What is the sales tax in zip code 80303? - The sales tax in zip code 80303 in Boulder, Colorado is 9.045% as of 2025. Use the 80303 sales tax rate calculator to calculate the sales tax for any purchase in 80303.
80303 Sales Tax Rate Calculator |
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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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| Boulder | Colorado | Boulder | 80303 | 2.9% | 3.86% | 1.185% | 9.045% |