Cook County GIS Department map of municipal boundaries in Cook Cook County, Illinois in PDF format. Includes major streets, waterbodies, rail, Cook County Forest Preserve, and municipal boundaries.

Department of GIS sponsored Municipal Incorporation Inventory (MII) project. The following agencies participated in this project: The Cook County Recorder of Deeds, Cook County Emergency Telephone System Board, Cook County Circuit Court, Archives Department, Cook County Department of Transportation and Highways, the Cook County Clerk’s Office and the Illinois State Archives Office of the Secretary of State.

The data is not guaranteed to be accurate, correct, or complete. Information provided should not be used as a substitute for legal, business, tax, or other professional advice. The recipient/viewer should contact appropriate regulating agencies to determine accuracy or suitability of the data for a particular use.

TIF District boundaries. TIF districts receive money from property taxes by utilizing increases in the value of properties located in the TIF. There is no tax rate for TIF districts. Instead, TIFs receive money based on tax rates generated by other districts’ tax levies. Money is allocated to the TIF based on the composite tax rate for properties in the TIF and the incremental value of properties in that TIF (when compared to values when the TIF was established.)

The feature class Right-of-Way indicates tax exempt rights-of-way digitized from recorded plats.

The feature class LOT contains lot polygons as shown on the tax map.

The Parcel 2015 feature contains tax parcel polygons for the 2015 property tax assessment at the County. This feature reflects tax parcel polygons as they existed from 1/1/2015 through 12/31/2015. Each parcel is uniquely identified with a Property Index Number (PIN).

This data includes 2009 precincts used for all elections 2010 thru 2011. The purpose of the feature class is to describe and locate election precincts in Cook County, Illinois for general use by the public and business requirements of the Cook County Election Department, the Clerk's Office, and the Illinois Board of Elections.

This data includes 2011 precincts used for all elections 2012 thru 2015. The purpose of the feature class is to describe and locate election precincts in Cook County, Illinois for general use by the public and business requirements of the Cook County Election Department, the Clerk's Office, and the Illinois Board of Elections.

This Address Point feature class contains one point for every address in Survey Township 33 (Township 35 N, Range 15 E; see ccgisdata - Survey Township (Area) 2014).

This Address Point feature class contains one point for every address in Survey Township 32 (Township 35 N, Range 14 E; see ccgisdata - Survey Township (Area) 2014).