Checked
County dataMaps & Geospatial
LA County Boundary
Published by County of Los Angeles · Updated 02/05/2026
- Last updated
- 02/05/2026
- First published 02/20/2020
- Update frequency
- Not listed
- Formats
- 5
- CSV, GeoJSON, Shapefile
- Coverage
- Los Angeles County, California
- County in California
About this dataset
County of Los Angeles boundary for use in web maps and applications, specifically those maintained by the LA County EOC GIS Unit.
The official County Boundary from the eGIS Data Repository was "un-merged" and attributes were altered, as follows:
- TYPE was originally land and may now be mainland or island.
- NAME was originally Los Angeles County and may now be Los Angeles County, Santa Catalina Island, or San Clemente Island.
The polygons were then "re-merged" based on the NAME field. As a result, definition queries may be applied, as needed.
Files and access
Links open the official government source
- CSV downloaddata.lacounty.govCSV
- GeoJSONdata.lacounty.govGeoJSON
- Shapefiledata.lacounty.govShapefile
- KMLdata.lacounty.govKML
- ArcGIS REST serviceservices.arcgis.comArcGIS REST
API endpoint: https://services.arcgis.com/RmCCgQtiZLDCtblq/arcgis/rest/services/LA_County_Boundary/FeatureServer
Links open outside websites we do not control.
Details
- Publisher
- Los Angeles County, California
- Department
- County of Los Angeles
- Listed on
- LA County Open Data
- Platform
- ArcGIS Hub site
- State
- California
- License
- custom
- Views
- 15,658,468
- Keywords
- Los Angeles County, Boundary
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Frequently asked questions
- Who publishes LA County Boundary?
- County of Los Angeles, part of Los Angeles County, California, publishes this dataset on LA County Open Data.
- How often is it updated?
- The publisher does not list a schedule. The last update was on 02/05/2026.
- How do I download it?
- It is available as CSV, GeoJSON, Shapefile, KML. Use the links in Files and access, which open the official government source.
Source: LA County Open Data · Last updated 10/21/2026 · Listing only; the data stays with the publisher