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Contra Costa County, California Population 2021
Contra Costa County, California's estimated population is 1,159,540 with a growth rate of 0.26% in the past year according to the most recent United States census data. Contra Costa County, California is the 10th largest county inCalifornia. The 2010 Population was 1,052,540 and has seen a growth of 10.17% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 1,159,540 | 3,010 | 0.26% |
| 2020 | 1,156,530 | 3,000 | 0.26% |
| 2019 | 1,153,530 | 3,010 | 0.26% |
| 2018 | 1,150,520 | 4,980 | 0.43% |
| 2017 | 1,145,540 | 8,270 | 0.73% |
| 2016 | 1,137,270 | 12,870 | 1.14% |
| 2015 | 1,124,400 | 15,520 | 1.40% |
| 2014 | 1,108,880 | 15,480 | 1.42% |
| 2013 | 1,093,400 | 15,850 | 1.47% |
| 2012 | 1,077,550 | 12,110 | 1.14% |
| 2011 | 1,065,440 | 12,900 | 1.23% |
| 2010 | 1,052,540 | 248,808 | 30.96% |
| 1990 | 803,732 | 147,352 | 22.45% |
| 1980 | 656,380 | 97,991 | 17.55% |
| 1970 | 558,389 | 149,359 | 36.52% |
| 1960 | 409,030 | 110,046 | 36.81% |
| 1950 | 298,984 | 198,534 | 197.64% |
| 1940 | 100,450 | 21,842 | 27.79% |
| 1930 | 78,608 | 24,719 | 45.87% |
| 1920 | 53,889 | 22,215 | 70.14% |
| 1910 | 31,674 | 13,628 | 75.52% |
| 1900 | 18,046 | 4,531 | 33.53% |
| 1890 | 13,515 | 990 | 7.90% |
| 1880 | 12,525 | 4,064 | 48.03% |
| 1870 | 8,461 | 3,133 | 58.80% |
| 1860 | 5,328 | 0.00% |
2021 Growth Rate
0.26% (3,010)
County Website
State
County Seat
Lat./Long.
2010 Population
1,052,540
Growth Since 2010
10.17% (107,000)
| Race | Population | Percentage |
|---|---|---|
| White | 637,904 | 55.85% |
| Asian | 190,983 | 16.72% |
| Some Other Race | 124,629 | 10.91% |
| Black or African American | 99,642 | 8.72% |
| Two or More Races | 77,956 | 6.82% |
| Native Hawaiian and Other Pacific Islander | 5,631 | 0.49% |
| American Indian and Alaska Native | 5,506 | 0.48% |
Contra Costa County, California Population Pyramid $2021
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| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 394,769 | 2.87 | 65.9 |
| Married | 217,370 | 3.45 | 77.1 |
| Non Family | 109,963 | 1.32 | 54.4 |
| Female | 48,256 | 3.52 | 47.5 |
| Male | 19,180 | 3.55 | 52 |
3.35
Average Family Size
2.87
Average Household Size
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 44,393 | 5.64% |
| 9th to 12th Grade | 38,528 | 4.89% |
| High School Graduate | 135,825 | 17.25% |
| Some College | 168,811 | 21.45% |
| Associates Degree | 66,223 | 8.41% |
| Bachelors Degree | 206,622 | 26.25% |
| Graduate Degree | 126,776 | 16.11% |
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Contra Costa County, California Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 382,807 | 370,462 | 195,792 |
| Hispanic | 168,367 | 118,026 | 28,817 |
| Asian | 139,449 | 126,853 | 79,328 |
| Other Race | 72,541 | 46,597 | 8,219 |
| Black | 67,308 | 61,883 | 18,236 |
| 2+ Races | 34,805 | 31,680 | 12,638 |
| Native American | 3,867 | 3,065 | 684 |
| Islander | 3,665 | 3,012 | 660 |
The highest rate of high school graduation is among white people with a rate of 96.78%.
The highest rate of bachelors degrees is among asian people with a rate of 56.89%.
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$54,396
Average Earnings
$64,594
Average Male
$45,951
Average Female
Contra Costa County, California Language by Age
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Contra Costa County, California Language
64.24% of Contra Costa County, California residents speak only English, while 35.76% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 18.32% of the population.
Contra Costa County, California Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| Hispanic | 289,643 | 37,524 | 12.96% |
| White | 497,062 | 26,560 | 5.34% |
| Other | 123,357 | 20,177 | 16.36% |
| Black | 98,077 | 16,065 | 16.38% |
| Asian | 190,045 | 11,744 | 6.18% |
| Multiple | 77,147 | 8,713 | 11.29% |
| Native | 5,415 | 437 | 8.07% |
| Islander | 5,557 | 281 | 5.06% |
8.70%
Overall Poverty Rate
7.92%
Male Poverty Rate
9.46%
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 16.38% below the poverty level.
The race least likely to be in poverty in Contra Costa County, California is Islander, with 5.06% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.57%. Among those working part-time, it was 10.22%, and for those that did not work, the poverty rate was 15.04%.
Contra Costa County, California Marital Status
Marriage Rates
51.8%
Overall Marriage Rate
54.2%
Male Marriage Rate
49.6%
Female Marriage Rate
Contra Costa County, California Married by Age and Sex
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Contra Costa County, California Marriage
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.
Contra Costa County, California Marital Status by Race
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| Name | Veterans | % of Total |
|---|---|---|
| White | 34,328 | 6.72% |
| Black | 5,782 | 7.50% |
| Hispanic | 4,753 | 2.37% |
| Asian | 3,379 | 2.21% |
| 2+ Races | 1,943 | 4.43% |
| Other Race | 1,103 | 1.26% |
| Native American | 224 | 5.12% |
| Islander | 209 | 4.87% |
Contra Costa County, California Veterans by Education
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4.34%
Veteran Poverty Rate
30.01%
Veteran Disability Rate
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64.8%
Labor Force Participation
61.3%
Employment Rate
5.3%
Unemployment Rate
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Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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55.33%
Born in Contra Costa County, California
74.60%
Native Born
25.40%
Foreign Born
11.52%
Non Citizen
13.89%
Naturalized
Place of Birth
74.60% of Contra Costa County, California residents were born in the United States, with 55.33% having been born in California. 11.52% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990