Population By Race and Ethnicity in Contra Costa County, CA in 2023

Updated on July 31, 2024.

Based on the US Census Vintage data estimates, in 2023, the 1,155,025 population of Contra Costa County, California comprised of 321,243 people who identified as Hispanic (27.81%), and 833,782 people who identified as Non-Hispanic (72.19%).

Race: The White Alone population was the largest racial group in Contra Costa County, California with a population of 720,163 (62.35%); Asian Alone population was the second largest racial group with a population of 238,610 (20.66%); and Black or African American Alone was the third largest racial group with a population of 107,949 (9.35%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Contra Costa County, California in 2023, with a population of 446,805 (38.68%); the second largest ethnic group was White Alone - Hispanic with a population of 273,358 (23.67%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 230,023 (19.92%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Contra Costa, California.

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

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Hispanics and Non Hispanics in Contra Costa County, CA in 2023
Total Population:
Race in Contra Costa County, CA in 2023
Total Population:
Ethnicity in Contra Costa County, CA in 2023
Total Population:
Population By Race in Contra Costa , CA in 2023
Race Population Percentage
Black or African American Alone 107,949 9.35%
White Alone 720,163 62.35%
American Indian and Alaska Native Alone 12,936 1.12%
Asian Alone 238,610 20.66%
Native Hawaiian And Pacific Islander Alone 7,422 0.64%
Two Or More Races 67,945 5.88%
Population By Ethnicity in Contra Costa , CA in 2023
Ethnicity Population Percentage
Black or African American Alone - Hispanic 10,271 0.89%
White Alone - Hispanic 273,358 23.67%
American Indian and Alaska Native Alone - Hispanic 9,885 0.86%
Asian Alone - Hispanic 8,587 0.74%
Native Hawaiian And Pacific Islander Alone - Hispanic 1,680 0.14%
Two Or More Races - Hispanic 17,462 1.51%
Black or African American Alone - Non Hispanic 97,678 8.46%
White Alone - Non Hispanic 446,805 38.68%
American Indian and Alaska Native Alone - Non Hispanic 3,051 0.26%
Asian Alone - Non Hispanic 230,023 19.92%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 5,742 0.5%
Two Or More Races - Non Hispanic 50,483 4.37%