99350 Property Tax Rate

Property owners in ZIP code 99350 (Prosser, Washington) pay a median of $2,441/year in property taxes on homes valued at $289,100. This translates to an effective tax rate of 0.84%, which is 10% above the Washington state average of 0.77%.

The monthly property tax burden for a median-valued home in 99350 is approximately $203, which factors into escrow payments on mortgages. This ZIP code is located within Benton County. This is $1,151 less than the Washington average of $3,592/year.

Compared to similar ZIP codes in Washington, 99350 has higher property taxes. ZIP codes with similar effective rates include 98908 (0.84%) and 99344 (0.84%).

In Prosser, property taxes represent approximately 3.3% of the median household income of $74,393, providing context for the relative tax burden on homeowners in this area.

Washington has no state income tax and does not reassess property at sale — your assessed value is locked in until you make major improvements or the county conducts a revaluation. Benton County offers a Senior/Disabled Exemption Program and Property Tax Reduction Program for income-qualified households — file applications with the Benton County Assessor before the annual deadline to lower your tax bill. Request your property's assessment information from the Benton County Assessor within 30 days of purchase and confirm your eligibility for exemption programs available in the county.