What is the sales tax in zip code 77642? - The sales tax in zip code 77642 in Port Arthur, Texas is 8.25% as of 2025. Use the 77642 sales tax rate calculator to calculate the sales tax for any purchase in 77642.
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Below is a list of the state sales tax, city sales tax, and county tax rate for .
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Jefferson | Texas | Port Arthur | 77642 | 6.25% | 1.5% | 0.5% | 8.25% |