99128 Property Tax Rate

Property owners in ZIP code 99128 (Farmington, Washington) pay a median of $1,324/year in property taxes on homes valued at $300,000. This translates to an effective tax rate of 0.44%, which is 42% below the Washington state average of 0.77%.

The monthly property tax burden for a median-valued home in 99128 is approximately $110, which factors into escrow payments on mortgages. This ZIP code is located within Whitman County. This is $2,268 less than the Washington average of $3,592/year.

Compared to similar ZIP codes in Washington, 99128 has lower property taxes. ZIP codes with similar effective rates include 98941 (0.45%) and 98647 (0.46%).

In Farmington, property taxes represent approximately 2.3% of the median household income of $58,194, 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 remains stable until substantial improvements occur or the county initiates a revaluation. Whitman County offers a Senior/Disabled Exemption Program and Property Tax Reduction Program for income-qualified residents — contact the Whitman County Assessor to apply for these programs by the deadline and potentially reduce your tax burden. Request your property's current assessed value from the Whitman County Assessor within 30 days of purchase and confirm all relief program eligibility before deadlines pass.