On April 2nd, the Cook County GIS Department and Cook County Clerk’s Office added 2013 Parcel data to the Open Data Portal. This data reflects tax parcel polygons as they existed from 1/1/2013 through 12/31/2013. Each parcel is uniquely identified with a Property Index Number (PIN).
Previously, 2012 Parcel data was added to the Open Data Portal in March 2014.
