Contra Costa County, California's estimated 2024 population is 1,153,031 with a growth rate of -0.17% in the past year according to the most recent United States census data. Contra Costa County, California is the 9th largest county in California. The 2010 population was 1,052,516 and has seen a growth of 9.55% since that time.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 1,143,061 | -1,994 | -0.17% |
| 2028 | 1,145,055 | -1,994 | -0.17% |
| 2027 | 1,147,049 | -1,994 | -0.17% |
| 2026 | 1,149,043 | -1,994 | -0.17% |
| 2025 | 1,151,037 | -1,994 | -0.17% |
| 2024 | 1,153,031 | -1,994 | -0.17% |
| 2023 | 1,155,025 | -1,994 | -0.17% |
| 2022 | 1,157,019 | -6,922 | -0.59% |
| 2021 | 1,163,941 | -2,128 | -0.18% |
| 2020 | 1,166,069 | 13,186 | 1.14% |
| 2019 | 1,152,883 | 2,043 | 0.18% |
| 2018 | 1,150,840 | 5,217 | 0.46% |
| 2017 | 1,145,623 | 8,364 | 0.74% |
| 2016 | 1,137,259 | 13,111 | 1.17% |
| 2015 | 1,124,148 | 15,483 | 1.4% |
| 2014 | 1,108,665 | 15,412 | 1.41% |
| 2013 | 1,093,253 | 15,814 | 1.47% |
| 2012 | 1,077,439 | 12,078 | 1.13% |
| 2011 | 1,065,361 | 12,845 | 1.22% |
| 2010 | 1,052,516 | 0 | 0% |
| 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 | 7.9% |
| 1880 | 12,525 | 4,064 | 48.03% |
| 1870 | 8,461 | 3,133 | 58.8% |
| 1860 | 5,328 | -1,137,733 | -99.53% |
White
Asian
Other race
Two or more races
Black or African American
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 408,537 | 2.82 | 67.2 | 32.8 |
| Married | 221,482 | 3.43 | 78.5 | 21.5 |
| Non Family | 116,687 | 1.31 | 56.4 | 43.6 |
| Female | 48,984 | 3.41 | 47.9 | 52.1 |
| Male | 21,384 | 3.38 | 52.9 | 47.1 |
3.31
Average Family Size
2.82
Average Household Size
67.2%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among white people with a rate of 96.95%.
The highest rate of bachelors degrees is among asian people with a rate of 60.43%.
All
Male
Female
$66,882
Average Earnings
$77,757
Average Male
$55,566
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
63.72% of Contra Costa County, California residents speak only English, while 36.28% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 18.36% of the population.
rate
8.26%
Overall Poverty Rate
7.64%
Male Poverty Rate
8.86%
Female Poverty Rate
The race most likely to be in poverty in Contra Costa County, California is Other, with 14.2% below the poverty level.
The race least likely to be in poverty in Contra Costa County, California is White, with 5.54% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.46%. Among those working part-time, it was 8.85%, and for those that did not work, the poverty rate was 15.17%.
Married
Widowed
Divorced
Separated
NeverMarried
51.5%
Overall Marriage Rate
53.8%
Male Marriage Rate
49.2%
Female Marriage Rate
male
female
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 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.46%
Veteran Poverty Rate
31.51%
Veteran Disability Rate
LaborForceParticipation
65.1%
Labor Force Participation
61.2%
Employment Rate
5.8%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
56.22%
Born in Contra Costa County, California
74.59%
Native Born
25.41%
Foreign Born
10.68%
Non Citizen
14.73%
Naturalized
74.59% of Contra Costa County, California residents were born in the United States, with 56.22% having been born in California. 10.68% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.