The Contra Costa County Board of Supervisors adopted the 2000 supervisorial redistricting ordinance on August 7, 2001. The new supervisorial boundaries became effective on Seprember 7, 2001.

The Contra Costa County Supervisorial Districts Map illustrates the supervisorial makeup of Contra Costa County.

 Map Information
If you have any questions regarding the County's redistricting process please call Linda Moulton at (925) 335-1238 or send an e-mail to This e-mail address is being protected from spambots. You need JavaScript enabled to view it .