State of California Open Data
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29 datasets

California Counties

  • Published by: California Department of Education
  • Last updated: Saturday, November 15, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This layer contains the boundaries for California’s 58 counties. County features are derived from the US Census Bureau's 2023 TIGER/Line database and ...

BOE CityCounty

  • Published by: California Department of Tax and Fee Administration
  • Last updated: Saturday, November 15, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published ...

County Health Status Profiles

  • Published by: California Department of Public Health
  • Last updated: Saturday, November 15, 2025
  • File types: ZIP, CSV

County Health Status Profiles is an annually published report for the State of California by the California Department of Public Health in collaborati...

B-6, Comparison By County

  • Published by: California Franchise Tax Board
  • Last updated: Thursday, January 16, 2025
  • File types: CSV, PDF

This dataset contains personal income tax statistics for taxpayers by the county of residence based on tax returns. Population data comes from the Dep...

California County Boundaries and Identifiers

  • Published by: California Department of Technology
  • Last updated: Wednesday, October 1, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

Note: The schema changed in February 2025 - please see below. We will post a roadmap of upcoming changes, but service URLs and schema are now stable. ...

City and County Boundary Line Changes

  • Published by: California Department of Tax and Fee Administration
  • Last updated: Saturday, November 15, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API

This map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published ...

i03 DAU county cnty2018

  • Published by: California Department of Water Resources
  • Last updated: Saturday, November 15, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of California.The exi...

California County Boundaries and Identifiers with Coastal Buffers

  • Published by: California Department of Technology
  • Last updated: Wednesday, October 1, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

Note: The schema changed in February 2025 - please see below. We will post a roadmap of upcoming changes, but service URLs and schema are now stable. ...

Counties Raw Data for Fiscal Year 2016-17

  • Published by: California State Controller's Office
  • Last updated: Tuesday, November 11, 2025
  • File types:

43 sheets of data, each sheet representing a table from the database that stores the information. The order of these sheets is based on the sequence o...

Vocational Rehabilitation Consumers Served by Disability and County, SFY 2014-2023

  • Published by: California Department of Rehabilitation
  • Last updated: Monday, November 10, 2025
  • File types: CSV, ZIP

This dataset represents the statewide count of Department of Rehabilitation’s total number of consumers served in State Fiscal Years 2014 through 2023...

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