Property tax appeals in Island County, Washington

We don't cover Island County, Washington yet. We haven't researched its appeal deadlines, filing rules or evidence requirements, so this page lists none of them and our free assessment check doesn't run here.

Source: U.S. Census Bureau, American Community Survey 2020–2024Last checked January 29, 2026

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Median home value: $593,300
Median property tax paid per year: $3,999
Our coverage: Waitlist open

Not affiliated with Island County or any government agency. We have not verified this county's deadlines or rules.

How we verify facts

What do we know about Island County so far?

Published figures and state rules first, then the county topics. A county fact appears only after a person checks it against the official source; until then its topic shows as in research.

Census figuresMedian home value $593,300 · Median property tax paid per year $3,999Published data
Who hears appeals in WashingtonWashington State Board of Tax AppealsPublished data
Washington: When are property tax appeal deadlines in Washington?Verified
Washington: Who decides property tax appeals in Washington?Verified
Washington: How is a property tax appeal filed in Washington?Verified
Washington: What evidence do Washington review bodies accept?Verified
Who hears an Island County appealIn research
The filing deadlineIn research
Forms and how to fileIn research
What evidence countsIn research

How we verify facts

What do Island County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

What do homeowners in Island County pay in property tax?

The median owner-occupied home in Island County was worth $593,300, and the median property tax its owners paid was $3,999 a year, according to the Census Bureau's American Community Survey.

Median home value: $593,300; Margin of error ±$14,896.
Median property tax paid per year: $3,999; Margin of error ±$106.
Median tax as a share of median value: 0.67%; A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes: 26,888; Margin of error ±638.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

Median home value: Island County compared

Island County$593,300
Typical Washington county$408,900
Typical US county$185,300

Island County $593,300; Typical Washington county $408,900; Typical US county $185,300

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 39 in Washington and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: Island County compared

Island County$3,999
Typical Washington county$3,050
Typical US county$1,619

Island County $3,999 a year; Typical Washington county $3,050 a year; Typical US county $1,619 a year

Property tax guides for Island County homeowners

Property Tax Appeal Deadlines by State: The RulesWashington · Island County
Homestead Exemption: What It Is and How to Get ItWashington · Island County
How to Lower Your Property Taxes: What to Check FirstWashington · Island County

Counties next to Island County

Snohomish County property tax appealsWaitlist open
Jefferson County property tax appealsWaitlist open
Skagit County property tax appealsWaitlist open
Kitsap County property tax appealsWaitlist open
San Juan County property tax appealsWaitlist open

Washington property tax appeals: all counties

Where do these facts come from?

Data credits: Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with Island County or any government agency. Not legal advice. Not an appraisal.