Join us for Contra Costa County’s 5th Annual Summer Block Party from 4 to 7 p.m. on Tuesday, June 6, at 2900 Salvio St. in Concord. For more information, please call the County’s Clerk-Recorder-Elections Department at 925-335-7805 or visit https://www.contracosta.ca.gov/7625/Contra-Costa-County-Spring-Block-Party
Para obtener más información, llame al Departamento de Elecciones del Registro Civil del Condado al 925-335-7805 o visite https://www.contracosta.ca.gov/9854/Vecinal-De-Primavera.
Contra Costa County Communities
(19 Cities and 36 unincorporated communities)
Population as of the 2020 Census
Households as of 2021
American Community Survey
Contact Us: Public Information Contacts Media Inquiries Contact Webmaster
County Administration Building:
1025 Escobar Street, Martinez, CA 94553
1st Floor: Clerk of the Board
2nd Floor: Human Resources
3rd Floor: County Counsel
4th Floor: County Administration
For all other County departments and offices, see their web pages.