Yankton County Auditor
Wednesday, September 16, 2026
Absentee voting for the upcoming November 3rd, 2026 General Election will begin on Friday, September 18th 2026 in the Commissioners Chamber Room. Make sure to being a photo ID when you stop by. There will also be sample ballots and reading materials for the amendments available in our office as well
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.
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.