​Oak Brook is a village in DuPage County with a small portion in Cook County in Illinois.  The population was 7.942 as of July 1, 2019.  This suburb of Chicago has the headquarters of several companies and organizations including Ace Hardware, Blistex, Federal Signal, CenterPoint Properties, Sanford L.P., TreeHouse Foods, and Lions Clubs International.  It is the former corporate home of McDonald's and Ferrara Candy (now both moved to Chicago).  Mobility City of DuPage County recognizes the need for mobility equipment repair service, rentals and sales throughout the village of Oak Brook and beyond.  Mobility City has unsurpassed expertise with wheelchairs, mobility scooters, power chairs, lift chairs, and hospital beds.  Mobility City of DuPage County is in Lombard, Illinois, which is about 6.5 miles west of Oak Brook.  Call us at (331) 462-0144.