98240 Property Tax Rate

Property owners in ZIP code 98240 (Custer, Washington) pay a median of $3,410/year in property taxes on homes valued at $566,400. This translates to an effective tax rate of 0.60%, which is 21% below the Washington state average of 0.77%.

The monthly property tax burden for a median-valued home in 98240 is approximately $284, which factors into escrow payments on mortgages. This ZIP code is located within Whatcom County.

Compared to similar ZIP codes in Washington, 98240 has higher property taxes. ZIP codes with similar effective rates include 98922 (0.60%) and 98297 (0.60%).

In Custer, property taxes represent approximately 3.2% of the median household income of $106,256, providing context for the relative tax burden on homeowners in this area.

Washington property reassesses at market value upon sale with no state cap; Whatcom County Assessor will establish your assessed value at purchase price with unrestricted annual growth. Whatcom County offers the Senior/Disabled Property Tax Exemption for homeowners 61+ or disabled with qualifying income (state limit approximately $40,000–$45,000) — this significantly reduces your tax burden if eligible. Contact the Whatcom County Assessor immediately after purchase to apply for senior or disability exemptions; the annual filing deadline is March 31.