Thornton, ColoradoSales Tax Rate 2025

Thornton is located in Adams County, Colorado. Thornton sales tax rate is 8.5%.

The total sales tax rate in Thornton comprises the state tax, the sales tax for county, and any applicable special or district taxes. The city also imposes an additional sales tax of 3.75%. The table below provides a breakdown of the sales tax rate by jurisdiction.

Combined Sales Tax Rate	8.50%
Colorado	2.90%
Adams County	0.75%
Thornton	3.75%
District / Special Tax	1.10%

Thornton Sales Tax Calculator

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The TaxHero sales tax calculator provides a combined sales tax rate based on a full address lookup. A complete address ensures precision since ZIP codes may cross different tax jurisdictions. Results are for reference and may need additional context for compliance. Contact us today for a demo and learn how TaxHero can support your business.

Thornton District and Special Tax Rates+

To help you identify the correct sales tax rate in Thornton, you may look up the sales tax rate by address and ZIP code in our calculator.

Thornton Finance Department Contact Information+

State: Colorado Department of Revenue
City: Thornton Finance Department
Contact: 303-538-7200

ZIP codes in Thornton, CO+

80229 80233 80241 80260 80602 80603

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