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
Monday, February 3, 2025

Attention: Beginning Tuesday, February 18th the SD Division of Motor Vehicles will be implementing a new system. As a result of the conversion, our office will NOT be able to process any motor vehicle transactions on Friday, February 14th. We regret the inconvenience

Yankton County
Sunday, February 2, 2025

The Yankton County Government Center and all other Yankton County non-emergency offices in the county will be closed on Monday, February 17, 2025 in observance of Presidents Day.

Yankton County Treasurer
Saturday, February 1, 2025

Reminder:
Yankton County residents that have last names starting with C, D and E have until February 28, 2025 to renew vehicle registration.

Yankton County Highway Department
Wednesday, November 27, 2024

The Yankton County Highway Department will begin their winter hours on Monday, December 02, 2024 and will run until further notice.

Winter hours are:
Monday through Thursday: 6:30am to 4:00pm.
Fridays: 6:30am to 10:30am

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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