Boulder County, Colorado Property Taxes
Median Boulder County effective property tax rate: 0.50%, significantly lower than the national median of 1.02%.
Median Boulder County home value: $722,900
Median annual Boulder County tax bill: $3,545, $1,145 higher than the national median property tax bill of $2,400.
How are property taxes in Boulder County calculated?
Property taxes in Boulder County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Boulder or another part of Boulder County, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Boulder County, Colorado Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.5%
Estimate Property Tax Bill
$3,615
$3,354
$1,102
Average Tax Savings
Property Tax Rates Across Boulder County, Colorado
Local government entities set tax rates, which can vary widely within a state. Each county estimates its required budget to provide essential services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate. While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Boulder County's effective property tax rate offers an interesting perspective when compared to other counties in Colorado or the U.S. median property tax rate. The county's tax rate is notably lower than the national median property tax rate of 1.02%. This means residents may benefit from comparatively lower property tax bills, potentially making it an attractive area for property owners. However, it is important to consider that within the county itself, there can be variations. For instance, Erie has the highest median tax rate, while Broomfield boasts the lowest. Understanding these differences can be crucial for property owners when considering investments or evaluating property expenses in Boulder County.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Boulder County Tax Rate
0.50%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Colorado Tax Rate
0.55%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Boulder County, Colorado
City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Allenspark | 0.27% | 0.33% | 0.35% | 0.38% | 0.40% |
Black Hawk | 0.40% | 0.44% | 0.48% | 0.49% | 0.50% |
Boulder | 0.41% | 0.46% | 0.49% | 0.53% | 0.57% |
Broomfield | 0.37% | 0.39% | 0.43% | 0.45% | 0.47% |
Eldorado Springs | 0.41% | 0.51% | 0.58% | 0.66% | 0.72% |
Erie | 0.46% | 0.55% | 0.58% | 0.79% | 0.83% |
Golden | 0.34% | 0.42% | 0.44% | 0.46% | 0.51% |
Jamestown | 0.34% | 0.43% | 0.48% | 0.51% | 0.54% |
Lafayette | 0.37% | 0.45% | 0.47% | 0.50% | 0.53% |
Longmont | 0.38% | 0.48% | 0.50% | 0.51% | 0.54% |
Louisville | 0.34% | 0.42% | 0.46% | 0.49% | 0.54% |
Lyons | 0.35% | 0.47% | 0.54% | 0.62% | 0.64% |
Nederland | 0.41% | 0.46% | 0.53% | 0.61% | 0.64% |
Niwot | 0.42% | 0.45% | 0.50% | 0.52% | 0.55% |
Superior | 0.33% | 0.48% | 0.51% | 0.54% | 0.60% |
Unincorporated | 0.27% | 0.35% | 0.45% | 0.53% | 0.62% |
Ward | 0.32% | 0.40% | 0.46% | 0.50% | 0.53% |
Berthoud | N/A | N/A | N/A | N/A | N/A |
Blackhawk | N/A | N/A | N/A | N/A | N/A |
Frederick | N/A | N/A | N/A | N/A | N/A |
Hygiene | N/A | N/A | N/A | N/A | N/A |
Pinecliffe | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$1,102
Average Boulder County Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Assessment Values Across Boulder County, Colorado
When examining property taxes in Boulder County, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Boulder County Assessor's Office estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices: In Boulder County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of May. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Boulder County. For example, the median tax bill in Boulder County is $2,400, with tax bills ranging significantly across the county. Broomfield has the highest median home price at $1,236,400.
Property Tax Assessment Values Across Boulder County, Colorado
Source: Ownwell

$410,300
$977,725
$1,545,150
Median Boulder County Market Value
$722,900
Median Colorado Market Value
$405,540
Median United States Market Value
$235,294
Property Tax Assessment Values Across Boulder County, Colorado
City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Allenspark | $140,138 | $291,300 | $410,300 | $579,296 | $803,660 |
Black Hawk | $519,480 | $635,650 | $717,100 | $849,050 | $949,460 |
Boulder | $317,929 | $575,746 | $999,800 | $1,453,800 | $2,114,500 |
Broomfield | $872,270 | $1,038,100 | $1,236,400 | $1,599,425 | $2,064,250 |
Eldorado Springs | $13,120 | $516,800 | $706,100 | $1,033,900 | $1,333,960 |
Erie | $543,910 | $631,326 | $764,750 | $897,400 | $1,082,100 |
Golden | $137,561 | $352,600 | $541,400 | $700,100 | $861,660 |
Jamestown | $149,881 | $330,500 | $512,700 | $648,900 | $849,200 |
Lafayette | $284,919 | $481,600 | $643,700 | $933,300 | $1,191,020 |
Longmont | $372,300 | $454,000 | $564,900 | $736,900 | $998,800 |
Louisville | $433,180 | $632,500 | $796,300 | $1,003,500 | $1,260,600 |
Lyons | $302,180 | $505,500 | $733,400 | $990,300 | $1,162,020 |
Nederland | $312,540 | $448,525 | $652,200 | $862,725 | $1,088,650 |
Niwot | $369,068 | $676,775 | $1,093,150 | $1,591,875 | $2,461,130 |
Superior | $331,367 | $579,100 | $829,600 | $1,040,900 | $1,253,610 |
Unincorporated | $13,259 | $84,416 | $217,400 | $513,592 | $854,538 |
Ward | $114,580 | $217,076 | $444,100 | $627,325 | $808,730 |
