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The 100 Largest Companies In Illinois For 2024 - Zippia
If you live in Illinois and you’re looking for a job, you have come to the right place.
Because, sure, you can google things like ‘biggest companies in Illinois’ and get a fairly long list of companies with a lot of employees, or perhaps that have the biggest names — but here, we bring you the companies with the most current employees that are actually headquartered in Illinois.
Below, we’ll give you a complete list of Illinois’s 100 largest companies, but first, here’s a look at the top 10:
Allegiance Properties comes in at the top, with more current employees than any other company in the state. We’ll get to specifics in a moment; first, here’s a look at our methodology.
How we identified the biggest companies in Illinois
Here at Zippia we have developed a database of over 250,000 companies that spans the entire country.
For this report, we looked at the companies headquartered in Illinois with at least 100 employees. That left us with 3,000 companies.
We then ranked each company from most to least current employees to determine the biggest companies in Illinois.
As it turns out, Allegiance Properties looks to the be the biggest company in Illinois clocking in with 561,720 employees.
Now, check out how the 100 biggest companies in Illinois ranked.
Detailed List Of The 100 Biggest Companies In Illinois
Chris Kolmar is a co-founder of Zippia and the editor-in-chief of the Zippia career advice blog. He has hired over 50 people in his career, been hired five times, and wants to help you land your next job.
His research has been featured on the New York Times, Thrillist, VOX, The Atlantic, and a host of local news.
More recently, he's been quoted on USA Today, BusinessInsider, and CNBC.
