Resources - Companies in the Chicago Area and Top 100 Digital Companies in Chicago

The following companies have headquarters within the Chicago city limits:
    Aon Corporation (ranked #298 on the 2010 Fortune 500 list)
    A.T. Kearney
    Bally Total Fitness
    Boeing
    CareerBuilder
    Chicago Board Options Exchange
    CME Group
    Chicago Stock Exchange
    Citadel LLC
    Classified Ventures
    Click & Mortar
    CNA Financial (an affiliate of Loews Corporation)
    Diamond Management & Technology Consultants
    Encyclopædia Britannica, Inc.
    Equity Office Properties Trust
    Exelon (ranked #134 on the 2010 Fortune 500 list)
    GATX Corporation
    General Growth Properties
    Groupon
    Hartmarx
    Hostway
    Hyatt Hotels
    Integrys Energy Group
    InterCall
    Jet Support Services, Inc.
    Jones Lang LaSalle
    Kerasotes Theatres
    Koval Distillery
    La Petite Academy
    Magnetar Capital
    Merisant
    Metal Management
    Midway Games
    MillerCoors
    Morningstar, Inc.
    Morton Salt
    National Stock Exchange
    Navigant Consulting, Inc.
    Navteq
    Northern Trust
    Old Republic International
    Orbitz
    Playboy Enterprises
    PTI Securities & Futures
    Quaker Oats Company, a unit of PepsiCo
    RR Donnelley (Ranked #240 on the 2010 Fortune 500 list)
    Ryerson, Inc.
    ShoreBank
    Skidmore, Owings and Merrill
    Smurfit-Stone Container (Ranked #374 on the 2010 Fortune 500 list)
    SSA Global Technologies
    SymphonyIRI Group
    Telephone and Data Systems Incorporated
    Tootsie Roll Industries
    TransUnion
    Tribune Company (Fortune 500)
    True Value
    UBid
    United Airlines (Corporate Offices) (Ranked #140 on the 2010 Fortune 500 list)
    Unitrin Inc (S&P 400 MidCap, S&P 1500 Super Comp)
    U.S. Cellular
    USG Corporation (Ranked #458 on the Fortune 500)
    Whittman-Hart
    Wilson Sporting Goods
    World Book Encyclopedia
    Wm. Wrigley Jr. Company

The following companies are based in Chicago's suburbs, greater metropolitan area:
    AAR Corporation (Wood Dale, Illinois)
    Abbott Laboratories (Abbott Park, Illinois) (Fortune 500)
    ACCO Brands (Lincolnshire, Illinois)
    Accuquote (Wheeling, Illinois)
    Ace Hardware (Oak Brook, Illinois)
    ACNielsen (Schaumburg, Illinois)
    Alberto-Culver (Melrose Park, Illinois)
    Allstate (Northbrook, Illinois) (Fortune 500)
    Andrew Corporation (Westchester, Illinois)
    Anixter International (Glenview, Illinois)
    Aquascape, Inc. (St. Charles, Illinois)
    Arthur J. Gallagher & Co. (Itasca, Illinois)
    Baxter International (Deerfield, Illinois) (Fortune 500)
    BFG Technologies (Lake Forest, Illinois)
    Blistex, Incorporated (Oak Brook, Illinois)
    Brunswick Corporation (Lake Forest, Illinois) (Fortune 500)
    Calamos Holdings LLC (Naperville, Illinois)
    Career Education Corporation (Hoffman Estates, Illinois)
    CDW (Vernon Hills, Illinois) (Ranked #376 on the Fortune 500)
    CF Industries (Deerfield, Illinois)
    Claire's (Hoffman Estates, Illinois)
    Colonial Ice Cream (St. Charles, Illinois)
    Corn Products International (Westchester, Illinois)
    Così (Deerfield, Illinois)
    Coskata, Inc. (Warrenville, Illinois)
    Crate and Barrel (Northbrook, Illinois)
    Culligan (Rosemont, Illinois)
    DeVry University (Oakbrook Terrace, Illinois)
    Discover Financial Services (Riverwoods, Illinois)(ranked #286 on the 2010 Fortune 500 list)
    Donlen Corporation (Northbrook, Illinois)
    Eby-Brown (Naperville, Illinois)
    Electro-Motive Diesel (McCook, Illinois)
    Farm Progress (St. Charles, Illinois)
    Fellowes, Inc. (Itasca, Illinois)
    First Alert (BRK Brands) (Aurora, Illinois)
    Follett Corporation (River Grove, Illinois)
    Fortune Brands (Jim Beam, Courvoisier, Titleist and many others) (Deerfield, Illinois) (Fortune 500)
