Attachment D - 2020 Census Data.xlsx

This document is Attachment D containing 2020 Census Data for the State of Illinois. The data represents population figures across all 102 Illinois counties, as compiled from the U.S. Census Bureau's 2020 decennial census. The state total population is 12,812,508 residents.

The census data is organized by county with individual population counts for each jurisdiction. Notable population centers include Cook County with 5,275,541 residents (comprising 2,746,388 in the City of Chicago and 2,529,153 in Cook County minus Chicago), DuPage County with 932,877 residents, Will County with 696,355 residents, and Lake County with 714,342 residents. The remaining 98 counties range from Pope County with the lowest population of 3,763 residents to McLean County with 170,954 residents. This census data serves as the baseline demographic information for state and local resource allocation, representation, and planning purposes.