Cook County Key Facts
Cook County Key Facts
The Problem Cook County is the largest county in Illinois, with a population of 5,294,664 (41% of Illinois’s 12,901,563 residents). However, between April 2000 and July 2008, its population declined at a rate of -1.5%, while the rest of Illinois grew by 3.9%. Why is everyone leaving? Highest Taxes. Within Chicago and Cook County, the...