Boulder County's estimated 2026 population is 327,635 with a growth rate of -0.28% in the past year according to the most recent United States census data. Boulder County is the 9th largest county in Colorado. The 2010 population was 295,056 and has seen a growth of 11.04% since that time.
Data after 2023 is projected based on recent change
Overall: 37.7 years
Female: 39 years
Male: 36.6 years
There are 271,246 adults, (53,942 of whom are seniors) in Boulder County.
Female: 163,111 (49.6%)
Male: 165,850 (50.4%)
The racial composition of Boulder County includes 77.78% White, 4.72% Asian, 3.27% other race, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 255,881 | 77.78% |
| Two or more races | 42,689 | 12.98% |
| Asian | 15,523 | 4.72% |
| Other race | 10,773 | 3.27% |
| Black or African American | 2,770 | 0.84% |
| Native American | 1,121 | 0.34% |
| Native Hawaiian or Pacific Islander | 204 | 0.06% |
Boulder County's average per capita income is $67,063. Household income levels show a median of $103,994. The poverty rate stands at 11.16%.
Name | Median | Mean |
|---|---|---|
| Married Families | $169,310 | $214,648 |
| Families | $147,203 | $193,674 |
| Households | $103,994 | $148,847 |
| Non Families | $60,783 | $90,566 |
Average Income
Median Household Income
Poverty Rate
