2026 Property Tax Due Dates
April 30
First half
October 31
Second half
Payment Methods
Online, Mail, In-Person
Union County Treasurer
Phone
(605) 356-2391How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Union County Treasurer
In Person
Visit the Treasurer's office — 209 E Main St. Suite #220, Elk Point SD 57025
Other Counties in South Dakota
About Union County
Union County is the southernmost county in the U.S. state of South Dakota. As of the 2020 census, the population was 16,811, making it the 13th most populous county in South Dakota. Its county seat has been Elk Point since April 30, 1865.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you a fortnight before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.