Illinois is a major corporate hub, housing the headquarters of numerous Fortune 500 companies across diverse sectors.
* **Food & Retail:** McDonald's (Chicago), Walgreens Boots Alliance (Deerfield), and Mondelez International (Chicago). * **Healthcare & Pharma:** Abbott Laboratories (Abbott Park) and AbbVie (North Chicago). * **Manufacturing & Heavy Industry:** John Deere (Moline) and Archer Daniels Midland (Chicago). * **Aviation & Transportation:** United Airlines (Chicago). * **Finance & Insurance:** State Farm (Bloomington) and Allstate (Northbrook).
