Welcome to Cook County GIS

In December 2013, the Cook County Board of Commissioners passed an ordinance that allows Cook County GIS to post data that we previously charged for to be placed in our Open Data portal. Once there, the data will be free.

Our goal is post at a minimum 2 major datasets per month as well as post .pdf of maps in the Open Data portal. We have already started this process. Click here to see the newest GIS data.

Additionally Cook County GIS has started the development of a self-service solution that will allow the public to freely browse and download the large GIS datasets. We hope to make this solution public in the 2nd/3rd quarter of 2014.

However, if you require a custom data requests which require the time of our talented analysts, this service can be performed at a reasonable rate. To initiate a request please contact us at gisstore@cookcountyil.gov. We would like to review your needs in order to give you an accurate price.

If you have any questions or comments, click here to contact us.

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