Contra Costa to hold Community Redistricting Workshops for Supervisor districts October 23-28

Contra Costa County Board of Supervisors 2021 Redistricting Draft Map 1. Source: CCC Department of Conservation and Development

East County workshops Oct. 24, 26 & 28

By Susan Shiu, PIO, Office of Communications & Media, Contra Costa County

Contra Costa County’s Redistricting effort is a once-a-decade process of redrawing the boundaries for Supervisorial districts after the U.S. Census. As part of that process,

a series of Community Redistricting Workshops to be held in each region of the County will take place October 20 – 29, 2021. To register for mapping workshops and to learn more, visit

The county is also offering easy-to-use mapping tools for public input. Five proposed maps have been created for review by the public and Supervisors. See Redistricting Concept Maps 1-5.

Redistricting is the regular process of adjusting the lines of voting districts in response to accordance with population shifts within the County. Every ten years, after the decennial census, supervisorial districts must be redrawn so that each district is substantially equal in population. This process is important in ensuring that each Supervisor represents about the same number of people.

Redistricting is based on the U.S. Census data, which was released in legacy format on August 12, 2021.  The actual drawing of Supervisorial District Maps requires the official California State Adjusted Redistricting data, which was released September 20, 2021 and includes updated data to ensure that individuals in the prison population are counted by each jurisdiction.

“The Contra Costa County Board of Supervisors welcomes your engagement and input in this important process,” said Board Chair, Supervisor Diane Burgis. “We are committed to a robust Redistricting and public outreach process with public hearings, a dedicated website at, and public workshops.”

Workshop Schedule

Community Redistricting Workshop – District 2, San Ramon City Hall

October 23, 2021, 9:00 AM - 11:00 AM @ San Ramon City Hall, 7000 Bollinger Canyon Road. Hosted by Supervisor Candace Andersen

Community Redistricting Workshop – District 3 Zoom Workshop

October 24, 2021, 12:00 PM - 2:00 PM This workshop will be by zoom only. Hosted by Supervisor Diane Burgis

Community Redistricting Workshop – District 4, Pleasant Hill Community Center

October 25, 2021, 7:00 PM - 9:00 PM @ Pleasant Hill Community Center. Hosted by Supervisor Karen Mitchoff

Community Redistricting Workshop – East County Zoom Workshop

October 26, 2021, 7:00 PM - 9:00 PM This workshop will be by zoom only. Hosted by Supervisors Diane Burgis & Federal Glover

Community Redistricting Workshop – District 1, San Pablo City Hall

October 27, 2021, 6:30 PM - 8:30 PM @ San Pablo City Hall, 1000 Gateway Avenue, San Pablo 94806 Hosted by Supervisor John Gioia

Community Redistricting Workshop – District 5 Zoom Workshop

October 28, 2021, 7:00 PM - 9:00 PM This workshop will be by zoom only. Hosted by Supervisor Federal Glover

For more information about Redistricting and how to provide input, visit or the County website’s homepage at

Allen Payton contributed to this report.

the attachments to this post:

CCCBOS 2021 Redistricting Public Hearing Sched

CCCBOS 2021 Redistricting Draft Map 1

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