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 Highway Department

Wednesday, September 2, 2026

Yankton County is in the process of updating our Five-Year Highway and Bridge Improvement Plan. A public meeting will be held to discuss and answer questions about the proposed updated plan. The meeting will be held on Thursday, September 17, 2026, at 6:00 p.m. at the Government Center in the Commissioner Meeting Room. Click here to read notice

Yankton County Treasurer

Tuesday, September 1, 2026

Reminder: Yankton County residents that have last name starting with S, have until September 30, 2026 to renew vehicle registration.

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