Contra Costa County, CA
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in Contra Costa County research summary. HomeSnacks has been researching the quality of life in Contra Costa County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Contra Costa County:
The population in Contra Costa County is 1,161,458.
The median home value in Contra Costa County is $772,396.
The median income in Contra Costa County is $125,727.
The median rent in Contra Costa County is $2,322.
The unemployment rate in Contra Costa County is 5.9%.
The poverty rate in Contra Costa County is 8.3%.
The average high in Contra Costa County is 72.9° and there are 48.8 inches of rainfall annually.
The average high in Contra Costa County is 72.9°.
There are 94.67 nice days each year.
Expect an average of 48.8 inches of rain each year with 0.0 inches of snow.
There is an average of 7:11 hours of sun each day in Contra Costa County.
| Stat | Contra Costa County |
|---|---|
| Mean High | 72.9 |
| Nice Days | 94.67 |
| Rainfall | 48.8 |
| Snowfall | 0.0 |
| Sunny Hours | 7:11 |
The current population in Contra Costa County is 1,161,458. The population has increased 1.7% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 1,161,643 | 1.2% |
| 2022 | 1,147,788 | 0.5% |
| 2021 | 1,142,251 | - |
Contra Costa County is 50.8% female with 590,288 female residents.
Contra Costa County is 49.2% male with 571,170 male residents.
| Gender | Contra Costa County | CA | USA |
|---|---|---|---|
| Female | 50.8% | 50.0% | 50.5% |
| Male | 49.2% | 50.0% | 49.5% |
Contra Costa County is:
39.3% White with 455,961 White residents.
8.2% African American with 94,864 African American residents.
0.2% American Indian with 1,806 American Indian residents.
18.3% Asian with 212,373 Asian residents.
0.4% Hawaiian with 5,158 Hawaiian residents.
0.7% Other with 7,601 Other residents.
5.8% Two Or More with 66,896 Two Or More residents.
27.3% Hispanic with 316,799 Hispanic residents.
| Race | Contra Costa County | CA | USA |
|---|---|---|---|
| White | 39.3% | 34.6% | 58.2% |
| African American | 8.2% | 5.3% | 12.0% |
| American Indian | 0.2% | 0.3% | 0.5% |
| Asian | 18.3% | 15.1% | 5.7% |
| Hawaiian | 0.4% | 0.3% | 0.2% |
| Other | 0.7% | 0.5% | 0.5% |
| Two Or More | 5.8% | 4.1% | 3.9% |
| Hispanic | 27.3% | 39.8% | 19.0% |
3.3% of households in Contra Costa County earn Less than $10,000.
2.2% of households in Contra Costa County earn $10,000 to $14,999.
3.3% of households in Contra Costa County earn $15,000 to $24,999.
3.8% of households in Contra Costa County earn $25,000 to $34,999.
6.3% of households in Contra Costa County earn $35,000 to $49,999.
10.7% of households in Contra Costa County earn $50,000 to $74,999.
10.3% of households in Contra Costa County earn $75,000 to $99,999.
17.9% of households in Contra Costa County earn $100,000 to $149,999.
13.6% of households in Contra Costa County earn $150,000 to $199,999.
28.5% of households in Contra Costa County earn $200,000 or more.
| Income | Contra Costa County | CA | USA |
|---|---|---|---|
| Less than $10,000 | 3.3% | 4.4% | 4.9% |
| $10,000 to $14,999 | 2.2% | 3.0% | 3.6% |
| $15,000 to $24,999 | 3.3% | 5.2% | 6.6% |
| $25,000 to $34,999 | 3.8% | 5.5% | 6.8% |
| $35,000 to $49,999 | 6.3% | 8.4% | 10.4% |
| $50,000 to $74,999 | 10.7% | 13.3% | 15.7% |
| $75,000 to $99,999 | 10.3% | 11.8% | 12.7% |
| $100,000 to $149,999 | 17.9% | 17.9% | 17.4% |
| $150,000 to $199,999 | 13.6% | 11.1% | 9.3% |
| $200,000 or more | 28.5% | 19.4% | 12.6% |
6.0% of adults in Contra Costa County completed < 9th grade.
5.0% of adults in Contra Costa County completed 9-12th grade.
18.0% of adults in Contra Costa County completed high school / ged.
19.0% of adults in Contra Costa County completed some college.
8.0% of adults in Contra Costa County completed associate's degree.
27.0% of adults in Contra Costa County completed bachelor's degree.
12.0% of adults in Contra Costa County completed master's degree.
3.0% of adults in Contra Costa County completed professional degree.
2.0% of adults in Contra Costa County completed doctorate degree.
| Education | Contra Costa County | CA | USA |
|---|---|---|---|
| < 9th Grade | 6% | 7% | 5% |
| 9-12th Grade | 5% | 7% | 6% |
| High School / GED | 18% | 20% | 26% |
| Some College | 19% | 20% | 19% |
| Associate's Degree | 8% | 8% | 9% |
| Bachelor's Degree | 27% | 22% | 21% |
| Master's Degree | 12% | 10% | 10% |
| Professional Degree | 3% | 3% | 2% |
| Doctorate Degree | 2% | 2% | 2% |
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