Longmont, Colorado Demographics & Population 2026
During the 2020–2024 ACS period, Longmont, Colorado had a total population of 99,406, the 14th largest city in Colorado, with a median household income of $90,671, which is 5% lower than the state average. The poverty rate is 8.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Longmont Quick Facts
How Longmont Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 98,958 | 99,406 | +0.5% |
| Median household income | $89,724 | $90,671 | +1.1% |
| Median home value | $541,400 | $572,800 | +5.8% |
How Longmont Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 52 | National average: 61
Education
Educational Attainment (Adults 25+)
Longmont Rankings in Colorado
Explore Colorado Rankings
Other Cities in Weld County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Greeley | 110,806 | $69,881 | 15.1% | $402,500 |
| Erie | 33,808 | $173,349 | 2.3% | $736,500 |
| Evans | 22,396 | $75,563 | 13.5% | $351,000 |
| Firestone | 18,049 | $120,150 | 4.6% | $560,100 |
| Frederick | 16,651 | $129,460 | 3.3% | $568,300 |
| Severance | 10,130 | $124,572 | 5.2% | $528,500 |
| Fort Lupton | 8,897 | $80,889 | 17.6% | $416,000 |
| Milliken | 8,871 | $107,500 | 2.4% | $406,700 |
| Dacono | 6,530 | $104,559 | 3.9% | $482,800 |
| Mead | 5,919 | $125,357 | 1.4% | $585,100 |
Cities Similar to Longmont
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Boulder | 106,433 | $87,493 | $1,039,500 | 76.8% | 21.4% |
| Westminster | 115,484 | $100,272 | $532,400 | 44.6% | 7.3% |
| Greeley | 110,806 | $69,881 | $402,500 | 27.8% | 15.1% |
| Loveland | 78,410 | $84,604 | $479,000 | 39.0% | 8.5% |
| Centennial | 108,201 | $131,928 | $658,100 | 62.6% | 3.3% |
Population Overview
Longmont is a mid-sized community located in Colorado, within Weld County. The total population is 99,406. It ranks as the 14th most populous out of 472 Census-designated places in Colorado.
Age Demographics
The median age in Longmont is 40.3 years. This is 7% higher than the state median of 37.7 years.
Economy, Income & Housing
The median household income in Longmont is $90,671. This is 5% lower than the state median of $95,470. It is also 12% higher than the national median of $80,734. The poverty rate stands at 8.6%. This is 9% lower than the state poverty rate of 9.4%. The unemployment rate is 4.8%. This is 5% higher than the state rate of 4.6%. The median home value is $572,800. Housing costs are 6% higher than the state median of $539,400. The home-value-to-income ratio of 6.3x suggests that housing affordability is a significant concern for many residents. 62.5% of occupied housing units are owner-occupied. This homeownership rate is 6% lower than the state average of 66.2%.
Race & Ethnicity
The largest racial or ethnic group in Longmont is White (non-Hispanic), making up 66.7% of the population. Hispanic or Latino residents account for 24.0%. The Black or African American population (0.8%) is well below the state average of 3.8%.
Education
47.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 3% higher than the state rate of 45.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.6%. Notably, 18.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Longmont, Colorado is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Colorado state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 472 Census-designated places in Colorado. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Longmont, Colorado?
Longmont, Colorado has a population of 99,406 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Longmont, CO?
The median household income in Longmont is $90,671, which is 12% higher than the national median of $80,734.
What is the poverty rate in Longmont, CO?
The poverty rate in Longmont is 8.6%. This means approximately 8,486 residents live below the federal poverty line.
What is the racial makeup of Longmont, Colorado?
Longmont's population is 66.7% White, 0.8% Black, 24.0% Hispanic/Latino, and 3.3% Asian.
What is the median home value in Longmont, CO?
The median home value in Longmont is $572,800. The home-value-to-income ratio is 6.3x.
How educated is Longmont, Colorado?
47.0% of adults (25+) in Longmont hold a bachelor's degree or higher, and 18.9% hold a graduate or professional degree.