Mercer Island Property Tax Rate
King County, Washington
Mercer Island is located in King County, Washington. Homeowners in Mercer Island pay a median of $10,001 per year in property taxes on a home valued at $1,884,200, resulting in an effective tax rate of 0.53%. This is 36% lower than the King County average of 0.83%.
0.53%
vs 0.83% county avg
$10,001
Per year
$1,884,200
2024 estimate
25,282
Mercer Island, WA
How Mercer Island Compares
Cities in King County
Compare property tax rates for 17 cities in King County, Washington.
| City | Annual Tax | Rate |
|---|---|---|
| Auburn | $5,194 | 1.02% |
| Des Moines | $5,467 | 1.01% |
| SeaTac | $4,720 | 0.98% |
| Kent | $5,102 | 0.95% |
| Burien | $5,723 | 0.94% |
| Shoreline | $6,795 | 0.89% |
| Renton | $5,538 | 0.88% |
| Federal Way | $4,408 | 0.88% |
| Maple Valley | $5,887 | 0.88% |
| Sammamish | $10,001 | 0.81% |
| Bothell | $6,817 | 0.78% |
| Issaquah | $7,266 | 0.78% |
| Seattle | $7,025 | 0.77% |
| Bellevue | $9,018 | 0.75% |
| Redmond | $8,132 | 0.74% |
| Kirkland | $7,315 | 0.72% |
| Mercer Island | $10,001 | 0.53% |
About Property Taxes in Mercer Island
Property taxes in Mercer Island are collected by King County. Tax exemptions available to King County residents — including homestead, senior, and disability exemptions — also apply to homeowners in Mercer Island. For detailed information on available exemptions and the county tax collector, see the King County property tax page.
Property Tax Calculator
Estimate your annual property tax in Mercer Island
Estimated Annual Property Tax
$1,590
$133/month · Rate: 0.53%
King County Property Taxes
County-level data, exemptions, historical trends, and tax collector info.
View county details →Washington Property Taxes
Statewide rates, all 39 counties, and exemptions.
View state details →Think your property tax is too high?
Homeowners save an average of $1,148/year by appealing their assessment.
Learn How to Appeal →Frequently Asked Questions
Data Source: U.S. Census Bureau, 2024 American Community Survey 5-Year Estimates. City-level tax data is derived from Census place-level statistics. Effective tax rates are calculated by dividing median real estate taxes paid by median home value. Actual property tax rates may vary based on local taxing jurisdictions, exemptions, and assessment practices. This information is for general reference only and should not be used as a substitute for professional tax advice.