Jefferson County, Colorado sales tax rate: 4.5%
The county-wide general sales tax rate in Jefferson County, Colorado is 4.5%, of which 2.9% is the Colorado state rate. Some cities and districts add more, up to 8.75% in Westminster.
Breakdown of the highest rate, 8.75%
| Level | Jurisdiction | Rate |
|---|---|---|
| State | Colorado | 2.9% |
| County | Jefferson County | 0.5% |
| City | Largest city in county | 4.25% |
| Special | Transit / district | 1.1% |
Neighboring counties
- Adams County, CO 3.75%
- Arapahoe County, CO 5.0%
- Boulder County, CO 5.335%
- Broomfield County, CO 9.0%
- Clear Creek County, CO 5.55%
- Denver County, CO 9.15%
- Douglas County, CO 4.0%
- Gilpin County, CO 2.9%
- Park County, CO 3.9%
Other counties in Colorado
- Adams County 3.75%
- Alamosa County 5.9%
- Arapahoe County 5.0%
- Archuleta County 6.9%
- Baca County 2.9%
- Bent County 3.9%
- Boulder County 5.335%
- Broomfield County 9.0%
- Chaffee County 5.65%
- Cheyenne County 2.9%
- Clear Creek County 5.55%
- Conejos County 4.9%
- Costilla County 4.9%
- Crowley County 4.9%
- Custer County 7.9%
- Delta County 6.5%
- Denver County 9.15%
- Dolores County 4.9%
- Douglas County 4.0%
- Eagle County 4.9%
- El Paso County 5.13%
- Elbert County 3.9%
- Fremont County 5.4%
- Garfield County 7.15%
- Gilpin County 2.9%
- Grand County 4.2%
- Gunnison County 3.9%
- Hinsdale County 9.15%
- Huerfano County 5.9%
- Jackson County 6.9%
- Kiowa County 4.9%
- Kit Carson County 2.9%
- La Plata County 5.9%
- Lake County 6.9%
- Larimer County 3.95%
- Las Animas County 4.4%
- Lincoln County 4.9%
- Logan County 3.9%
- Mesa County 5.27%
- Mineral County 9.5%
- Moffat County 4.9%
- Montezuma County 3.3%
- Montrose County 4.65%
- Morgan County 2.9%
- Otero County 3.9%
- Ouray County 9.05%
- Park County 3.9%
- Phillips County 3.9%
- Pitkin County 7.15%
- Prowers County 3.9%
- Pueblo County 3.9%
- Rio Blanco County 6.5%
- Rio Grande County 7.5%
- Routt County 3.9%
- Saguache County 5.4%
- San Juan County 10.4%
- San Miguel County 4.65%
- Sedgwick County 6.9%
- Summit County 8.375%
- Teller County 5.4%
- Washington County 4.4%
- Weld County 2.9%
- Yuma County 2.9%
Rates as of Jan 2026. Source: EvvyTools US Sales Tax Rates by ZIP Code (2026). General rate on tangible goods; not tax advice. Verify with your state Department of Revenue before filing or pricing.