    Grant Thornton LLP (Oakbrook Terrace, Illinois)
    Griffith Laboratories (Alsip, Illinois)
    Haeger Potteries (East Dundee, Illinois)
    Hendrickson International (Lemont, Illinois; a subsidiary of The Boler Company (Itasca, Illinois))
    Hewitt Associates (Lincolnshire, Illinois) (Fortune 500)
    Hospira (Lake Forest, Illinois)
    IDEX Corporation (Lake Forest, Illinois)
    Illinois Tool Works (Glenview, Illinois) (Fortune 500)
    Kraft Foods (Northfield, Illinois)
    McDonald's Corporation (Oak Brook, Illinois) (Fortune 500)
    Mead Johnson Nutrition (Glenview, Illinois)
    Medline Industries (Mundelein, Illinois)
    Molex (Lisle, Illinois)
    Motorola Solutions (Schaumburg, Illinois)
    Motorola Mobility (Libertyville, Illinois)
    Nalco Holding Company (Naperville, Illinois)
    Namco Cybertainment (Bensenville, Illinois; a subsidiary of Japan-based Namco)
    Navistar International (Warrenville, Illinois) (Fortune 500)
    Nicor (Naperville, Illinois) (S&P 500)
    NiSource (Merrillville, Indiana) (Fortune 500)
    Northfield Laboratories (Evanston, Illinois)
    Oberweis Dairy (North Aurora, Illinois)
    OfficeMax (Naperville, Illinois)
    Pabst Brewing Company (Woodridge, Illinois)
    Pactiv (Lake Forest, Illinois)
    The Pampered Chef (Addison, Illinois)
    Portillo's Restaurants (Oakbrook Terrace, Illinois)
    Quill Corporation (Lincolnshire, Illinois)
    Rand McNally (Skokie, Illinois), a subsidiary of Quebecor World
    Redbox Automated Retail, LLC (Oakbrook Terrace, Illinois)
    Sanford (Oak Brook, Illinois; a division of Newell Rubbermaid)
    Sara Lee Corporation (Downers Grove, Illinois) (Fortune 500)
    Sauer-Danfoss (Lincolnshire, Illinois)
    Sears Holdings Corporation (Hoffman Estates, Illinois) (Fortune 500)
    Serta (Hoffman Estates, Illinois)
    Shure (Niles, Illinois)
    SIRVA (Westmont, Illinois)
    Solo Cup Company (Lake Forest, Illinois)
    Stepan Company (Northfield, Illinois)
    TAP Pharmaceuticals (Lake Forest, Illinois)
    Tellabs (Naperville, Illinois)
    W.W. Grainger, Inc. (Lake Forest, Illinois)
    Tenneco (Lake Forest, IL) (Fortune 500)
    Turtle Wax (Willowbrook, Illinois)
    Ulta (Bolingbrook, Illinois)
    Underwriters Laboratories (Northbrook, Illinois)
    United Airlines (Base of Operations) (Elk Grove Township) (Fortune 500)
    United Stationers (Deerfield, Illinois) (Fortune 500)
    U.S. Foodservice (Rosemont, Illinois)
    U.S. Robotics (Schaumburg, Illinois)
    Van Kampen Investments (Oakbrook Terrace, Illinois)
    Vanee Foods (Berkeley, Illinois)
    Velsicol Chemical Corporation (Rosemont, Illinois)
    Walgreens (Deerfield, Illinois) (Fortune 500)
    Weber-Stephen Products Co. (Palatine, Illinois)
    Westell (Aurora, Illinois)
    WMS Gaming (Waukegan, Illinois)
    World Dryer (Berkeley, Illinois; a subsidiary of Carrier Commercial Refrigeration)
    W. W. Grainger (Lake Forest, Illinois) (Fortune 500)
    Zebra Technologies (Vernon Hills, Illinois)
    Zenith Electronics (Lincolnshire, Illinois; a subsidiary of South Korea-based LG Electronics)

Out of state and foreign companies with a major presence.  There are other large corporations with an established presence in Chicago and/or its suburbs (but whose corporate headquarters are located elsewhere), including:
    ABN AMRO (Asset Management)
    Accenture (Chicago; Global headquarters: Dublin, Ireland)
    Acxiom (Downers Grove, Illinois)
    Affiliated Computer Services (ACS) (Schaumburg, Illinois) (Fortune 500)
    Ajinomoto (Ajinomoto Food Ingredients LLC & Ajinomoto Heartland LLC) (Chicago)
    AkzoNobel (Polymer Chemicals Unit)
    Alcatel-Lucent
    ALDI (U.S. headquarters: Batavia, Illinois)
    Amada Co (Amada Machine Tools America) (Schaumburg, Illinois)
    American Airlines (Hub at O'Hare International Airport).
