What is the sales tax in zip code 80544? - The sales tax in zip code 80544 in Niwot, Colorado is 6.185% as of 2025. Use the 80544 sales tax rate calculator to calculate the sales tax for any purchase in 80544.
80544 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 | Niwot | 80544 | 2.9% | 0% | 1.185% | 6.185% |