Real and personal property taxes due October 31

Submitted by the San Juan County Treasurer

San Juan County Treasurer, Rhonda Pederson, would like to remind county property owners that the second half of property taxes and personal property taxes are due Tuesday, Oct. 31.

Payments received in person, via our secure payment box or postmarked after the October 31 deadline are automatically charged one percent interest on outstanding balances. Please plan ahead to avoid interest charges. Our secure payment drop box is located at the Court House entrance on the Sheriff’s side of the building. If mailing your payment, the envelope must be federally postmarked on or before October 31 for the payment to be considered on time. Keep in mind, that although the payment is placed in the mailbox, federal postmarks often happen the next business day. If mailing in a payment less than a week prior to the deadline, we strongly recommend having your envelope hand-canceled by the postal agent.

Mailed payments may be addressed to:

San Juan County Treasurer

PO Box 639

Friday Harbor, WA 98250

Running short on time or don’t have checks? Take advantage of our convenient online payment options by visiting our website at Payments may also be made using our automated phone attendant by calling 877-816-9299. These are contracted services and processing fees apply:

Credit Card processing fee 2.5%

Debit Card processing fee $3.95

eCheck processing fee $2.00

Taxpayers enrolled in our autopay program should expect the second half payment for the amount listed on your second half tax payment coupon to debit your account on October 25, 2023.

Unsure what your property tax balance is or if you’ve already paid? Use San Juan County property search feature by going to the parcel search page. You can view amounts due for 2023 and prior years, if applicable.

You may also contact our office with questions or concerns by phone, 360-378-2171 or email at

About the San Juan County Treasurer’s Office

The San Juan County Treasurer’s Office acts as the bank for the county, school districts, fire districts, special purpose districts, and other units of local government. The treasurer is also charged with the collection of various taxes that benefit a wide range of governmental functions. The department’s main office is located at 350 Court Street, Friday Harbor, WA 98250. For more information about San Juan County’s Treasurer’s Office, visit