Source: Fortune 500 2017[1] This is a list of companies in the Chicago metropolitan area.
The Chicago metropolitan area – also known as "Chicagoland" – is the metropolitan area associated with the city of Chicago, Illinois, and its suburbs.
[2] With an estimated population of 9.4 million people,[3] it is the third largest metropolitan area in the United States[4] and the region most connected to the city through geographic, social, economic, and cultural ties.
There are other large corporations with an established presence in Chicago and/or its suburbs (but whose corporate headquarters are located elsewhere), including: