What is the sales tax in Port Costa city? - The sales tax in Port Costa city of California is 8.75% as of 2025. Use the Port Costa sales tax calculator to calculate the sales tax for any purchase in Port Costa.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Port Costa.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Contra Costa | California | Port Costa | 94569 | 6% | 0% | 0.25% | 8.75% |