What is the sales tax in Black Diamond city? - The sales tax in Black Diamond city of Washington is 8.9% as of 2025. Use the Black Diamond sales tax calculator to calculate the sales tax for any purchase in Black Diamond.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Black Diamond.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| King | Washington | Black Diamond | 98010 | 6.5% | 2.4% | 0% | 8.9% |