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Caltrans Districts

The District boundary definitions are primarily based on the county boundaries. 2010 Census TIGER/Line county data were used to create this district boundary layer. Following the Census data, for the coastal counties, new District data use three-mile offshore lines instead of the coastlines that the old Caltrans District data had been used.

Data files

Data title and descriptionAccess dataFile detailsLast updated

GeoJSON

DownloadGEOJSON
08/11/23

CSV

Download
CSV
08/11/23

KML

DownloadKML
08/11/23

Shapefile

DownloadZIP
08/11/23

Supporting files

Data title and descriptionAccess dataFile detailsLast updated

ArcGIS Hub Dataset

HTML
08/11/23

ArcGIS GeoService

ARCGIS GEOSERVICES REST API
08/11/23

API endpoint

Dataset Name

Use the query web API to retrieve data with a set of basic parameters. Copy the API endpoint you need to start.

Usage documentation