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Free General Data
Contains a variety of economic, climate, consumer, and geospatial data.
USGS National Atlas
Offers a collection of small-scale data sets on health, environmental, transportation, and agriculture topics.
Download data on any country in the word: administrative boundaries, roads, railroads, altitudes, land cover, population density.
GIS Data Depot
Includes a variety of data on different topics.
Natural Earth Data
Public domain, vector and raster data.
Libre Map Project
GIS data of all 50 states and boundaries.
Illinois Natural History Survey
Access environmental and historical data on Illinois.
Illinois State Water Survey
Contains GIS data, projects, and products related to the Illinois State Water Survey.
Illinois Geospatial Data Clearinghouse
Access Illinois GIS data sets and documentation (metadata) for ArcIMS Interactive Map Services, USGS digital topographic maps, aerial photography, orthoimagery, orthophotography, geology, land use, natural resources, and infrastructure. Illinois data sets and map data layers are available for download free of charge.
GIS Consultation at the Library
Contact the Scholarly Commons