The Benton County Treasurer's Office has opened the drop boxes at the Prosser Courthouse, and the Benton County Administration building in Kennewick for property tax payments. The drop boxes are designed for property tax payments made by check. (NO CASH payments)
The drop box locations are:
Benton County Kennewick Office:
7122 W Okanogan PL #E110, Kennewick, WA 99336
Benton County Prosser Courthouse:
620 Market St, Prosser, WA 99350
