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GIS Data

Imagery and geospatial data sources that can be used in GIS and mapping projects.

GIS Data Guide

Our GIS Data Guide includes suggested starting points for finding geospatial data for GIS projects. 

Please reach out to our GIS Librarian if you need help finding geospatial data for your research. Contact information is on the left side of the page, beneath the navigation menu.

Geospatial Data Portals: Global Coverage

The following resources are just a few of the many sites that include geospatial data. Additional resources are listed on subsequent pages of this guide.


Data Portals: United States


Data Portals: Massachusetts