Island County Property Taxes
Island County, Washington
Effective Tax Rate
0.00%
24.3% above state avgMedian Annual Tax
$0
$314/mo escrow
Estimate Your Tax
Annual Tax
$0
Monthly
$0
Eff. Rate
0.70%
At a Glance
Median Home Value
$535,300
State avg ▲ $397,674
Tax w/ Mortgage/yr
$3,708
$309/mo escrow
Tax w/o Mortgage/yr
$3,873
$323/mo
State Tax Rate Rank
#9
of 39 counties (1 = lowest)
Similar tax rates
Data Story
About Property Taxes in Island County, Washington
Island County taxes middle-rate with high values
Island County's effective tax rate of 0.703% slightly exceeds the national median of 0.67%, placing it in the 48th percentile nationally. Despite a moderate rate, its median property tax of $3,765 ranks highest among the eight counties, driven by a notably elevated median home value of $535,300.
Middle-range rates, premium home values
Island County ranks 13th among Washington's 39 counties with an effective rate of 0.703%, below the state average of 0.761%. However, its median tax of $3,765 is $737 above the state median, reflecting the region's most valuable homes at $535,300.
Lower rate but highest absolute tax bill
Island County's 0.703% effective rate is below Grant (0.823%) and Grays Harbor (0.873%), yet its median tax of $3,765 is the highest in the region. This paradox reflects Island County's substantially higher median home values ($535,300), making it an expensive county despite moderate effective rates.
Highest absolute tax: $3,765 annually
A homeowner with Island County's median-valued property of $535,300 pays approximately $3,765 in annual property taxes. The bill varies little whether paying with mortgage deductions ($3,708) or outright ($3,873), reflecting Island County's affluent real estate market.
High-value properties warrant assessment review
Island County homeowners with valuable properties should carefully verify their assessments, as even small percentage errors on expensive homes translate to large annual tax differences. A formal appeal is particularly worthwhile for high-value properties where errors may cost hundreds annually.
How Island County Compares
Median Annual Property Tax
Island County
0.70%
Effective rate
Washington Avg
0.76%
Effective rate
National Avg
0.91%
Effective rate
Frequently Asked Questions
What is the property tax rate in Island County, Washington?
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How does Island County compare to the Washington average?
What is the median home value in Island County, Washington?
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How does Island County rank for property taxes in Washington?
Counties with Similar Tax Rates
Nearby Counties
Other Counties in Washington
Data updated: March 2026
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.