The mission of the Geographic Information Systems (GIS) program is to employ geospatial technology to cost-effectively improve the delivery of services and the quality of decision-making for the City of Chicago
The GIS team
Includess police stations, fire stations, schools, clinics and many other facilities as well as political boundaries, transit routes, street closures, TIF districts, liquor licenses and other data of general interest.
Illinois House and Senate districts
U.S. Congressional districts
Population, housing, social and economic data from the U.S. Census Bureau.
More than 250 data sets of GIS and geospatial data are available on Chicago’s Data Portal where they are organized under the Topic "gis": http://data.cityofchicago.org/browse?tags=gis
Before making a FOIA (Freedom of Information Act) request, please check the data portal (https://data.cityofchicago.org/) to see if the data is already available. If not, email