Douglas County, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 6th-largest in Colorado
The population of Douglas County, Colorado is 368,283 as of the 2023 American Community Survey, making it the 6th-largest county in Colorado. The median household income is $145,737, the median home value is $674,000, and the median age is 39.5.
The population of Douglas County has grown 37.3% since 2010 (287,011 → 393,995), a +2.29% annualized rate.
368,283
Population
+2.29%
Annual growth
438
People / sq mi
$145,737
Median Income
$674,000
Median Home Value
Douglas County covers 841 sq mi of land at 438.0 people per square mile.
About Douglas County, CO
What sets Douglas County apart is money: median household income runs $145,737, above the US median of $78,538. With 368,283 residents, Douglas County is a county in Colorado. That makes it one of the ten largest counties in Colorado in the country, at #6 by population.
Income is a real outlier — the median household pulls in $145,737, putting Douglas County near the top of US counties. Hardship is rare relative to US counties: a poverty rate of just 2.1%, below the national 12.4%. Home prices are steep, with the typical property valued at $674,000, with typical rent around $2,095.
Degree attainment is near the top of the range for US counties: 60.9% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Working from home is common here: 27.4% of workers do so, above the national 14.0%, and the average commute runs about 27 minutes each way.
Taken together, the income and housing figures place Douglas County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Douglas County Population History (2010-2024)
The county of Douglas County had a population of 287,011 in 2010 and 393,995 in 2024, a 37.3% growth over 14 years. The peak was 393,995 in 2024. Average annual growth rate: 2.29%.
393,995
Population (2024)
287,011
Population (2010)
393,995
Peak (2024)
2.29%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 287,011 |
| 2011 | 292,626 |
| 2012 | 298,826 |
| 2013 | 306,407 |
| 2014 | 314,783 |
| 2015 | 322,333 |
| 2016 | 328,680 |
| 2017 | 336,347 |
| 2018 | 343,780 |
| 2019 | 351,842 |
| 2020 | 360,327 |
| 2021 | 369,826 |
| 2022 | 376,462 |
| 2023 | 385,141 |
| 2024 | 393,995 |
Race & Ethnicity
| White | 81.7% |
| Black or African American | 1.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
39.5
Median Age
49.7%
Female
50.3%
Male
13.4%
Age 65+
Age Distribution
Children (under 15): 19.1% · Seniors (65+): 13.4%
Income & Poverty
| Median household income | $145,737+$53,267 vs state |
| Mean household income | $177,521 |
| Per-capita income | $66,810 |
| Poverty rate | 2.1%-3.8% vs state |
| Unemployment rate | 2.6% |
| Employment-to-population | 69.4% |
Top Industries by Employment
The largest employment sector in Douglas County is professional & business services, accounting for 20.0% of workers.
How residents commute
0.8%
Drive alone
1.2%
Carpool
64.4%
Public transit
27.4%
Work from home
27.2 min
Avg commute
Housing
$674,000+$171,800 vs state
Median home value
$2,095
Median rent
77.8%
Homeownership rate
140,542
Total housing units
96.9%
Occupied
3.1%
Vacant
22.2%
Renter-occupied
Social & access
96.3%
With health insurance
98.9%
With broadband internet
53.5%
Foreign-born
7.7%
Veterans (18+)
7.6%
With a disability
90.0%
Speak language other than English at home
Education
98.0%
High School+
60.9%
Bachelor's+
Largest cities in Colorado
Other counties in Colorado
Part of Colorado
Metro areas in Colorado
County rankings
Frequently Asked Questions
Douglas County, Colorado has a population of 368,283 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 6th-largest county in Colorado. Population density is 438 people per square mile.
The population of Douglas County has grown 37.3% since 2010 (287,011 → 393,995), a +2.29% annualized rate.
The median household income in Douglas County, Colorado is $145,737, with mean (average) household income of $177,521 and per-capita income of $66,810. 2.1% of residents live below the federal poverty level.
In Douglas County, the largest racial and ethnic groups are White (81.7%), Hispanic or Latino (1.6%), Black or African American (1.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Douglas County, Colorado is 39.5 years. Residents are 49.7% female and 50.3% male.
The median home value in Douglas County is $674,000 and median monthly rent is $2,095. 77.8% of occupied housing units are owner-occupied. The county has 140,542 total housing units, 3.1% of which are vacant.
The largest employment sector in Douglas County, Colorado is professional, scientific, and management services, employing 20.0% of workers. The unemployment rate is 2.6%.
Denver is among the largest cities associated with Douglas County, Colorado, with a population of 713,734.
Douglas County, CO Climate
Douglas County, CO has an average annual temperature of 8.2°C (47°F) and receives about 439 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.2°C
Avg Temp
439
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 28° | 11 mm |
| February | 0° / 31° | 14 mm |
| March | 3° / 37° | 36 mm |
| April | 7° / 44° | 42 mm |
| May | 12° / 53° | 62 mm |
| June | 17° / 62° | 52 mm |
| July | 20° / 68° | 62 mm |
| August | 19° / 66° | 57 mm |
| September | 15° / 58° | 35 mm |
| October | 9° / 48° | 28 mm |
| November | 2° / 36° | 23 mm |
| December | -1° / 29° | 17 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Douglas County, CO
The most comfortable months to visit Douglas County, CO are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -11°C low). May is usually the wettest month.
Where to stay near Douglas County
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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.