6th most populous of 64
With 393,995 residents in 2024, Douglas County ranks 6th by population among Colorado's 64 counties and is home to 6.6% of the state's residents.

Douglas County has the highest median household income in Colorado ($149,594) and the lowest poverty rate (3.8%).
Douglas County is home to 393,995 people (2024 estimate) on 841 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 393,995 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 285,465 | 2010 · U.S. Census Bureau |
| Population, 2000 | 180,121 | July 1, 2000 · Census intercensal |
| Change since 2000 | +118.7% | 2000–2024 · Census |
| International migration | +1,859 | 2024 · Census Vintage 2024 |
| Domestic migration | +5,161 | 2024 · Census Vintage 2024 |
| Birth rate | 9.8 per 1,000 | 2024 · calculated |
| Death rate | 5.2 per 1,000 | 2024 · calculated |
| Population rank in Colorado | 6th of 64 | 2024 · calculated |
| Per capita personal income | $107,204 | BEA, 2024 · official |
| Gross domestic product | $31.2 billion | BEA, current dollars, 2024 · official |
| Median household income | $149,594 | ACS 2020–2024 5-year · official |
| Poverty rate | 3.8% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 62.0% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 8.4% | ACS 2020–2024 5-year · official |
| Median home value | $713,600 | ACS 2020–2024 5-year · official |
| Median gross rent | $2,193/month | ACS 2020–2024 5-year · official |
| Median age | 39.6 years | ACS 2020–2024 5-year · official |
| Households | 139,960 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 77.4% | ACS 2020–2024 5-year · official |
Comparable indicators for Douglas County, Colorado and the United States.
| Indicator | County | Colorado | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +10.1% | +3.2% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 9.8 | 10.5 | 10.6 | 2024 |
| Death rate (per 1,000) | 5.2 | 7.6 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 17.8 | 6.5 | 8.2 | 2024 |
| Population density (/mi²) | 468.5 | 57.5 | 96.3 | 2024 |
| Per capita personal income | $107,204 | $83,055 | $73,204 | BEA, 2024 |
| Median household income | $149,594 | $95,470 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 3.8% | 9.4% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 62.0% | 45.7% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 8.4% | 9.8% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $713,600 | $539,400 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $2,193/month | $1,761/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 39.6 years | 37.7 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 77.4% | 66.2% | 65.2% | ACS 2020–2024 5-year |
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With 393,995 residents in 2024, Douglas County ranks 6th by population among Colorado's 64 counties and is home to 6.6% of the state's residents.
Its population went from 180,121 in 2000 to 393,995 in 2024, a change of +118.7%, compared with +37.7% for Colorado as a whole.
In the year to July 2024 the county recorded 3,880 births and 2,060 deaths, so births outnumbered deaths by 1,820.
Annual Census estimates since 2000 put the county's highest population in 2024, at 393,995.
Douglas County has about 468.5 residents per square mile of land, ranking 5th of 64 counties; Colorado averages 57.5.
With a median household income of $149,594 (ACS 2020–2024 5-year), the county ranks 1st of 64 Colorado counties; the state median is $95,470.
Its economy produced $31.2 billion of GDP in 2024 (BEA), 7th largest among 64 Colorado counties.
Real GDP grew 3.0% in 2024, adjusted for inflation (BEA, chained 2017 dollars).