We at the Benton County Treasurer's Office make great efforts to assist you, the taxpayer, with the highest of care and efficiency. Please let us know what your thoughts are about the job that we do and if there are any ways we can assist you further. Below you can leave an anonymous comment as to what you think of our service and how to make our office better. We will continue to provide outstanding service for you with the feedback we receive.

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Prosser Office

620 Market St

PO Box 630

Prosser, WA 99350

Kennewick Office

5600 W Canal Dr Ste A

Kennewick, WA 99336

Phone: 509-786-2255 or 509-735-8505


Hours: 8:30am - 4:30pm Monday - Friday

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