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 Register of Deeds
Monday, April 14, 2025

The only third-party company South Dakota authorizes to order vital records (birth certificates, death certificates, marriage certificates) is at VitalChek with an option to order online using a credit card.
Fees for S.D. vital records are $15.00 per copy (ordered from the County Register of Deeds office) and $26.50 (ordered through Vital Chek) or $44.00 (ordered through Vital Chek with overnight shipping).

Yankton County Treasurer
Tuesday, April 1, 2025

A reminder to all residents that the first half of property taxes is due by April 30th. There are several convenient ways to pay. You can pay in person, by mail, by our secure drop box or you can pay on-line. For more information please see the Treasurer's page under the Departments tab or call our office.
Yankton County Highway Department
Tuesday, April 1, 2025

The Yankton County Highway Department will begin their summer hours on Monday, April 07, 2025 and will run until further notice.

Summer hours are Monday through Thursday 6:30am to 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, & Sundays

Yankton County YouTube Channel

Yankton County © 2025. Developed by Intuvio Solutions.