What is the sales tax in Boulder county? - The sales tax in Boulder county of Colorado is 9.045% as of 2025. Use the Boulder sales tax calculator to calculate the sales tax for any purchase in Boulder.
Boulder Sales Tax Calculator |
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| Amount: | $ |
| Sales Tax: | % |
| Before Tax Price | $25.00 |
|---|---|
| Sales Tax | $2.26 |
| Final Price | $27.26 |
Sales Tax By Zip Code | |
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Below is a list of the sales tax rate for each county in Boulder.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Boulder | Colorado | Allenspark | 80510 | 2.9% | 0% | 1.185% | 5.185% |
| Boulder | Colorado | Boulder | 80301 | 2.9% | 3.87% | 1.185% | 9.055% |
| Boulder | Colorado | Eldorado Springs | 80025 | 2.9% | 0% | 1.185% | 5.185% |
| Boulder | Colorado | Jamestown | 80455 | 2.9% | 2% | 1.185% | 7.185% |
| Boulder | Colorado | Lafayette | 80026 | 2.9% | 3.87% | 1.185% | 9.055% |
| Boulder | Colorado | Longmont | 80501 | 2.9% | 3.53% | 1.185% | 8.715% |
| Boulder | Colorado | Louisville | 80027 | 2.9% | 3.87% | 1.185% | 9.055% |
| Boulder | Colorado | Lyons | 80540 | 2.9% | 4% | 1.185% | 9.185% |
| Boulder | Colorado | Nederland | 80466 | 2.9% | 4.25% | 1.185% | 9.435% |
| Boulder | Colorado | Niwot | 80544 | 2.9% | 0% | 1.185% | 6.185% |
| Boulder | Colorado | Pinecliffe | 80471 | 2.9% | 0% | 1.185% | 5.185% |
| Boulder | Colorado | Ward | 80481 | 2.9% | 2% | 1.185% | 7.185% |