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  1. Veterans Day Ceremony 2025

    Veterans Day Ceremony 2025

    Join the Contra Costa County Board of Supervisors in honoring Veterans and their families at the Annual Veterans Day Ceremony on Tuesday, Nov. 4, 2025

  2. Community Warning System

    Register for CWS Alerts

    The Community Warning System (CWS) is Contra Costa County’s all-hazard public warning notification system. CWS alerts you when a potential life- or health-threatening hazard requires immediate action.

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County information

  1. News & Updates

    We want to ensure you have all the news & announcements

  1. Board of Supervisors Meeting Update 450x450

    Update on Board of Supervisors Meeting

    Posted on October 16, 2025

    The meeting will be accessible in person, via television, and live streaming to all members of the p... Read on...
  2. Community Impact Fund Survey

    Community Impact Fund

    Posted on October 16, 2025

    Thank you for sharing your voice through our Community Impact Fund Survey. Your feedback has been in... Read more...
  3. 2025 Veterans Day Ceremony

    Remembering Our Heroes: November 4, 2025

    Posted on September 18, 2025

    As we mark 80 years since WWII, we remember our heroes. We remember the Tuskegee Airmen, Rosie the R... Read more...
  4. FOCUS Fall Cover 2025

    Contra Costa FOCUS Newsletter

    Posted on October 14, 2025

    The Fall 2025 edition of the Contra Costa FOCUS is here! Discover how County employees step up as di... Read more...
  5. Government Speak Podcast Logo

    Government Speak: A Contra Costa County Podcast

    Posted on August 27, 2025

    Contra Costa County’s Office of Communications & Media is excited to share the latest episode of... Read more...
  6. Secured Property Tax Bills

    Secured Property Tax Bills Are on Their Way

    Posted on September 30, 2025

    The 2025–2026 Secured Property Tax Bills are being mailed out. The Contra Costa County Treasurer–Tax... Read more...
  7. Measure X Innovation Fund logo

    Contra Costa County Innovation Fund

    Posted on April 15, 2025

    Thank you, Contra Costa County, for fueling positive change through the Innovation Fund and your con... Read more...
  8. Contra Costa County Seal

    County Awarded State Funds for Delta Recovery Center

    Posted on September 23, 2025

    Contra Costa County has been awarded $43.7 million in state funds to establish the Delta Recovery Ce... Read more...
  9. Contra Costa Television Survey

    Contra Costa Television Survey

    Posted on June 20, 2025

    Hey Contra Costa! Contra Costa Television (CCTV) wants to serve YOU better — and they need your inpu... Read more...
  10. Ready Contra Costa

    Ready Contra Costa/ Listos Contra Costa

    Posted on September 5, 2023

    Preparing before, during, and after extreme weather conditions is essential. Make a family communica... Read more...
  11. Grant Colfax news flash

    Board of Supervisors Appoints New Contra Costa Health Director

    Posted on August 12, 2025

    The Board of Supervisors appointed Dr. Grant Colfax as Director of Contra Costa Health, effective Au... Read more...
  12. Bohren appointment

    Board of Supervisors Appoints Joanne Bohren as Auditor-Controller

    Posted on August 11, 2025

    The Board of Supervisors has appointed Joanne Bohren as Auditor-Controller, effective Monday, Aug. 1... Read more...
  13. CCSealColor_1 png file

    Contra Costa County Stands with Our Immigrant Communities

    Posted on June 12, 2025

    Contra Costa County stands with our immigrant communities. We know recent federal immigration action... Read more...
  14. Contra Costa County Seal

    County Assessor Delivers 2025–2026 Assessment Roll

    Posted on July 1, 2025

    Contra Costa County Assessor Gus Kramer is pleased to announce the official completion and delivery ... Read more...
  15. Contra Costa County District 5 Supervisor Federal Glover website

    Board of Supervisors Statement on the Passing of Former Supervisor Federal D. Glover

    Posted on May 18, 2025

    We are deeply saddened to learn today of the passing of former Supervisor Federal Glover, who served... Read more...
  16. CCSealColor_1 png file

    Contra Costa County Responds to Recent Executive Orders

    Posted on January 24, 2025

    Amid recent changes and concerns about federal immigration policies, Contra Costa County wants to re... Read more...
  17. Contra Costa County Seal

    Wondering about your Supplemental Tax Bill?

    Posted on April 22, 2025

    As of July 1, 1983, California law mandates property reassessment after a change in ownership or new... Read more...
  18. Inside Public Works Episode 5

    Watch Episode 5 of "Inside Public Works"

    Posted on February 6, 2025

    The Contra Costa County Public Works Department is excited to announce the premiere of the fifth epi... Read more...
  19. EBT card-450x450

    New EBT Card Security & Technology Upgrade

    Posted on February 24, 2025

    For added security and ease of use, your EBT card is receiving an upgrade and here is a list of FAQs... Read more
  20. Contra Costa County Seal

    Contra Costa County Secures Federal Funding to Advance Clean Energy Initiatives

    Posted on December 2, 2024

    Contra Costa County was awarded $356,510 in federal funding through the U.S. Department of Energy’s ... View Media Release (PDF)
  21. County Administration Building B

    County's New Administration Building Wins Prestigious Certifications and Green Building Award

    Posted on December 13, 2024

    Contra Costa County’s new Administration Building in Martinez has achieved historic recognition as t... View Media Release (PDF)
View All News
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Contra Costa

  1. Event Calendar

    Mark your calendar, we have an event for everyone

View all calendar events

  1. Oct 21
  2. Board of Supervisors Meeting

    Board of Supervisors MeetingRead On
  1. Nov 3
  2. Zoning Administrator Meeting

    Zoning Administrator MeetingRead On
  1. Nov 4
  2. Board of Supervisors Meeting

    Board of Supervisors MeetingRead On
  1. Nov 12
  2. County Planning Commission Meeting

    County Planning Commission MeetingRead On
  1. Nov 18
  2. Board of Supervisors Meeting

    Board of Supervisors MeetingRead On
/Calendar.aspx

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  1. Contra Costa County CA Homepage

  1. 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.

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