Guides: Geography: Data Sources

GIS Data Sources

ESRI Open Data
Access to ESRI open GIS datasets. Requires an ArcGIS Online account.
Data.gov
Open repository of U.S. Government public data. Includes geospatial data.
California State Geoportal
GIS data for the State of California
Orange County GIS
GIS Open Data Portal for Orange County, California
Riverside County GIS
GIS data for Riverside County
List of GIS Data Sources (Wikipedia)
List of GIS data sources across the globe.