Population By Race and Ethnicity in Boulder County, CO in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 325,438 population of Boulder County, Colorado comprised of 44,977 people who identified as Hispanic (13.82%), and 280,461 people who identified as Non-Hispanic (86.18%).

Race: The White Alone population was the largest racial group in Boulder County, Colorado with a population of 293,461 (90.17%); Asian Alone population was the second largest racial group with a population of 16,071 (4.94%); and Two Or More Races was the third largest racial group with a population of 9,108 (2.8%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Boulder County, Colorado in 2018, with a population of 252,838 (77.69%); the second largest ethnic group was White Alone - Hispanic with a population of 40,623 (12.48%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 15,702 (4.83%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Boulder, Colorado.

You can find similar information for other Colorado counties, and for Colorado.

See this for other years:
Hispanics and Non Hispanics in Boulder County, CO in 2018
Total Population:
Race in Boulder County, CO in 2018
Total Population:
Ethnicity in Boulder County, CO in 2018
Total Population:
Population By Race in Boulder , CO in 2018
Race Population Percentage
Black or African American Alone 3,704 1.14%
White Alone 293,461 90.17%
American Indian and Alaska Native Alone 2,856 0.88%
Asian Alone 16,071 4.94%
Native Hawaiian And Pacific Islander Alone 238 0.07%
Two Or More Races 9,108 2.8%
Population By Ethnicity in Boulder , CO in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 678 0.21%
White Alone - Hispanic 40,623 12.48%
American Indian and Alaska Native Alone - Hispanic 1,626 0.5%
Asian Alone - Hispanic 369 0.11%
Native Hawaiian And Pacific Islander Alone - Hispanic 70 0.02%
Two Or More Races - Hispanic 1,611 0.5%
Black or African American Alone - Non Hispanic 3,026 0.93%
White Alone - Non Hispanic 252,838 77.69%
American Indian and Alaska Native Alone - Non Hispanic 1,230 0.38%
Asian Alone - Non Hispanic 15,702 4.83%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 168 0.05%
Two Or More Races - Non Hispanic 7,497 2.3%