Boulder County, CO Property Tax Rate
Homeowners in Boulder County pay an effective 0.54% of home value in property tax — about $3,855 a year on the median $713,900 home, above the Colorado county median of 0.39%.
Boulder County, CO: 0.54% effective property tax — ~$3,855/yr on the median home.
- Effective rate0.54%
- Median home value$713,900
- Median annual bill$3,855
- CO county median0.39%
- U.S. county median0.84%
Source: U.S. Census ACS 2023 5-year (median taxes paid ÷ median value), compiled June 2026.
Boulder County vs. Colorado and the U.S.
| Effective rate | On the county's $713,900 median home | |
|---|---|---|
| Boulder County | 0.54% | $3,855 |
| Colorado county median | 0.39% | $2,784 |
| U.S. county median | 0.84% | $5,997 |
Median household income here is $102,772, putting the median tax bill at about 3.8% of income. Effective rates fold in homestead exemptions and assessment practice — they're what owners actually pay, which is why they beat statutory rates for comparison.
Highest & lowest rates in Colorado
| County | Effective rate | Median bill |
|---|---|---|
| Broomfield County | 0.62% | $3,916 |
| Adams County | 0.60% | $2,750 |
| Kiowa County | 0.58% | $862 |
| Douglas County | 0.55% | $3,707 |
| Jackson County | 0.21% | $525 |
| Gilpin County | 0.23% | $1,179 |
| Dolores County | 0.24% | $557 |
| Las Animas County | 0.24% | $515 |
Full picture: Colorado property tax calculator · interactive county atlas · all county pages.
Frequently asked questions
What is the property tax rate in Boulder County, CO?
The effective rate is about 0.54% of home value — the median homeowner pays roughly $3,855 a year on a $713,900 median home (ACS 2023 five-year data).
Is Boulder County's property tax high?
It's above the Colorado county median (0.39%) and below the U.S. county median (0.84%).
How is the effective rate calculated?
Median real-estate taxes paid ÷ median home value, from the Census American Community Survey — what owners actually pay, after exemptions, rather than the statutory millage.
Sources & methodology
Sources: Census ACS 2023 5-year tables B25103/B25077.
Effective rate = median real-estate taxes ÷ median home value (owner-occupied). Individual bills vary with exemptions, assessment timing and local levies — verify with the county assessor.