Spatial data is available in a variety of formats from numerous publishers including government, academic, and corporate bodies.
Use this guide to find authoritative data resources, tips for finding data, and information about data available at UChicago.
Look for these common file types and formats that work well with many GIS applications:
The free and open web is still one of the best places to find spatial data.
To find spatial data through a search engine:
Example: GIS data download Chicago