Departments

Yankton County Sheriff's Office

The Sheriff's Office is located on the first floor of the Yankton County Courthouse and Safety Center building at 410 Walnut Street. Use the entrance on the south side of the building.

Phone:

(605) 668-3567

Fax:

(605) 260-2780

Address:

410 Walnut Street
Yankton, SD 57078

You can visit the Yankton County Sheriff's website for more information.

Preston Crissey

Yankton County Sheriff

Announcements

Yankton County Auditor

Thursday, October 1, 2026

Absentee voting has started again as we have just received the new ballots. Make sure to bring your Photo ID and we will be able to help you in the Commission Chambers. Sample ballots are also available at our office or in the Commission Chambers as well

Yankton County Weed Department

Friday, September 18, 2026

The Yankton County Weed Department would like to remind Yankton County landowners that fall is a good time to take care of leafy spurge .

To learn more information, please click here

Yankton County Register of Deeds

Monday, September 14, 2026

As of September 14, 2026, the state has implemented a new vital records system. Please expect a delay in all services as we learn and navigate this new software.

September 14th – October 16th you will need to make an appointment to apply for a marriage license. Plan for this to take at least 30 minutes.

Notary services will not be available from September 14th – October 2nd.

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