U.S. Census: Contra Costa County population grew by 8 percent in last decade

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Census takers set to visit nonresponding households
Photo credit: U.S. Census

By Kathy Chouteau

Contra Costa County’s population grew from 1,049,025 in 2010 to 1,165,927 in 2020, an increase of 116,902, or 8.08 percent, according to newly released U.S. Census data.

The Census data will help determine Contra Costa County’s new supervisorial districts during its redistricting process, which happens once every ten years.

District 1 represented by Supervisor John Gioia — which includes Richmond, San Pablo, El Cerrito and part of Pinole along with unincorporated communities from as south as Kensington to as north as Bayview and also El Sobrante and East Richmond Heights — grew in population from 203,437 in 2010 to 224,726 in 2020.

District 2 represented by Sup. Candace Andersen — which includes Orinda, Lafayette, Moraga, Danville and San Ramon — experienced the greatest population growth in the County, with a rise from 218,917 in 2010 to 243,565 in 2020, signifying an increase of 24,648 (4.45 percent).

District 3 represented by Sup. Diane Burgis — which includes Antioch, Oakley and Brentwood — grew in population from 203,711 to 239,825 in 2020, an increase of 36,114 (2.85 percent).

District 4 represented by Sup. Karen Mitchoff — which includes Pleasant Hill, Concord, Walnut Creek and Clayton — grew in population from 219,216 in 2010 to 229,348 in 2020, an increase of 10,132 (1.65 percent).

District 5 represented by Sup. Federal Glover — which includes Martinez, Pittsburg and Hercules — increased in population from 203,744 in 2010 to 228,463 in 2020, an increase of 24,719 (2.03 percent).

In terms of population by race/ethnicity, countywide there was a 27 percent growth in the Latino population, 18.4 percent growth in the Asian population, 8.4 percent growth in the Black population, 39.1 percent growth in the White population and 7.1 percent growth in other race/ethnicities.

The supervisorial district breakdowns in population increases in terms of race/ethnicity include:

District 1: 40.9 percent (Latino), 16.8 percent (Asian), 14 percent (Black), 21.7 percent (White) and 6.6 percent (Other);

District 2: 8.5 percent (Latino), 28 percent (Asian), 1.6 percent (Black), 55.1 percent (White) and 6.7 percent (Other);

District 3: 29.5 percent (Latino), 13.6 percent (Asian), 11.4 percent (Black), 37.9 percent (White) and 7.6 percent (Other);

District 4: 22.4 (Latino), 15.2 percent (Asian), 3 percent (Blacks), 51.7 percent (Whites) and 7.7 percent (Other); and District 5: 35 percent (Latino), 17.9 percent (Asian), 12.4 percent (Black), 27.5 percent (White) and 7.1 percent (Other).

“The release of the local data from the 2020 Census forms the basis for the redistricting process in Contra Costa County,” said Sup. Burgis, who thanked the Complete Count committee members, community partners, community-based organizations and volunteers who worked on the County’s Census count.

More info about redistricting and how to provide input can be found at www.CoCoRedistricting.org and www.contracosta.ca.gov.