What is the sales tax in Niwot city? - The sales tax in Niwot city of Colorado is 6.185% as of 2025. Use the Niwot sales tax calculator to calculate the sales tax for any purchase in Niwot.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Niwot.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Boulder | Colorado | Niwot | 80544 | 2.9% | 0% | 1.185% | 6.185% |