2026 Property Tax Due Dates
April 30
First half
October 31
Second half
Payment Methods
Online, Mail, In-Person
Whitman County Treasurer
Treasurer
Chris Nelson
Phone
(509) 397-6230Mailing Address
P.O. Box 550, Colfax, WA 99111
Office Hours
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Whitman County Treasurer — P.O. Box 550, Colfax, WA 99111
In Person
Visit the Treasurer's office — 400 North Main Street, Colfax WA 99111, Mon-Fri 8am - 5pm
Other Counties in Washington
About Whitman County
Whitman County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 47,973. The county seat is Colfax, and its largest city is Pullman.
Source: Wikipedia — content available under CC BY-SA 4.0
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.