Longmont, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Longmont, Colorado is 98,958 as of the 2023 American Community Survey, making it the 14th-largest city in Colorado. The median household income is $89,724, the median home value is $541,400, and the median age is 40.1.
The population has grown 15.5% since 2010 (86,440 → 99,818).
98,958
Population
3382
People / sq mi
$89,724
Median Income
$541,400
Median Home Value
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Longmont covers 29.3 sq mi of land at 3382 people per square mile.
About Longmont, CO
Longmont is distinguished by its share of foreign-born residents, 50.4% of the population. Longmont is a city in Colorado with a population of 98,958. It ranks #14 among cities in Colorado by population.
The typical household here earns about $89,724, above the US median of $78,538. About 5.2% of residents live below the federal poverty level, below the national 12.4%. The median home value is $541,400, with typical rent around $1,755.
College attainment is above the local norm at 46.3%, above the national 35.0%. About 19.4% of workers primarily work from home, above the national 14.0%, and the average commute runs about 25 minutes each way.
The large foreign-born share is a defining thread in Longmont, shaping language, household composition, and the labor force behind the economic figures above.
Longmont city Population History (2010-2024)
The city of Longmont city had a population of 86,440 in 2010 and 99,818 in 2024, a 15.5% growth over 14 years. The peak was 99,818 in 2024. Average annual growth rate: 1.04%.
99,818
Population (2024)
86,440
Population (2010)
99,818
Peak (2024)
1.04%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 86,440 |
| 2011 | 87,691 |
| 2012 | 88,903 |
| 2013 | 90,221 |
| 2014 | 90,623 |
| 2015 | 92,280 |
| 2016 | 93,269 |
| 2017 | 94,637 |
| 2018 | 96,536 |
| 2019 | 97,261 |
| 2020 | 99,206 |
| 2021 | 99,741 |
| 2022 | 99,006 |
| 2023 | 99,105 |
| 2024 | 99,818 |
Race & Ethnicity
| White | 76.7% |
| Black or African American | 1.0% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Economy & Income
$89,724
Median Household Income
$47,338
Per Capita Income
5.2%
Poverty Rate
3.0%
Unemployment Rate
Housing
$541,400
Median Home Value
$1,755
Median Rent
62.6%
Owner-Occupied
Education
92.0%
High School+
46.3%
Bachelor's+
Commute
1.9%
Drive Alone
67.2%
Public Transit
19.4%
Work From Home
25.4 min
Avg Commute
Community Profile
50.4%
Foreign Born
81.2%
Non-English at Home
6.7%
Veterans
11.7%
With Disability
93.3%
Health Insurance
97.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 21.5% |
| Finance, Insurance & Real Estate | 17.4% |
| Manufacturing | 13.1% |
| Education, Health Care & Social Services | 8.2% |
| Construction | 7.2% |
| Arts, Entertainment & Food Services | 4.9% |
| Information | 3.7% |
| Public Administration | 3.5% |
| Retail Trade | 3.2% |
| Transportation & Warehousing | 2.5% |
| Agriculture & Mining | 0.9% |
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Frequently Asked Questions
Longmont, Colorado has a population of 98,958 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 14th-largest city in Colorado.
The median household income in Longmont, Colorado is $89,724, with 5.2% of residents living below the federal poverty level.
The median home value in Longmont, Colorado is $541,400, with median monthly rent at $1,755 and a homeownership rate of 62.6%.
The median age in Longmont, Colorado is 40.1 years. The population is 49.6% male and 50.4% female.
The population has grown 15.5% since 2010 (86,440 → 99,818).
Where to stay in Longmont
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.