2010 U.S. Census Mail Return Rates and Demographics by Tract for Cook County. According to the US Census, tracts that fell below the 73% threshold were designated as containing "hard-to-count" (HTC) populations.
The data supplies two primary groups of information: 1) details on the mail return rates for each census tract in Cook County 2) Estimated demographic characteristics for each census tract in Cook County.
For detailed information on the data please go to the following link:
https://datacatalog.cookcountyil.gov/stories/s/hza3-k7kt

Municipalities around Cook County have opened cooling centers for area residents as temperatures start to rise. Residents who need to seek shelter should contact the center first to verify it is open. This dataset will be no longer updated on May 1, 2019. Please refer to this link for future updates: https://datacatalog.cookcountyil.gov/dataset/Cook-County-Cooling-Centers-Map/dnn9-esge

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

Political Townships in Cook County

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

Unit School Taxing Districts in Cook County

Sanitary Taxing Districts within Cook County

Park Taxing Districts within Cook County

Metropolitan Water Reclamation Taxing Districts in Cook County

Library Taxing Districts in Cook County