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
Longmont covers 29.3 sq mi of land at 3382 people per square mile.
About Longmont, CO
Longmont is a city in Colorado with a population of 98,958. It ranks #14 among cities in Colorado by population. The median age is 40.1, older than the national median. The population is 49.6% male and 50.4% female.
The median household income in Longmont is $89,724, above the US median of $74,580. 5.2% of residents live below the federal poverty level. Home values sit at a median of $541,400, with monthly rent averaging $1,755. The homeownership rate of 62.6% is close to the national rate of 64.8%.
Educational attainment in Longmont reflects 46.3% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 19.4% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 25.4 minutes each way.
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% |
Largest cities in Colorado
Largest counties in Colorado
Part of Colorado
Metro areas in Colorado
City rankings
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).
More from Colorado
Population 713,734
Population 483,099
Population 390,201
Population 169,705
Population 156,309
Full rankings of Colorado cities by population
Statewide data for Colorado
Population, race, income, age, and trends across Colorado
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.