Boulder County's estimated 2025 population is 325,815 with a growth rate of -0.16% 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 10.42% since that time.
Data after 2023 is projected based on recent change
The racial composition of Boulder County includes 80.65% White, 4.72% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Asian
Other race
Black or African American
Native American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 264,800 | 80.65% |
| Two or more races | 34,639 | 10.55% |
| Asian | 15,487 | 4.72% |
| Other race | 9,508 | 2.9% |
| Black or African American | 2,745 | 0.84% |
| Native American | 935 | 0.28% |
| Native Hawaiian or Pacific Islander | 203 | 0.06% |
Married
Widowed
Divorced
Separated
Never Married
Boulder County's average per capita income is $64,758. Household income levels show a median of $102,772. The poverty rate stands at 11.45%.
Name | Median | Mean |
|---|---|---|
| Married Families | $159,846 | $203,679 |
| Families | $142,534 | $186,195 |
| Households | $102,772 | $144,869 |
| Non Families | $59,153 | $89,782 |
Average Income
Median Household Income
Poverty Rate
