Geographic Information Systems (GIS)

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.

Geospatial Data

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": 

GIS Liability Statement and Disclaimer:

The data provided is a public resource of general information.  The City of Chicago makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the database information provided herein.  The reader should not rely on the data provided herein for any reason.  The City of Chicago explicitly disclaims any representation and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose.  The City of Chicago shall assume no liability for:

1. Any errors, omissions, or inaccuracies in the information provided regardless of how caused; or

2. Any decision made or action taken or not taken by reader in reliance upon any; information or data furnished hereunder.

Interactive Maps