In 2022, Contra Costa County, CA had a population of 1.16M people with a median age of 40.1 and a median household income of $120,020. Between 2021 and 2022 the population of Contra Costa County, CA grew from 1.16M to 1.16M, a 0.0865% increase and its median household income grew from $110,455 to $120,020, a 8.66% increase.
The 5 largest ethnic groups in Contra Costa County, CA are White (Non-Hispanic) (40.6%), Asian (Non-Hispanic) (18%), Other (Hispanic) (12.2%), Black or African American (Non-Hispanic) (8.4%), and Two+ (Hispanic) (7.01%).
None of the households in Contra Costa County, CA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
89.3% of the residents in Contra Costa County, CA are U.S. citizens.
The largest universities in Contra Costa County, CA are Diablo Valley College (113634) (3,866 degrees awarded in 2022), Los Medanos College (2,167 degrees), and Contra Costa College (1,386 degrees).
In 2022, the median property value in Contra Costa County, CA was $787,300, and the homeownership rate was 67.2%.
Most people in Contra Costa County, CA drove alone to work, and the average commute time was 36.8 minutes. The average car ownership in Contra Costa County, CA was 2 cars per household.
Contra Costa County, CA borders Alameda County, CA, Marin County, CA, Sacramento County, CA, San Francisco County, CA, San Joaquin County, CA, Solano County, CA, and Sonoma County, CA.