Homeowners in Black Diamond, Washington paid a median $5,753 a year in property tax on a median home worth $779,100, an effective rate of about 0.74% (Census 2020–2024).
0.83%King County overall
Black Diamond vs county, state and US
Effective rate
Median tax paid per year
Tax on a home in Black Diamond
At the local 0.74% effective rate
| Home value | Estimated yearly tax | Per month |
|---|---|---|
| $150,000 | $1,108 | $92 |
| $250,000 | $1,846 | $154 |
| $350,000 | $2,584 | $215 |
| $500,000 | $3,692 | $308 |
Buying a home in King County? 2026 loan limits
Nearby and related
- King County property taxcounty overview
- Washington property tax by countyranked
- Seattle, WA0.78% effective
- Bellevue, WA0.70% effective
- Kent, WA0.93% effective
- Renton, WA0.89% effective
- Federal Way, WA0.85% effective
- Cost of living in Washingtonprices & rents
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25103 (median real estate taxes paid), B25077 (median home value), B25003, B25088, B19013 and B01003. These are 2020–2024 medians reported by owner-occupants, not 2026 tax bills or official mill rates. The effective rate here is median tax ÷ median home value. Actual bills depend on assessed value, exemptions (homestead, senior, veteran) and local levies. Check with your county assessor or treasurer. Not tax advice.
Frequently asked questions
What is the property tax rate in Black Diamond, Washington?
Homeowners in Black Diamond, Washington paid a median $5,753 a year in property tax on a median home worth $779,100, an effective rate of about 0.74% (Census 2020–2024).
How much is property tax on a $250,000 home in Black Diamond?
About $1,846 a year at the 0.74% median effective rate. Exemptions such as homestead can lower it.
Is property tax in Black Diamond higher than the rest of Washington?
Black Diamond ranks #132 lowest of 397 Washington places we track. The statewide effective rate is 0.81%. King County overall is 0.83%.