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

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 580,027 population of Jefferson County, Colorado comprised of 89,829 people who identified as Hispanic (15.49%), and 490,198 people who identified as Non-Hispanic (84.51%).

Race: The White Alone population was the largest racial group in Jefferson County, Colorado with a population of 531,579 (91.65%); Asian Alone population was the second largest racial group with a population of 17,605 (3.04%); and Two Or More Races was the third largest racial group with a population of 14,763 (2.55%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Jefferson County, Colorado in 2018, with a population of 452,303 (77.98%); the second largest ethnic group was White Alone - Hispanic with a population of 79,276 (13.67%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 16,739 (2.89%).

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

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

See this for other years:
Hispanics and Non Hispanics in Jefferson County, CO in 2018
Total Population:
Race in Jefferson County, CO in 2018
Total Population:
Ethnicity in Jefferson County, CO in 2018
Total Population:
Population By Race in Jefferson , CO in 2018
Race Population Percentage
Black or African American Alone 8,334 1.44%
White Alone 531,579 91.65%
American Indian and Alaska Native Alone 7,033 1.21%
Asian Alone 17,605 3.04%
Native Hawaiian And Pacific Islander Alone 713 0.12%
Two Or More Races 14,763 2.55%
Population By Ethnicity in Jefferson , CO in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 1,563 0.27%
White Alone - Hispanic 79,276 13.67%
American Indian and Alaska Native Alone - Hispanic 4,088 0.71%
Asian Alone - Hispanic 866 0.15%
Native Hawaiian And Pacific Islander Alone - Hispanic 197 0.03%
Two Or More Races - Hispanic 3,839 0.66%
Black or African American Alone - Non Hispanic 6,771 1.17%
White Alone - Non Hispanic 452,303 77.98%
American Indian and Alaska Native Alone - Non Hispanic 2,945 0.51%
Asian Alone - Non Hispanic 16,739 2.89%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 516 0.09%
Two Or More Races - Non Hispanic 10,924 1.88%