomb-like calcite formation.
8. The Missouri River crosses the state from north to south.
The Missouri is a defining South Dakota waterway, shaping reservoirs, recreation, and the geography of the state’s central corridor.
9. Nine reservations are located in South Dakota.
South Dakota is home to nine tribal reservations, and Lakota, Dakota, and Nakota cultures remain integral to the state’s past and present.
10. Sturgis hosts one of the world’s best-known motorcycle rallies.
The Sturgis Motorcycle Rally began in 1938 and brings riders and visitors to the Black Hills each summer. It is a major part of the state’s event calendar.
11. Mitchell’s Corn Palace is a one-of-a-kind roadside landmark.
The Corn Palace is redecorated with murals made from corn and other grains. The elaborate exterior makes it a classic Great Plains stop.
12. The Homestake Mine helped shape the Black Hills economy.
The historic Homestake Mine at Lead was once one of the country’s leading gold mines. Its underground facilities later supported major scientific research.
13. Agriculture remains central to the state.
South Dakota’s prairies support cattle ranching and crop farming, especially corn, soybeans, wheat, and hay. Agriculture continues to shape its communities and landscape.
14. The state sits squarely in the Great Plains.
Weather can shift quickly across South Dakota’s open terrain, from hot summers to cold, snowy winters. The plains environment is part of the state’s character.
15. The Mammoth Site reveals an Ice Age story.
Hot Springs is home to the Mammoth Site, an active paleontological site where the remains of dozens of mammoths have been found in an ancient sinkhole.
Sources and Further Reading
- South Dakota state government
- South Dakota State Historical Society
- National Park Service: Mount Rushmore
- National Park Service: Badlands
- U.S. Census Bureau QuickFacts