Counties

California
Explore California’s 58 counties, learn about county government structure, roles, services, and history, and discover how counties impact local communities.

Explore California's 58 Counties

Discover California’s 58 counties with our interactive map! Click on a county to learn about incorporation, government, CSAC caucus, and access county websites.

How to Use the Map

Click on a county to reveal: 

  • Incorporation Date: Discover when the county was established. 

  • Form of Government: Learn how the county is governed—whether it operates under a general law or charter system. 

  • CSAC Caucus: See which of CSAC’s caucuses the county belongs to (Rural, Urban, or Suburban). 

  • County Website: Click the link to visit the county’s official website for more details. 

Whether you’re researching governance, exploring regional diversity, or simply curious about California’s counties, this interactive map is your gateway to a wealth of information. 

​Understanding County Government in California

Explore the structure and functions of county government in California, including the key roles, services, and policies that impact local communities and residents.
Learn More ​View California County Structure

Overview of County Roles

Counties in California are essential to local governance, overseeing a wide range of services such as law enforcement, public health, education, and infrastructure. From managing social services and land use to ensuring environmental policies are followed, counties provide key support that impacts daily life.
Learn More County Roles

County History​

California's counties have evolved since the state gained its official status in 1850. The first 27 counties were created shortly after statehood, with more counties formed as the population and territory expanded. Today, California has 58 counties, each with its own unique role in providing services and governance to local communities.