What is the property tax rate in Longmont, CO?

Longmont has an estimated effective property tax rate of 0.52%. On a median home valued at $541,400, homeowners pay approximately $2,804 per year in property taxes.

How does Longmont compare to Boulder County?

Longmont's effective rate of 0.52% is 2% lower than the Boulder County average of 0.53%. The county-wide median annual tax is $3,998, while Longmont homeowners pay an estimated $2,804.

How much are property taxes in Longmont on a $300,000 home?

Based on Longmont's effective rate of 0.52%, property taxes on a $300,000 home would be approximately $1,560 per year, or about $130 per month.

Longmont Property Tax Rate

Boulder County, Colorado

0.52%effective rate

Longmont is located in Boulder County, Colorado. Homeowners in Longmont pay a median of $2,804 per year in property taxes on a home valued at $541,400, resulting in an effective tax rate of 0.52%. This is 2% lower than the Boulder County average of 0.53%.

Effective Tax Rate🏠

0.52%

vs 0.53% county avg

Est. Annual Tax💰

$2,804

Per year

Median Home Value📊

$541,400

2024 estimate

Population📍

98,958

Longmont, CO

How Longmont Compares

Longmont

0.52%

Boulder County Average

0.53%

Colorado Average

0.48%

National Average

0.92%

Cities in Boulder County

Compare property tax rates for 3 cities in Boulder County, Colorado.

City	Population	Annual Tax	Rate
Longmont	98,958	$2,804	0.52%
Boulder	106,274	$5,023	0.51%
Lafayette	30,471	$3,066	0.47%

About Property Taxes in Longmont

Property taxes in Longmont are collected by Boulder County. Tax exemptions available to Boulder County residents — including homestead, senior, and disability exemptions — also apply to homeowners in Longmont. For detailed information on available exemptions and the county tax collector, see the Boulder County property tax page.

Property Tax Calculator

Estimate your annual property tax in Longmont

Home Value

$50k$2M

Apply homestead exemption ($100,000 school tax reduction)

Estimated Annual Property Tax

$1,560

$130/month · Rate: 0.52%

Boulder County Property Taxes

County-level data, exemptions, historical trends, and tax collector info.

View county details →

Colorado Property Taxes

Statewide rates, all 64 counties, and exemptions.

View state details →

Think your property tax is too high?

Homeowners save an average of $1,148/year by appealing their assessment.

Learn How to Appeal →

Frequently Asked Questions

Data Source: U.S. Census Bureau, 2024 American Community Survey 5-Year Estimates. City-level tax data is derived from Census place-level statistics. Effective tax rates are calculated by dividing median real estate taxes paid by median home value. Actual property tax rates may vary based on local taxing jurisdictions, exemptions, and assessment practices. This information is for general reference only and should not be used as a substitute for professional tax advice.