Towns & Cities

The Place We Call Home

Yankton County, established in 1862, is located along the southern border of South Dakota along the Missouri River. The county encompasses a total area of 533 square miles with a population of 22,684 (2014 US Census estimate).

The primary industries in the county are agriculture, manufacturing, and services.

The county seat is located in the largest city in the county - Yankton (population 14,552).

Our Cities and Towns

Announcements

Yankton County Treasurer's Office
Thursday, June 1, 2023

Reminder: Yankton County residents that have last names starting with K and L have until June 30, 2023 to renew vehicle registration.
Yankton County Emergency Management
Thursday, April 27, 2023

To learn more information on the burn ban, flooding/weather and other important county information from us, please click here
Yankton County Highway Department
Friday, April 14, 2023

The Yankton County Highway Department will begin their summer hours on Monday, April 17, 2023 and will run until further notice.

Summer hours are Monday through Thursday 6:30am-5:00pm.

Main Phone:
605.260.4400

Address:
321 West 3rd Street, Suite 100 Yankton, SD 57078

Office Hours:
9:00am - 5:00pm CST, Monday-Friday
Closed on Holidays, Saturdays, & Sunday

Yankton County © 2023. Developed by Intuvio Solutions.