10 Counties with the Highest Property Tax Rates in Washington

If you are comparing property taxes across Washington, these 10 counties have the highest effective rates in the state. The highest-rate county, Pierce County, comes in at 0.94% — 0.10% higher than the Washington average (0.84%). The statewide effective rate is 0.84%.

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#CountyEffective RateMedian TaxMedian Home Value
1Pierce County0.94%$4,555$484,400
2Walla Walla County0.90%$3,386$375,600
3Thurston County0.90%$4,043$451,500
4Grays Harbor County0.87%$2,441$279,500
5Columbia County0.86%$2,215$256,100
6Spokane County0.86%$3,196$370,500
7Adams County0.84%$2,104$251,300
8King County0.84%$6,785$811,200
9Clark County0.84%$4,080$487,900
10Skagit County0.82%$4,008$486,200

How this ranking is calculated

The effective property tax rate is the median annual property tax paid divided by the median home value in each county, expressed as a percentage. It is the most practical way to compare property tax burden between counties because it neutralizes differences in home values.

Counties with the highest rates in Washington often share a few characteristics: lower home values and/or higher millage rates driven by school and local service funding needs.

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