Adams County, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 5th-largest in Colorado
The population of Adams County, Colorado is 524,408 as of the 2023 American Community Survey, making it the 5th-largest county in Colorado. The median household income is $91,387, the median home value is $458,400, and the median age is 34.6.
The population of Adams County has grown 22.4% since 2010 (443,692 → 542,973), a +1.45% annualized rate.
524,408
Population
+1.45%
Annual growth
449
People / sq mi
$91,387
Median Income
$458,400
Median Home Value
Adams County covers 1,167 sq mi of land at 449.4 people per square mile.
About Adams County, CO
Adams County is a county in Colorado with a population of 524,408. It ranks #5 among counties in Colorado by population. The median age is 34.6, younger than the national median. The population is 50.8% male and 49.2% female.
The median household income in Adams County is $91,387, above the US median of $74,580. 7.0% of residents live below the federal poverty level. Home values sit at a median of $458,400, with monthly rent averaging $1,713. The homeownership rate of 68.9% is higher than the national rate of 64.8%.
Educational attainment in Adams County reflects 28.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 13.4% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 29.7 minutes each way.
Adams County Population History (2010-2024)
The county of Adams County had a population of 443,692 in 2010 and 542,973 in 2024, a 22.4% growth over 14 years. The peak was 542,973 in 2024. Average annual growth rate: 1.45%.
542,973
Population (2024)
443,692
Population (2010)
542,973
Peak (2024)
1.45%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 443,692 |
| 2011 | 452,209 |
| 2012 | 460,568 |
| 2013 | 469,995 |
| 2014 | 479,954 |
| 2015 | 490,448 |
| 2016 | 497,735 |
| 2017 | 503,717 |
| 2018 | 511,485 |
| 2019 | 516,575 |
| 2020 | 520,517 |
| 2021 | 523,603 |
| 2022 | 528,356 |
| 2023 | 535,677 |
| 2024 | 542,973 |
Race & Ethnicity
| White | 60.2% |
| Black or African American | 3.5% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 4.4% |
| Two or More Races | 0.0% |
Age & Sex
34.6
Median Age
49.2%
Female
50.8%
Male
11.0%
Age 65+
Age Distribution
Children (under 15): 20.9% · Seniors (65+): 11.0%
Income & Poverty
| Median household income | $91,387$-1,083 vs state |
| Mean household income | $112,415 |
| Per-capita income | $40,167 |
| Poverty rate | 7.0%+1.1% vs state |
| Unemployment rate | 3.3% |
| Employment-to-population | 68.5% |
Top Industries by Employment
The largest employment sector in Adams County is professional & business services, accounting for 17.6% of workers.
How residents commute
2.1%
Drive alone
1.1%
Carpool
71.4%
Public transit
13.4%
Work from home
29.7 min
Avg commute
Housing
$458,400$-43,800 vs state
Median home value
$1,713
Median rent
68.9%
Homeownership rate
191,765
Total housing units
96.5%
Occupied
3.5%
Vacant
31.1%
Renter-occupied
Social & access
88.9%
With health insurance
96.5%
With broadband internet
31.7%
Foreign-born
6.2%
Veterans (18+)
11.3%
With a disability
70.7%
Speak language other than English at home
Education
85.0%
High School+
28.0%
Bachelor's+
Largest cities in Colorado
Other counties in Colorado
Part of Colorado
Metro areas in Colorado
County rankings
Common questions about Adams County, CO
Frequently Asked Questions
Adams County, Colorado has a population of 524,408 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 5th-largest county in Colorado. Population density is 449 people per square mile.
The population of Adams County has grown 22.4% since 2010 (443,692 → 542,973), a +1.45% annualized rate.
The median household income in Adams County, Colorado is $91,387, with mean (average) household income of $112,415 and per-capita income of $40,167. 7.0% of residents live below the federal poverty level.
In Adams County, the largest racial and ethnic groups are White (60.2%), Hispanic or Latino (4.4%), Black or African American (3.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Adams County, Colorado is 34.6 years. Residents are 49.2% female and 50.8% male.
The median home value in Adams County is $458,400 and median monthly rent is $1,713. 68.9% of occupied housing units are owner-occupied. The county has 191,765 total housing units, 3.5% of which are vacant.
The largest employment sector in Adams County, Colorado is professional, scientific, and management services, employing 17.6% of workers. The unemployment rate is 3.3%.
Denver is among the largest cities associated with Adams County, Colorado, with a population of 713,734.
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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.