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California / Contra Costa County

Get Contra Costa County, CA Demographics

Who knew Contra Costa County demographics could be so sexy? Check out Census 2010 data and current American Community Survey data for Contra Costa County, CA. Feast your eyes on statuesque tables, curvacous pie charts and titillating trend lines. We dare you to call Contra Costa County demographic data boring!

Quick Facts

Population 2010 Census 1,049,025 #9 in the state
Median Income 2010 for Households $78,385
Poverty Rate 9.0%
Median Age 38.5 years
Largest Racial or Ethnic Group White
Sources: Census 2010 SF1 & 2006-2010 American Community Survey 5 year estimates

Contra Costa County Demographics Summary

population icon With 1,049,025 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 930,450 people and Kern County with 839,631 people are right behind you.

income icon In 2010, the median household income of Contra Costa County residents was $78,385. Contra Costa County households made slightly more than Ventura County households ($75,348) and Placer County households ($74,447) However, 9.0% of Contra Costa County residents live in poverty.

age icon The median age for Contra Costa County residents is 38.5 years young.

race icon The largest Contra Costa County racial/ethinic groups are White (47.8%) followed by Hispanic (24.4%) and Asian (14.2%).

Contra Costa County Race / Ethnic Groups

Non-Hispanic Population
White 500,923
Black 93,604
American Indian 2,984
Asian 148,881
Pacific Islander 4,382
Some Other Race 3,122
Two or More Races 39,569
Hispanic 255,560
Source: Census 2010 SF1 Table P9 Hispanic or Latino or Not Hispanic or Latino by Race
  • White
  • Black
  • Indian
  • Asian
  • Pacific Islander
  • Some Other Race
  • Two or More Races
  • Hispanic

3 Largest Contra Costa County Race / Ethnic Groups

  • The Contra Costa County White population is 500,923 persons or 47.8%.
  • The Contra Costa County Hispanic population is 255,560 persons or 24.4%.
  • The Contra Costa County Asian population is 148,881 persons or 14.2%.

Note: the US Census Bureau defines race and ethnicity differently from the way most people think about race and ethnicity. In a nutshell, a person's origin (or what used to be called ethnicity) is either Hispanic or Non-Hispanic. And a person's race can be white, black or African American, American Indian or Alaska Native, Asian, Native Hawaiian or Other Pacific Islander, Some Other Race or Two or More Races. For more details about race and origin data, google "US Census Bureau race and origin Census 2010."


Contra Costa County Median Age

Fellas, you need to start eating your Wheaties™. Contra Costa County ladies have a higher median age.

Median Age 38.5 years
Median Age - Females 39.7 years
Median Age - Males 37.1 years
Source: Census 2010 SF1 Table P13 Median Age by Male/Female

Under 18 and Over 65 Age Breakdown

With 24.8% of the Contra Costa County population under 18, Contra Costa County has more spring chickens than a KFC ® at dinner time.

Persons Under 18 24.8%
Persons Over 65 12.4%
Everyone else 62.8
Source: Census 2010 SF1 Table P12 Male/Female by Age
  • Under 18
  • Over 65
  • Everyone else

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