Boulder County's estimated 2026 population is 333,948 with a growth rate of 0.55% 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 13.18% 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 (80.65%)
Two or more races (10.55%)
Asian (4.72%)
Other race (2.9%)
Black or African American (0.84%)
Native American (0.28%)
Native Hawaiian or Pacific Islander (0.06%)
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
