South Dakota Counties

Tripp County sits in south-central South Dakota. The county seat, Winner, lives up to its name. It’s the biggest town around for miles.

The Great Plains stretch into Turner County. Small communities like Marion and Viborg reflect the area’s Norwegian and German heritage.

Union County is South Dakota’s southeastern-most county, wedged between Iowa and Nebraska. The Big Sioux River forms its eastern border.

Walworth County sits in north-central South Dakota on the Missouri River. Selby serves as the county seat, but Mobridge is the biggest town.

Yankton County sits on South Dakota’s southern border, right up against Nebraska. The Missouri River runs along its southern edge.

Wide open spaces define this rugged slice of South Dakota. Ziebach County sprawls across the north-central part of the state.