Jury Pool Profile
Contra Costa County, California
- County seat
- Martinez
- Judicial district
- Contra Costa County Superior Court
- Population (July 2025 estimate)
- 1,170,070
- Census PEP. The five-year ACS survey average is 1,165,012.
At a glance
Contra Costa County is a 1,170,070-person venue. The county population is 41% White and 8% Black (Census race-alone categories). 28% identify as Hispanic or Latino of any race. Median household income is $126,787, $26,657 above the CA state median of $100,130; 45.2% of residents 25 and over hold a bachelor's degree or higher. 37.5% of residents 5 and older speak a language other than English at home, most commonly Spanish, then other Indo-European languages (4.7%), a group the Census does not break out. The largest employment sector is Education & health services, at 31.9% of covered employment, average pay $77,775/year. Trailing-12-month unemployment is 4.64%, below the 5.36% state average. The county carried the Democratic presidential candidate in 2016, 2020, and 2024, taking 67% to 72% of the vote across the three.
- Population
- 1,165,012
- Median household income
- $127,229
- Unemployment
- 4.6%
Who sits on a jury?
<50% in any single race-alone group. White here: 41%; Black: 8%.
Contra Costa County has a population of 1,165,012, with a median age of 40.5. By Census race-alone categories, White residents make up 41.1%; Black residents 8.3%. Independently, 27.6% of residents identify as Hispanic or Latino of any race.
The median household earns $126,787; 45.2% of residents 25 and over hold a bachelor's degree or higher; 8.5% live below the federal poverty line.
Economic context
Largest sector in BLS QCEW, even counting every withheld job toward the other sectors: Education & health services, about 32% of covered jobs.
Education & health services is the largest employment sector at 31.9% of covered employment, followed by Trade, transportation & utilities at 17.5%. Trailing-12-month unemployment is 4.64%, below the California state average.
Political composition
Democratic candidate carried this county in 2016, 2020, and 2024 (avg winning share: 69%). 'Strongly' threshold: ≥60% avg.
Contra Costa County was carried by the Democratic candidate in the 2016, 2020, and 2024 cycles, with 67.3% in 2024, 71.6% in 2020, 68.9% in 2016.
Languages, households, faith & health
Family households are 71% of all households (thresholds: ≥70% = 'family-dominant'; 50–70% = 'family-majority'; <50% = 'singles/nonfamily-majority'). 37.5% of residents 5 and older speak a language other than English at home (threshold for 'linguistically diverse' is ≥10%).
37.5% of residents 5 years and older speak a language other than English at home. The most common are Spanish, Chinese, Tagalog. Veterans account for 4.2% of the adult civilian population (37,905 individuals).