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Grays Harbor County Treasurer

All 2021 property taxes were due October 31 - If you have not paid, interest has accrued.  Please contact our office for the new amount due.

COVID-19 Protocol - Please consider using our specially marked secure dropbox outside the Administration Building in Montesano (do not put cash in dropbox)
The Treasurer's office is opened to the public.  Masks are required and social distancing must be maintained.  For the safety of all people, we encourage customers to AVOID CASH TRANSACTIONS. Cashier's checks can be obtained at local banks or money orders from the post office. 

GO GREEN: Sign up for email statements at


Payment information

Online payments can be made by clicking "Make a Payment" above.
Or taxpayers can pay by phone by following the instructions below.

  Please note: A convenience fee is charged with each online or phone payment.
  Per RCW 36.29.190, the County cannot absorb the cost of electronic payments.
  The convenience fees are assessed and collected by the 3rd party vendor that
  handles the payments.
  Gray Harbor County DOES NOT receive any of these transaction fees.

To pay by phone using Official Payments
Phone 800-272-9829 and select Option 3: Property Tax
Jurisdiction Code: 5609
R = Real Property (parcel number has 12 digits) Press 1
P= Personal (parcel number starts with a letter) Press 2
Follow the instructions and be sure to make note of your payment confirmation number


Office is located on the second floor of the County Administration Building
at the corner of Broadway and Main
100 W. Broadway, Suite 22, Montesano, Washington. 

Office Hours
Monday - Friday
9:00 am - 12 noon
Closed 12-12:30
12:30 pm - 4:30 pm

Contact information:
By Mail at PO Box 831 - Montesano, WA  98563
By Phone at 360-249-3751
By Email at 

The county treasurer holds a key position of public trust in the financial affairs of local government. The treasurer is not only the custodian of all county funds but also acts as the "bank" for other units of local government including school, fire, water and local improvement districts.

Primary responsibilities include:

  • Collecting property taxes (including foreclosure and distraint actions against delinquent accounts), special assessments, excise taxes, gambling taxes and other miscellaneous receipts

  • Receipting and accounting for all funds and deposits of revenue for the state, county and junior taxing districts

  • Managing the cash flow of the county, and investing money not needed for immediate expenditure for the benefit of the county and junior taxing districts

  • Administering short and long term debt financing

  • Coordinating the provisions of banking services for the county and junior taxing districts