Island County, WA property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Island County is 0.70%, below the Washington median of 0.84% and below the national median of 0.98%. The median homeowner pays $3,765 a year on a home worth $535,300.
- Effective rate
- 0.70%
- Median annual bill
- $3,765
- Median home value
- $535,300
- Rank in Washington
- 31of 39
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $1,400 | $117 |
| $300,000 | $2,100 | $175 |
| $400,000 | $2,800 | $233 |
| $500,000 | $3,500 | $292 |
| $750,000 | $5,250 | $438 |
| $1,000,000 | $7,000 | $583 |
Island County compared with Washington and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Island County | 0.70% | $3,765 | $535,300 |
| Washington median | 0.84% | $4,361 | $519,800 |
| United States median | 0.98% | $2,969 | n/a |
Rates and medians: U.S. Census Bureau, ACS 2023 5-year estimates, tables B25103 and B25077. Effective rate is median taxes paid divided by median owner-occupied home value.
Frequently asked questions
What is the property tax rate in Island County, WA?
The median effective property tax rate in Island County is 0.70% of home value, below the Washington median of 0.84% and below the national median of 0.98%. The median homeowner pays $3,765 a year on a median home value of $535,300 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Island County?
About $2,800 per year at the county's median effective rate of 0.70%, before exemptions. The exact bill depends on the city, school district and special districts that serve the parcel, so treat this as a planning estimate.
How does Island County compare with the rest of Washington?
Island County ranks 31 of 39 Washington counties by effective rate. The Washington median is 0.84% and the median bill is $4,361.