Contra Costa County, California Population 2018

Contra Costa County, California's estimated population is 1,147,439 with a growth rate of 0.77% in the past year according to the most recent United States census data. Contra Costa County, California is the 9th largest county in California.

Year Population Growth Growth Rate
20171,123,678-23,761-2.07%
20171,147,4398,7940.77%
20161,138,64512,6181.12%
20151,126,02715,0561.36%
20141,110,97115,6611.43%
20131,095,31016,2171.50%
20121,079,09312,9111.21%
20111,066,18213,3831.27%
20101,052,799249,06730.99%
1990803,732147,35222.45%
1980656,38097,99117.55%
1970558,389149,35936.52%
1960409,030110,04636.81%
1950298,984198,534197.64%
1940100,45021,84227.79%
193078,60824,71945.87%
192053,88922,21570.14%
191031,67413,62875.52%
190018,0464,53133.53%
189013,5159907.90%
188012,5254,06448.03%
18708,4613,13358.80%
18605,3280.00%

Contra Costa County, California Population Growth

Population Data via

Population by Race

Race Population
White658,569
Asian180,072
Some Other Race102,876
Black or African American96,345
Two or More Races74,864
Native Hawaiian and Other Pacific Islander5,542
American Indian and Alaska Native5,410

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Contra Costa County, California Population Pyramid 2018

10,00020,00030,00040,000 Male Population10,00020,00030,00040,000 Female Population80757065605550454035302520151050

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Contra Costa County, California Median Age

39.2


Total

37.9


Male

40.5


Female

Contra Costa County, California Adults

There are 862,175 adults, (163,771 of whom are seniors) in Contra Costa County, California.

Contra Costa County, California Age Dependency

60.9

Age Dependency Ratio

23.4

Old Age Dependency Ratio

37.4

Child Dependency Ratio

Contra Costa County, California Sex Ratio

Female

575,003

51.17%

Male

548,675

48.83%

Contra Costa County, California Households and Families

Contra Costa County, California Renter vs Owner Occupied by Household Type

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Contra Costa County, California Household Types

Type Owner Renter
Married76.9%23.1%
All65.5%34.5%
Non Family54.7%45.3%
Male49.1%50.9%
Female46.2%53.8%

65.5%

Rate of Home Ownership

Contra Costa County, California Households by Type

Type Count Average Size Owned
All389,5972.8665.5
Married212,9243.4476.9
Non Family109,8681.3454.7
Female47,9763.4846.2
Male18,8293.5649.1

3.35

Average Family Size

2.86

Average Household Size

5.5%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

Contra Costa County, California Households

Contra Costa County, California Education

Contra Costa County, California Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade44,8895.85%
9th to 12th Grade38,8095.06%
High School Graduate137,21917.89%
Some College170,41322.21%
Associates Degree63,2978.25%
Bachelors Degree198,52125.88%
Graduate Degree113,98414.86%

Contra Costa County, California Educational Attainment by Race

Name Total High School Bachelors
White383,716370,092187,879
Hispanic161,111111,16826,301
Asian130,042117,97672,661
Black63,95258,06315,812
Other Race59,52838,8546,590
Multiple Races31,79529,12710,687
Native American3,7583,110712
Islander3,5192,796492

The highest rate of high school graduation is among white people with a rate of 96.45%.

The highest rate of bachelors degrees is among white people with a rate of 55.88%.

Contra Costa County, California Earnings by Educational Attainment

Name Average Male Female
Overall$50,763$60,271$41,820
Less Than High School$24,128$28,335$17,160
High School Grad$32,631$37,247$28,308
Some College$44,167$51,839$36,941
Bachelors Degree$71,129$88,773$56,912
Graduate Degree$93,748$121,142$73,756

$50,763

Average Earnings

$60,271

Average Male

$41,820

Average Female

Contra Costa County, California Language

Contra Costa County, California Language by Age

Contra Costa County, California Language

65.22% of Contra Costa County, California residents speak only English, while 34.78% speak other languages. The largest non-English language is Spanish, which is spoken by 17.96% of the population.

Contra Costa County, California Poverty

Contra Costa County, California Poverty by Race

Name Total In Poverty Poverty Rate
Hispanic281,54341,54514.76%
White500,57829,3465.86%
Black94,83717,85818.83%
Other101,68717,83017.53%
Asian179,28812,4596.95%
Multiple74,1979,56812.90%
Native5,33856410.57%
Islander5,3764899.10%

9.75%

Overall Poverty Rate

8.86%

Male Poverty Rate

10.60%

Female Poverty Rate

Poverty in Contra Costa County, California

The race most likely to be in poverty in Contra Costa County, California is Black, with 18.83% below the poverty level.

The race least likely to be in poverty in Contra Costa County, California is White, with 5.86% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.71%. Among those working part-time, it was 11.45%, and for those that did not work, the poverty rate was 16.17%.

Contra Costa County, California Poverty Rate by Education

Name Poverty
Less Than High School20.12%
High School12.09%
Some College7.76%
Bachelors or Greater3.48%

Contra Costa County, California Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed26.07%
Male Unemployed23.65%
Female Employed5.18%
Male Employed4.39%

Contra Costa County, California Income

Contra Costa County, California Income by Household Type

Name Median Mean
Households$88,456$120,800
Families$103,598$137,312
Married Families$121,826$157,171
Non Families$52,290$72,354

Contra Costa County, California Marital Status

Contra Costa County, California Marital Status

Marriage Rates

51.7%

Overall Marriage Rate

53.9%

Male Marriage Rate

49.7%

Female Marriage Rate

Contra Costa County, California Married by Age and Sex

Contra Costa County, California Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 35To44.

Contra Costa County, California Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Contra Costa County, California Veterans

Contra Costa County, California Veterans by War

49,218

Number of Veterans

45,719

Male Veterans

3,499

Female Veterans

Name Veterans
Vietnam17,700
First Gulf War7,507
Korea5,779
Second Gulf War5,269
World War II3,746

Contra Costa County, California Veterans by Age

Name Veterans
75+14,707
65 to 7413,529
35 to 5410,509
55 to 647,893
18 to 342,580

Contra Costa County, California Veterans by Race

Name Veterans % of Total
White36,2456.93%
Black5,6387.64%
Hispanic4,9102.55%
Asian3,6502.55%
2 or More1,8674.52%
Other1,3031.82%
Hawaiian3177.80%
Indian1984.52%

Contra Costa County, California Veterans by Education

4.65%

Veteran Poverty Rate

29.62%

Veteran Disability Rate

Contra Costa County, California Employment Status

Contra Costa County, California Employment by Age

64.5%

Labor Force Participation

60%

Employment Rate

6.9%

Unemployment Rate

Contra Costa County, California Employment by Race

Contra Costa County, California Employment by Education

Population of Cities in Contra Costa County, California

City 2010 Census 2016 Estimated Growth Growth Rate
Concord12215412872665725.38%
Antioch10274511089881537.94%
Richmond10364510981361685.95%
San Ramon714547563941855.86%
Pittsburg6325970679742011.73%
Walnut Creek641656912249577.73%
Brentwood5162460532890817.26%
Danville418494463127826.65%
Oakley3543240622519014.65%
Martinez360363825922236.17%
Pleasant Hill331143485317395.25%
San Pablo291343053614024.81%
Lafayette237942610323099.70%
El Cerrito235862540018147.69%
Hercules240702536012905.36%
Orinda177511947017199.68%
Pinole18330192939635.25%
Moraga160061741614108.81%
Clayton109181199210749.84%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990