Berthoud | N/A | N/A | N/A | N/A | N/A |
Blackhawk | N/A | N/A | N/A | N/A | N/A |
Frederick | N/A | N/A | N/A | N/A | N/A |
Hygiene | N/A | N/A | N/A | N/A | N/A |
Pinecliffe | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$1,102
Average Boulder County Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Bills Across Boulder County, Colorado
Median Boulder County Tax Bill
$3,545
Median Colorado Tax Bill
$2,283
Median United States Tax Bill
$2,400
Property Tax Bills Across Boulder County, Colorado
City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Allenspark | $452 | $953 | $1,435 | $2,028 | $2,766 |
Black Hawk | $2,495 | $2,801 | $3,248 | $4,147 | $4,436 |
Boulder | $1,722 | $2,950 | $4,713 | $6,824 | $10,037 |
Broomfield | $3,525 | $4,303 | $5,239 | $6,750 | $9,251 |
Eldorado Springs | $295 | $3,244 | $4,506 | $6,014 | $7,913 |
Erie | $2,999 | $3,547 | $4,401 | $6,594 | $8,089 |
Golden | $613 | $1,491 | $2,348 | $3,037 | $3,790 |
Jamestown | $586 | $1,430 | $2,370 | $3,189 | $4,049 |
Lafayette | $1,463 | $2,222 | $3,000 | $4,263 | $5,505 |
Longmont | $1,717 | $2,184 | $2,767 | $3,672 | $5,012 |
Louisville | $1,413 | $2,711 | $3,633 | $4,762 | $6,382 |
Lyons | $1,373 | $2,259 | $4,012 | $5,743 | $7,128 |
Nederland | $1,591 | $2,411 | $3,414 | $4,526 | $5,647 |
Niwot | $1,972 | $3,310 | $5,131 | $7,715 | $11,832 |
Superior | $1,540 | $3,003 | $4,334 | $5,612 | $6,719 |
Unincorporated | $71 | $350 | $875 | $2,137 | $3,685 |
Ward | $408 | $889 | $1,875 | $2,996 | $3,787 |
Berthoud | N/A | N/A | N/A | N/A | N/A |
Blackhawk | N/A | N/A | N/A | N/A | N/A |
Frederick | N/A | N/A | N/A | N/A | N/A |
Hygiene | N/A | N/A | N/A | N/A | N/A |
Pinecliffe | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$1,102
Average Boulder County Tax Savings
Save on Your Property Taxes and More With Ownwell
Want to lower your Boulder County property taxes?
Property Tax Appeals in Colorado
In Boulder County, CO, homeowners who believe their property tax assessments are too high have the right to appeal. The process begins with a review of the property's assessed value, which determines the amount of property tax owed. If a homeowner disagrees with the assessment, they can file an appeal with the Boulder County Assessor's Office. This appeal must be submitted within a specified timeframe, typically following the receipt of the assessment notice.
Once the appeal is filed, the next step involves providing evidence that supports the claim of overvaluation. This might include recent sales data of comparable properties, independent appraisals, or evidence of property defects that could affect its value. The goal is to demonstrate that the assessed value is higher than the property's actual market value.
The appeal is then reviewed by the Boulder County Board of Equalization, which listens to the homeowner's case and examines the evidence presented. The board can decide to lower the assessed value, maintain the current assessment, or, in some cases, increase it if they find the property was undervalued.
Ownwell assists homeowners through this process by offering expert guidance and support. Our team of property tax consultants can help gather the necessary evidence, prepare a compelling case, and represent homeowners during hearings. By leveraging our expertise, homeowners can increase their chances of a successful appeal, potentially resulting in reduced property taxes. With Ownwell, the often complex and daunting appeal process becomes more manageable, providing homeowners with peace of mind and the possibility of financial relief.
Exemptions in Colorado
Boulder County offers several property tax exemption programs designed to ease the financial burden on homeowners. One of the primary exemptions available is the Senior Property Tax Exemption, which benefits residents aged 65 and older who have lived in their primary residence for at least ten consecutive years. This exemption reduces the assessed value of the home, thus lowering the property tax bill.
Another significant exemption is the Disabled Veteran Exemption, available to veterans with a service-connected disability rating of 50% or more. This exemption also applies to the surviving spouses of disabled veterans, providing substantial tax relief by reducing the home's assessed value.
For homeowners who primarily reside in their Boulder County property, the Homestead Exemption offers additional savings. This exemption ensures that a portion of the home's assessed value is exempt from taxation, making it easier for residents to manage their property tax obligations.
To apply for these exemptions, homeowners must submit the necessary documentation to the Boulder County Assessor's Office by the specified deadline. Ownwell can assist homeowners in navigating the application process, ensuring they understand the eligibility requirements and submit accurate, timely applications. By leveraging Ownwell's expertise, homeowners can maximize their savings and take full advantage of the available property tax relief programs.
Available Exemptions
Senior
Disabled
Veteran
Non-Profit
Don't miss the deadline to appeal!
Dates | |
---|---|
Appeal Deadline | June 9 |
Links | |
---|---|
Boulder Tax Assessor | |
Website | maps.boco.solutions |
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