Boulder County, CO — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
328,317
Male
165,677
50.5%
Female
162,640
49.5%
Median Age
37.5 yrs
Avg Household Size
2.3
Foreign Born
10.1%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher42.6%
High School or Higher50.0%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
3.6%
Disability
0.0%
Non-English Home
3.0%
Married
39.4%
Boulder County, CO has a population of 328,317 according to 2023 Census Bureau estimates. The median age is 37.5 years. The largest racial or ethnic group is White at 80.7% of the population. 42.6% of residents hold a bachelor's degree or higher. 10.1% of residents are foreign-born.