King County, WA Property Tax Rate
Homeowners in King County pay an effective 0.84% of home value in property tax — about $6,814 a year on the median $811,200 home, above the Washington county median of 0.79%.
King County, WA: 0.84% effective property tax — ~$6,814/yr on the median home.
- Effective rate0.84%
- Median home value$811,200
- Median annual bill$6,814
- WA county median0.79%
- U.S. county median0.84%
Source: U.S. Census ACS 2023 5-year (median taxes paid ÷ median value), compiled June 2026.
King County vs. Washington and the U.S.
| Effective rate | On the county's $811,200 median home | |
|---|---|---|
| King County | 0.84% | $6,814 |
| Washington county median | 0.79% | $6,408 |
| U.S. county median | 0.84% | $6,814 |
Median household income here is $122,148, putting the median tax bill at about 5.6% of income. Effective rates fold in homestead exemptions and assessment practice — they're what owners actually pay, which is why they beat statutory rates for comparison.
Highest & lowest rates in Washington
| County | Effective rate | Median bill |
|---|---|---|
| Pierce County | 0.94% | $4,553 |
| Walla Walla County | 0.90% | $3,380 |
| Thurston County | 0.90% | $4,064 |
| Grays Harbor County | 0.87% | $2,432 |
| San Juan County | 0.57% | $4,141 |
| Wahkiakum County | 0.60% | $2,067 |
| Lincoln County | 0.60% | $1,634 |
| Garfield County | 0.61% | $1,307 |
Full picture: Washington property tax calculator · interactive county atlas · all county pages.
Frequently asked questions
What is the property tax rate in King County, WA?
The effective rate is about 0.84% of home value — the median homeowner pays roughly $6,814 a year on a $811,200 median home (ACS 2023 five-year data).
Is King County's property tax high?
It's above the Washington county median (0.79%) and below the U.S. county median (0.84%).
How is the effective rate calculated?
Median real-estate taxes paid ÷ median home value, from the Census American Community Survey — what owners actually pay, after exemptions, rather than the statutory millage.
Sources & methodology
Sources: Census ACS 2023 5-year tables B25103/B25077.
Effective rate = median real-estate taxes ÷ median home value (owner-occupied). Individual bills vary with exemptions, assessment timing and local levies — verify with the county assessor.