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 23,310 (2020 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 15,411).

Our Cities and Towns

Announcements

Yankton County Treasurer
Friday, March 1, 2024

Reminder:
Yankton County residents that have last names starting with F, G and J have until March 31, 2024 to renew vehicle registration.

Yankton County Auditor
Tuesday, February 6, 2024

Now is the perfect time to double check your voter information for the upcoming elections. You can check your voter information on the Secretary of State's Website or you can stop by our office to make any changes.

Also the Absentee Request Form is available at this time you can complete with our office.

Yankton County Highway
Wednesday, November 15, 2023

The Yankton County Highway Department will begin their winter hours on Monday, November 20, 2023 and will run until further notice.

Winter hours are Monday through Friday 6:45am-3:00pm.

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, & Sundays

Yankton County YouTube Channel

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