County data
Boulder County, CO Mortgage Calculator
Where is the home?
Enter a ZIP code to use that area's property tax rate and loan limit.
Try an example
Illustrative scenarios to see how price and down payment change the payment. Tap one to load it.
Estimated monthly payment
$0/month
& interest
- Principal & interest$0
- Property tax$0
- Home insurance$0
- HOA dues$0
- Mortgage insurance (PMI)$0
- Total interest over the loan
- $0
- Paid off
Compare loan terms
| Term | Monthly | Total interest |
|---|
Same price, down payment and rate. Real rates are usually lower for shorter terms.
Loan balance over time
| Year | Principal | Interest | Balance |
|---|
Monthly payment
$0 /mo
Boulder County at a glance
Median home value
$756,300
Property tax rate
0.53%
Colorado: 0.50% · U.S.: 1.05%
Median income
$103,994
Conforming loan limit
$879,750
Typical monthly cost of the median home
Principal and interest
$4,140
$605,040 loan at 7.28%, 30 years
Property tax
$334
0.53% of $756,300 a year
Together
$4,474
before insurance, HOA and PMI
Other large counties in Colorado
| County | Median home | Tax rate | Payment |
|---|---|---|---|
| El Paso County | $461,000 | 0.42% | $2,685 |
| Denver County | $616,000 | 0.45% | $3,603 |
| Arapahoe County | $561,200 | 0.53% | $3,320 |
| Jefferson County | $637,600 | 0.48% | $3,745 |
| Adams County | $484,200 | 0.65% | $2,913 |
| Douglas County | $713,600 | 0.56% | $4,239 |
| Larimer County | $569,100 | 0.50% | $3,352 |
| Weld County | $471,700 | 0.55% | $2,798 |
Frequently asked questions
What is the property tax rate in Boulder County, CO?
Homeowners with a mortgage in Boulder County pay a median of $4,010 a year in property tax on a median home value of $756,300, an effective rate of 0.53%. That is above the Colorado figure of 0.50% and below the U.S. median of 1.05%. It ranks 15 of 64 counties in Colorado for effective rate, highest first. Your own bill depends on the assessed value, the taxing districts and any exemptions.
How much is the monthly payment on a median-priced home in Boulder County?
On a $756,300 home with 20% down and a 30-year loan at 7.28% (the Freddie Mac weekly average), principal and interest is about $4,140 a month and property tax about $334, so roughly $4,474 before homeowners insurance, HOA dues and mortgage insurance. For comparison, the median household income here is $103,994 a year, so that payment is about 52% of it.
What is the conforming loan limit in Boulder County?
The 2026 one-unit conforming loan limit for Boulder County is $879,750, higher than the $832,750 that applies in most Colorado counties because it is a designated high-cost area. A conventional loan above that amount is a jumbo loan, which can have different rates and down payment requirements.
Where do these numbers come from?
Home values, property taxes and incomes are U.S. Census Bureau American Community Survey 5-year medians for the county. Loan limits come from the Federal Housing Finance Agency and rates from Freddie Mac. The methodology page lists each source and when it was retrieved.
Data and method. Home values, property taxes and incomes: U.S. Census Bureau, ACS 2024 5-year (2020-2024) (medians, with sampling error; property tax is for owners with a mortgage). Loan limits: FHFA. Rates: Freddie Mac weekly average as of October 1, 2026. Retrieved October 1, 2026. Payment figures assume 20% down, a 30-year fixed loan, and exclude insurance, HOA dues and mortgage insurance. Estimates only; see the methodology.