Larimer County, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 7th-largest in Colorado
The population of Larimer County, Colorado is 363,561 as of the 2023 American Community Survey, making it the 7th-largest county in Colorado. The median household income is $91,364, the median home value is $532,200, and the median age is 36.6.
The population of Larimer County has grown 24.7% since 2010 (300,453 → 374,574), a +1.59% annualized rate.
363,561
Population
+1.59%
Annual growth
140
People / sq mi
$91,364
Median Income
$532,200
Median Home Value
Larimer County covers 2,596 sq mi of land at 140.1 people per square mile.
About Larimer County, CO
Larimer County is a county in Colorado with a population of 363,561. It ranks #7 among counties in Colorado by population. The median age is 36.6, younger than the national median. The population is 50.0% male and 50.0% female.
The median household income in Larimer County is $91,364, above the US median of $74,580. 4.6% of residents live below the federal poverty level. Home values sit at a median of $532,200, with monthly rent averaging $1,677. The homeownership rate of 64.3% is close to the national rate of 64.8%.
Educational attainment in Larimer County reflects 51.7% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 18.9% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 23.3 minutes each way.
Larimer County Population History (2010-2024)
The county of Larimer County had a population of 300,453 in 2010 and 374,574 in 2024, a 24.7% growth over 14 years. The peak was 374,574 in 2024. Average annual growth rate: 1.59%.
374,574
Population (2024)
300,453
Population (2010)
374,574
Peak (2024)
1.59%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 300,453 |
| 2011 | 305,320 |
| 2012 | 310,983 |
| 2013 | 316,426 |
| 2014 | 324,272 |
| 2015 | 333,637 |
| 2016 | 339,394 |
| 2017 | 344,509 |
| 2018 | 351,045 |
| 2019 | 357,241 |
| 2020 | 359,932 |
| 2021 | 362,785 |
| 2022 | 368,017 |
| 2023 | 371,530 |
| 2024 | 374,574 |
Race & Ethnicity
| White | 84.1% |
| Black or African American | 1.0% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.1% |
Age & Sex
36.6
Median Age
50.0%
Female
50.0%
Male
16.8%
Age 65+
Age Distribution
Children (under 15): 15.2% · Seniors (65+): 16.8%
Income & Poverty
| Median household income | $91,364$-1,106 vs state |
| Mean household income | $118,812 |
| Per-capita income | $49,323 |
| Poverty rate | 4.6%-1.3% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 64.0% |
Top Industries by Employment
The largest employment sector in Larimer County is professional & business services, accounting for 24.8% of workers.
How residents commute
0.9%
Drive alone
2.8%
Carpool
68.4%
Public transit
18.9%
Work from home
23.3 min
Avg commute
Housing
$532,200+$30,000 vs state
Median home value
$1,677
Median rent
64.3%
Homeownership rate
161,882
Total housing units
93.6%
Occupied
6.4%
Vacant
35.7%
Renter-occupied
Social & access
94.3%
With health insurance
98.0%
With broadband internet
54.4%
Foreign-born
6.3%
Veterans (18+)
10.3%
With a disability
91.7%
Speak language other than English at home
Education
96.6%
High School+
51.7%
Bachelor's+
Largest cities in Colorado
Other counties in Colorado
Part of Colorado
Metro areas in Colorado
County rankings
Frequently Asked Questions
Larimer County, Colorado has a population of 363,561 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 7th-largest county in Colorado. Population density is 140 people per square mile.
The population of Larimer County has grown 24.7% since 2010 (300,453 → 374,574), a +1.59% annualized rate.
The median household income in Larimer County, Colorado is $91,364, with mean (average) household income of $118,812 and per-capita income of $49,323. 4.6% of residents live below the federal poverty level.
In Larimer County, the largest racial and ethnic groups are White (84.1%), Hispanic or Latino (2.0%), Black or African American (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Larimer County, Colorado is 36.6 years. Residents are 50.0% female and 50.0% male.
The median home value in Larimer County is $532,200 and median monthly rent is $1,677. 64.3% of occupied housing units are owner-occupied. The county has 161,882 total housing units, 6.4% of which are vacant.
The largest employment sector in Larimer County, Colorado is professional, scientific, and management services, employing 24.8% of workers. The unemployment rate is 3.0%.
Denver is among the largest cities associated with Larimer County, Colorado, with a population of 713,734.
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Full rankings of Colorado counties
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.