Boulder County property tax
Homeowners in Boulder County, Colorado typically pay about 0.53% of their home's value in property tax each year — a median bill of $3,998 on a median home value of $756,300.
Typical effective rate
0.53%
higher than 81% of U.S. counties
Median tax paid
$3,998
per year
Median home value
$756,300
In CO
#6
of 64 ranked counties
At a glance
- Effective rate 0.53% — 44% lower than the U.S. median of 0.94%, and 10% higher than the Colorado median of 0.48%.
- With vs. without a mortgage — median tax $4,010 for mortgaged homes, $3,977 for homes owned outright.
- State ranking — 6th highest effective rate of 64 ranked Colorado counties; nationally it sits around the 19th percentile.
Estimate a bill for Boulder County
Apply this county's typical effective rate (0.53%) to a home value of your choice.
Frequently asked questions
What is the property tax rate in Boulder County, CO?
The typical effective property-tax rate in Boulder County is 0.53% of a home's value per year, based on median taxes paid ($3,998) divided by the median home value ($756,300) in the Census ACS 2020–2024 5-year estimates. This is a typical burden for comparison, not a statutory mill rate.
How much is property tax on a typical home in Boulder County?
The median owner-occupied home in Boulder County is valued at $756,300, and the median real estate tax paid is $3,998 per year. Homes with a mortgage have a median tax of $4,010, versus $3,977 for homes without one.
How does Boulder County compare to the rest of Colorado?
Boulder County's effective rate is 10% higher than the Colorado median, ranking 6th of 64 ranked counties in the state.
Compare nearby Colorado counties
Counties ranked closest to Boulder County by in-state effective rate. Open the comparison tool or see all Colorado counties.
| In-state | County | Effective rate | Median tax |
|---|---|---|---|
| 3 | Kiowa County | 0.58% | $939 |
| 4 | Phillips County | 0.56% | $1,456 |
| 5 | Douglas County | 0.55% | $3,947 |
| 7 | Arapahoe County | 0.52% | $2,938 |
| 8 | Weld County | 0.52% | $2,440 |
| 9 | Morgan County | 0.52% | $1,751 |
Official data & resources for Boulder County
- Boulder County Census profile (data.census.gov) — housing, value and tax figures for this county.
- Table B25103 for Boulder County — median real estate taxes paid (the source for the tax figures above).
- Table B25077 for Boulder County — median home value.
- Federal forms & is property tax deductible? — IRS Pub 530, Schedule A and the SALT cap, plus your state tax agency.
Finding your exact bill
Your county or municipal assessor (sometimes called the appraisal district, property appraiser, or tax collector) sets the assessed value and the exact millage that produces your bill. Search for "[county name] [state] assessor" or "property tax" on an official .gov site.
Figures on this page are Census survey medians for the whole county (2020–2024 5-year), not an assessment of any individual property. Rates, exemptions and assessment practices vary by municipality and school district within a county.