Contra Costa County

Contra Costa County is a county in California, United States. The population in Contra Costa County was 1,156,966 in 2022. The median age in Contra Costa County was 39.9 in 2021. The median income in Contra Costa County was $46,590 in 2021. The unemployment rate in Contra Costa County was 4.5% in 2023. The percentage of people with obesity in Contra Costa County was 24.3% in 2021. The percentage of people who binge drink in Contra Costa County was 16.1% in 2021. The percentage of people who smoke in Contra Costa County was 9.6% in 2021.