2026 Property Tax Due Dates
Installment 1
December 20
First half or full payment
Installment 2
May 10
Second half
Penalty: Interest charged monthlyGrace period: None
Payment Methods
Online, Mail, In-Person
Jefferson County Treasurer
Phone
(785) 403-0000 2How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Jefferson County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Kansas
About Jefferson County
Jefferson County is a county located in the U.S. state of Kansas. Its county seat and most populous city is Oskaloosa. As of the 2020 census, the county population was 18,368.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 2 weeks 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.