Washington County, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 53rd-largest in Colorado
The population of Washington County, Colorado is 4,839 as of the 2023 American Community Survey, making it the 53rd-largest county in Colorado. The median household income is $65,164, the median home value is $218,300, and the median age is 41.2.
The population of Washington County has declined 0.8% since 2010 (4,808 → 4,771), a -0.06% annualized rate.
4,839
Population
-0.06%
Annual growth
2
People / sq mi
$65,164
Median Income
$218,300
Median Home Value
Washington County covers 2,518 sq mi of land at 1.9 people per square mile.
About Washington County, CO
Washington County is a county in Colorado with a population of 4,839. It ranks #53 among counties in Colorado by population. The median age is 41.2, older than the national median. The population is 52.4% male and 47.6% female.
The median household income in Washington County is $65,164, below the US median of $74,580. 4.9% of residents live below the federal poverty level. Home values sit at a median of $218,300, with monthly rent averaging $991. The homeownership rate of 71.7% is higher than the national rate of 64.8%.
Educational attainment in Washington County reflects 24.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 12.4% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 21.2 minutes each way.
Washington County Population History (2010-2024)
The county of Washington County had a population of 4,808 in 2010 and 4,771 in 2024, a -0.8% growth over 14 years. The peak was 4,909 in 2017. Average annual growth rate: -0.05%.
4,771
Population (2024)
4,808
Population (2010)
4,909
Peak (2017)
-0.05%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 4,808 |
| 2011 | 4,750 |
| 2012 | 4,689 |
| 2013 | 4,731 |
| 2014 | 4,720 |
| 2015 | 4,775 |
| 2016 | 4,824 |
| 2017 | 4,909 |
| 2018 | 4,861 |
| 2019 | 4,869 |
| 2020 | 4,814 |
| 2021 | 4,869 |
| 2022 | 4,840 |
| 2023 | 4,859 |
| 2024 | 4,771 |
Race & Ethnicity
| White | 88.6% |
| Black or African American | 1.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Age & Sex
41.2
Median Age
47.6%
Female
52.4%
Male
21.8%
Age 65+
Age Distribution
Children (under 15): 18.3% · Seniors (65+): 21.8%
Income & Poverty
| Median household income | $65,164$-27,306 vs state |
| Mean household income | $82,841 |
| Per-capita income | $36,138 |
| Poverty rate | 4.9%-1.0% vs state |
| Unemployment rate | 2.0% |
| Employment-to-population | 57.1% |
Top Industries by Employment
The largest employment sector in Washington County is professional & business services, accounting for 24.2% of workers.
How residents commute
0.1%
Drive alone
5.5%
Carpool
71.5%
Public transit
12.4%
Work from home
21.2 min
Avg commute
Housing
$218,300$-283,900 vs state
Median home value
$991
Median rent
71.7%
Homeownership rate
2,280
Total housing units
90.8%
Occupied
9.2%
Vacant
28.3%
Renter-occupied
Social & access
93.7%
With health insurance
92.7%
With broadband internet
27.2%
Foreign-born
6.9%
Veterans (18+)
12.5%
With a disability
93.2%
Speak language other than English at home
Education
89.7%
High School+
24.9%
Bachelor's+
Largest cities in Colorado
Other counties in Colorado
Part of Colorado
Metro areas in Colorado
County rankings
Frequently Asked Questions
Washington County, Colorado has a population of 4,839 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 53rd-largest county in Colorado. Population density is 2 people per square mile.
The population of Washington County has declined 0.8% since 2010 (4,808 → 4,771), a -0.06% annualized rate.
The median household income in Washington County, Colorado is $65,164, with mean (average) household income of $82,841 and per-capita income of $36,138. 4.9% of residents live below the federal poverty level.
In Washington County, the largest racial and ethnic groups are White (88.6%), Hispanic or Latino (1.8%), Black or African American (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Washington County, Colorado is 41.2 years. Residents are 47.6% female and 52.4% male.
The median home value in Washington County is $218,300 and median monthly rent is $991. 71.7% of occupied housing units are owner-occupied. The county has 2,280 total housing units, 9.2% of which are vacant.
The largest employment sector in Washington County, Colorado is professional, scientific, and management services, employing 24.2% of workers. The unemployment rate is 2.0%.
Denver is among the largest cities associated with Washington 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.