Colorado Sales Tax Rates: Boulder County
Boulder County, Colorado Sales Tax Rate 2025 Up to 9.435%
A county-wide sales tax rate of 1.185% is applicable to localities in Boulder County, in addition to the 2.9% Colorado sales tax.
Some cities and local governments in Boulder County collect additional local sales taxes, which can be as high as 5.35%.Here's how Boulder County's maximum sales tax rate of 9.435% compares to other counties around the United States:
- Higher maximum sales tax than 78% of Colorado counties
- Higher maximum sales tax than 82% of counties nationwide
Tax Rates By City in Boulder County, Colorado
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Colorado has a 2.9% sales tax and Boulder County collects an additional 1.185%, so the minimum sales tax rate in Boulder County is 4.085% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Boulder County, including all local taxes.
City | Sales Tax Rate | Tax Jurisdiction |
---|---|---|
Longmont | 8.715% | Longmont |
Boulder | 9.045% | Boulder |
Louisville | 9.055% | Lafayette |
Longmont | 9.185% | Lyons |
Lafayette | 9.055% | Lafayette |
Boulder | 9.055% | Lafayette |
Lyons | 9.185% | Lyons |
Nederland | 9.435% | Nederland |
Niwot | 6.185% | Boulder Oldtn Niwot Ld Sp |
Jamestown | 7.185% | Ward |
Ward | 7.185% | Ward |
Hygiene | 5.185% | Boulder |
Allenspark | 5.185% | Boulder |
Pinecliffe | 5.185% | Boulder |
Eldorado Springs | 5.185% | Boulder |
Colorado Sales Tax Rates by Zip Code:
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Boulder County, Colorado has a maximum sales tax rate of 9.435% and an approximate population of 242,553.
Sales tax rates in Boulder County are determined by seven different tax jurisdictions, Boulder, Boulder Oldtn Niwot Ld Sp, Lafayette, Longmont, Lyons, Nederland and Ward.
Back to Colorado Sales Tax Handbook Sales tax rates for Boulder County are current as of February 2025