Local Wiki
Contra Costa County
Official County Record
Official source, last checked Sep 16, 2026- Board of Supervisors meets
- Tuesdays (not every week) at approximately 9:00 AM.
- Meeting location
- Administration Building, 1025 Escobar Street, Martinez, CA.
- County Clerk, Recorder and Registrar of Voters
- Kristin Braun Connelly · 555 Escobar Street, P.O. Box 271, Martinez, CA 94553 · (925) 335-7800 (FAX (925) 335-7838) · voter.services@vote.cccounty.us
- Agendas posted at
- https://contra-costa.legistar.com/Calendar.aspx
- County Administrator and Clerk of the Board
- Monica Nino · County Administrator and Clerk of the Board · 1025 Escobar Street, Martinez, CA 94553 · (925) 655-2075
Other Local Government Here
Local government is layered — cities, counties, school districts, and special districts are separate, overlapping governments. Most residents are covered by several at once, and more may exist here than are listed below.
Other Known Local Governments Here
These local governments — special-purpose districts, and smaller incorporated cities and towns — are known to exist in this area, but haven’t been individually researched yet, so there’s no meeting info or contacts on file. Listed here as a starting point if you want to look into one yourself; where we could confirm an official website, the name links there. More may exist here than are listed.
Cities (6)
- Clayton (official website, opens in a new tab)
- El Cerrito (official website, opens in a new tab)
- Hercules (official website, opens in a new tab)
- Lafayette (official website, opens in a new tab)
- Orinda (official website, opens in a new tab)
- Pinole (official website, opens in a new tab)
Source: U.S. Census Bureau Population Estimates Program, 2024 · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Towns (1)
Source: U.S. Census Bureau Population Estimates Program, 2024 · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
School districts (19)
- Acalanes Union High
- Antioch Unified
- Brentwood Union Elementary
- Byron Union Elementary
- Canyon Elementary
- Contra Costa County Office of Education
- John Swett Unified
- Knightsen Elementary
- Lafayette Elementary
- Liberty Union High
- Martinez Unified
- Moraga Elementary
- Mt. Diablo Unified
- Oakley Union Elementary
- Orinda Union Elementary
- Pittsburg Unified
- San Ramon Valley Unified
- Walnut Creek Elementary
- West Contra Costa Unified
Source: NCES Common Core of Data (via Urban Institute), 2022 directory — regular school districts only
Special districts · Cemetery (2)
- Alamo Lafayette Cemetery District (official website, opens in a new tab)
- Byron Brentwood Knightsen Union Cemetery District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Education (3)
- Contra Costa County Schools Insurance Group (official website, opens in a new tab)
- Contra Costa County Schools Self Insurance Group
- Contra Costa Solano Cos School District Self Ins Authority
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Fire Protection (4)
- Kensington Fire Protection District
- Moraga-Orinda Fire District
- Rodeo-Hercules Fire Prot District
- San Ramon Valley Fire Protection District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Flood Control (2)
- Knightsen Town Community Services District
- Reclamation District 2137
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Gas Supply (1)
- School Project for Utility Rate Reduction (Spurr)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Health (1)
- Contra Costa Mosquito and Vector Control District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Highways (3)
- East Contra Costa Regional Fee and Financing Authority
- East County Transportation Improvement Authority
- State Route 4 Bypass Authority (official website, opens in a new tab)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Irrigation (2)
- Byron Bethany Irrigation District (official website, opens in a new tab)
- East Contra Costa Irrigation District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Multi-Purpose (6)
- Bethel Island Municipal Improvement District (official website, opens in a new tab)
- Contra Costa Transportation Authority (official website, opens in a new tab)
- Crockett Community Services District (official website, opens in a new tab)
- Diablo Community Services District
- Town of Discovery Bay (official website, opens in a new tab)
- West County Wastewater District (official website, opens in a new tab)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Natural Resources (1)
- East Contra Costa County Habitat Conservancy
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Other Single Purpose (3)
- Contra Costa County Joint Powers Authority for Self-Insurance
- Municipal Pooling Authority (official website, opens in a new tab)
- Pleasant Hill-Martinez Joint Facilities Agency
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Parks & Recreation (3)
- Ambrose Recreation and Park District (official website, opens in a new tab)
- Green Valley Park and Recreation District (official website, opens in a new tab)
- Pleasant Hill Recreation and Park District (official website, opens in a new tab)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Police Protection (1)
- Kensington Police Protection and Commission Services District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Public Transit (5)
- Central Contra Costa Transit Authority
- Eastern Contra Costa Transit Authority
- Pleasant Hill Bart Station Leasing Authority
- W Contra Costa Transp Adv Commission (Wcctac)
- Western Contra Costa Transit Authority
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Reclamation (11)
- Delta Farms Reclamation District 2024
- Reclamation District 2025
- Reclamation District 2026
- Reclamation District 2059
- Reclamation District 2065
- Reclamation District 2090
- Reclamation District 2117
- Reclamation District 2122
- Reclamation District 799 (official website, opens in a new tab)
- Reclamation District 800 (official website, opens in a new tab)
- Reclamation District 830
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Sewer (7)
- Byron Sanitary District
- Central Contra Costa Sanitary District (official website, opens in a new tab)
- Ironhouse Sanitary District
- Mount View Sanitary District (official website, opens in a new tab)
- Rodeo Sanitary District (official website, opens in a new tab)
- Stege Sanitary District
- West County Agency
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Soil & Water Conservation (1)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Solid Waste (2)
- Central Contra Costa Solid Waste Authority
- West Contra Costa Integrated Waste Management Authority (official website, opens in a new tab)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Toll Highways (1)
- Delta Ferry Authority
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Water Supply (3)
- Castle Rock County Water District
- Contra Costa Water District (official website, opens in a new tab)
- Diablo Water District (official website, opens in a new tab)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026