Douglas County's 2026 population is estimated at 405,741, reflecting a 1.59% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Douglas County is the 6th largest county in Colorado. The 2010 population was 287,011 and has grown 41.37% since 2010.
Overall: 39.6 years
Female: 40.2 years
Male: 38.9 years
There are 288,852 adults, (52,473 of whom are seniors) in Douglas County.
Female: 187,268 (49.7%)
Male: 189,882 (50.3%)
The racial composition of Douglas County includes 79.9% White, 5.8% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 301,359 | 79.9% |
| Two or more races | 36,950 | 9.8% |
| Asian | 21,889 | 5.8% |
| Other race | 9,535 | 2.53% |
| Black or African American | 5,465 | 1.45% |
| Native American | 1,653 | 0.44% |
| Native Hawaiian or Pacific Islander | 299 | 0.08% |
Douglas County 's average per capita income is $84,818. Household income levels show a median of $149,594. The poverty rate stands at 3.77%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $183,609 | $221,479 |
| Families | $171,592 | $207,792 |
| Households | $149,594 | $183,544 |
| Non Families | $83,498 | $104,999 |
Average Income
Median Household Income
Poverty Rate