Cowlitz County 
Treasurers Office
207 4th Ave. N
Kelso, WA 98626
(360) 577-3060

The Cowlitz County Treasurer's Office now offers the ability for customers to charge real and personal taxes

You need to have a Cowlitz County Parcel Number and correct amount to pay to charge the taxes on, then just call the toll free 1-800-272-9829 using jurisdiction code 5608. You will be given a confirmation number that you should keep. Official Payments Corp. assesses a fee to the customer for this service.

Or you may charge over the Internet web site www.officialpayments.com.

Your payments to the Cowlitz County Treasurer Office will be posted as soon as the County receives confirmation of the charge through Official Payment Corp.