What is the sales tax in zip code 78504? - The sales tax in zip code 78504 in Mcallen, Texas is 8.25% as of 2025. Use the 78504 sales tax rate calculator to calculate the sales tax for any purchase in 78504.
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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 |
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| Hidalgo | Texas | Mcallen | 78504 | 6.25% | 2% | 0% | 8.25% |