Explore our list of freely available nationwide GIS maps and datasets.
https://hub.arcgis.com/search
https://earthexplorer.usgs.gov/
https://www.census.gov/programs-surveys/geography.html
https://datagateway.nrcs.usda.gov/GDGOrder.aspx
https://sedac.ciesin.columbia.edu/data/sets/browse
https://www.usgs.gov/the-national-map-data-delivery
Explore our list of freely available statewide GIS maps and datasets.
https://clearinghouse.isgs.illinois.edu/
https://gis.chicagopolice.org/
https://hub-cookcountyil.opendata.arcgis.com/
https://maps.cookcountyil.gov/cookviewer/mapviewer.html
https://www.dupageco.org/gis/
https://www.countyofkane.org/Pages/Maps.aspx
https://maps.co.kendall.il.us/portal/home/
https://maps.lakecountyil.gov/mapsonline/
https://www.mchenrycountyil.gov/county-government/departments-a-i/geographic-information-system-gis/interactive-maps
https://www.willcountyillinois.com/County-Offices/Administration/GIS-Division
https://agis.wingis.org/
Do you know a source for free GIS data? Please let us know!
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