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52 datasets

REV 2.0 Eligible and Ineligible Census Tracts

Published by: California Energy Commission
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Census tracts are designated as urban, rural center, or rural through SB 1000 analysis. These designations are being used for the REV 2.0 and Communit...

California US Congressional Districts Map 2020

Published by: California Citizens Redistricting Commission
Last updated: Monday, March 24, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Final approved map by the 2020 California Citizens Redistricting Commission for California's United States Congressional Districts; the authoritativ...

California State Assembly Districts Map 2020

Published by: California Citizens Redistricting Commission
Last updated: Monday, March 24, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Final approved map by the 2020 California Citizens Redistricting Commission for the California State Assembly; the authoritative and official delineat...

California State Senate Districts Map 2020

Published by: California Citizens Redistricting Commission
Last updated: Monday, March 24, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Final approved map by the 2020 California Citizens Redistricting Commission for the California State Senate; the authoritative and official delineatio...

CalHHS Data De-Identification Guidelines Reference Dataset

Published by: California Health and Human Services Agency
Last updated: Monday, April 6, 2026
File types: CSV, ZIP

These datasets are part of the California Health and Human Services Agency (CalHHS) Data De-Identification Guidelines (DDG) in the "State and County P...

California Urban Area Delineations

Published by: California Department of Finance
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The Census Bureau released revised delineations for urban areas on December 29, 2022. The new criteria (contained in this Federal Register Notice) is ...

CA State Senate Districts and Membership 2025-2030

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

This is the last boundary change until the next redistricting following the 2030 Census. All of the districts now reflect the 2021 Citizens Redistrict...

SB 1000 Populations

Published by: California Energy Commission
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Definitions:Urban: Contiguous urban census tracts with a population of 50,000 or greater. Urban census tracts are tracts where at least 10 percent of ...

Medical Service Study Areas

Published by: Department of Health Care Access and Information
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This is the current Medical Service Study Area. California Medical Service Study Areas are created by the California Department of Health Care Access ...

Medical Service Study Area Data Dictionary

Published by: Department of Health Care Access and Information
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Field Name Data Type Description Statefp Number US Census Bureau unique identifier of the state Countyfp Number US Census...