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Contra Costa County Population

All Contra Costa County population data above are from the US Census Bureau.

Contra Costa County Demographics Summary

population icon Population

With 1,135,127 people, Contra Costa County is the 9th most populated county in the state of California out of 58 counties. But watch out, Contra Costa County, because Fresno County with 979,915 people and Kern County with 884,788 people are right behind you.

Contra Costa County 1,135,127
Fresno County 979,915
Kern County 884,788

race icon Race & Ethnicity

The largest Contra Costa County racial/ethnic groups are White (46.0%) followed by Hispanic (24.9%) and Asian (15.1%).

Top Race & Ethnicity Groups %
White 46.0%
Hispanic 24.9%
Asian 15.1%

income icon Median Income

In 2015, the median household income of Contra Costa County residents was $80,185. Contra Costa County households made slightly more than Orange County households ($76,509) and Ventura County households ($77,348) . However, 10.9% of Contra Costa County residents live in poverty.

Median Household Income
Contra Costa County $80,185
Orange County $76,509
Ventura County $77,348

age icon Median Age

The median age for Contra Costa County residents is 38.8 years young.

Median Age 38.8

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Starter Report Sample

The District of Columbia Starter Report, shown on the left, will give you a good idea of what to expect in a Starter Report. The Contra Costa County, CA report will have the same data, charts & graphs as this sample.

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