    APL Logistics (Oak Brook, Illinois)
    ArcelorMittal (U.S. headquarters: Chicago Loop; plants in Riverdale, Illinois, East Chicago, Indiana, and Burns     Harbor, Indiana)
    Astellas Pharma (Deerfield, Illinois)
    AtCor Medical, Inc. (U.S. Headquarters: Itasca, Illinois)
    AT&T
    Bank of America
    Bank of Montreal (Harris Bankcorp, BMO Capital Markets)
    BMW of North America (Central Region Office) (Schaumburg, Illinois)
    BP (Warrenville and Naperville, Illinois; Whiting, Indiana)
    Bridgestone (Bridgestone Retail Operations, LLC) (Bloomingdale, Illinois)
    Butterball LLC (Naperville, Illinois)
    Canon USA (Itasca, Illinois)
    Cargill (Chicago; Hammond, Indiana)
    Caterpillar Inc. (Peoria, Illinois)
    Citgo (Lemont Refinery, Lemont, Illinois)
    ConAgra Foods (Naperville, Illinois)
    Continental Automotive Systems (Temic) (Deer Park, Illinois)
    CSX Transportation (Northern Region Operations Center) (Calumet City, Illinois)
    Dyson Appliances Limited (Dyson US) (Chicago)
    FANUC (Hoffman Estates, Illinois)
    Fitch Group
    Ford Motor Company (Chicago Assembly, Chicago Heights Stamping)
    Fujifilm (Fujifilm Medical) Hanover Park, Illinois)
    General Electric
    Goldman Sachs
    HSBC Finance, a subsidiary of HSBC (Mettawa, Illinois)
    Hyundai Motor Company (Aurora, Illinois)
    IBM
    Ineos/Innovene (Chicago and Naperville, Illinois; Whiting, Indiana)
    JPMorgan Chase (See: Bank One Corporation)
    Makino (Elgin, Illinois)
    McKesson Corporation (Wheeling, Illinois)
    McGraw-Hill (Chicago Loop)
    Microsoft (Chicago Loop; Downers Grove, Illinois; Northlake, Illinois (data center))
    Mintel
    Mitsubishi Electric (Mitsubishi Electric Automation, Inc.) (Vernon Hills, Illinois)
    Mitutoyo (Aurora, Illinois)
    Mori Seiki (U.S. headquarters: Hoffman Estates, Illinois)
    Navigon (Navigon Inc., Chicago)
    NEC (NEC Display Solutions) (Itasca, Illinois)
    Nissan Motors (Aurora, Illinois (Nissan North America); Marengo, Illinois (Nissan Forklift))
    Noritake (Arlington Heights, Illinois)
    Nortel (Schaumburg, Illinois)
    Northrop Grumman Electronic Systems (Rolling Meadows, Illinois)
    OMRON (Schaumburg, Bannockburn, St. Charles)
    Panasonic Corporation (Panasonic Factory Solutions Company of America) (Rolling Meadows & Buffalo Grove, Illinois)
    Pearson Education, publishing as Scott Foresman (Glenview, Illinois)
    PepsiAmericas (corporate offices) (Schaumburg, Illinois)
    Popular, Inc. (Banco Popular North America) (Rosemont, Illinois)
    Rexam
    Ricardo plc (Burr Ridge, Illinois)
    Robert Bosch Corp. (Broadview, Illinois (automotive aftermarket); Mount Prospect, Illinois (production tools); Hoffman Estates, Illinois
         (Bosch Rexroth))
    Rockwell Automation (Burr Ridge, Illinois)
    SAP AG (Downers Grove, Illinois)
    Schneider Electric (Palatine, Illinois)
    Siemens Healthcare Diagnostics (U.S. headquarters: Deerfield, Illinois)
    Siemens Medical Solutions (Hoffman Estates, Illinois)
    Smithfield Foods (Armour-Eckrich Meats LLC) (Lisle and St. Charles, Illinois)
    Southwest Airlines (Chicago Midway International Airport)
    SSAB North America (Lisle, Illinois)
    STMicroelectronics (Schaumburg, Illinois)
    Sumitomo Corporation of America (Rosemont, Illinois)
    Takeda Pharmaceutical Company (U.S. headquarters: Deerfield, Illinois)
    Toshiba America (Arlington Heights; Buffalo Grove; Chicago Loop; Rolling Meadows)
    Toyota Motor Sales, U.S.A., Inc. (Aurora and Naperville, Illinois)
    Tyco International (Tyco Electrical & Metal Products) (Harvey, Illinois)
    UBS AG
    Unilever (Home & Personal Care North America) (Chicago)
    UPS (CACH) (Hodgkins, Illinois)
    UOP LLC, a subsidiary of Honeywell (Des Plaines, Illinois)
    U.S. Steel (Gary Works) (Gary, Indiana)
    Willis Group Holdings (Chicago Loop - Willis Tower, Schaumburg, Illinois)
    XL Capital (Chicago Loop, Schaumburg, Illinois)
    Yaskawa Electric Corporation (Waukegan, Illinois)
    ZF Friedrichshafen (Vernon Hills, Illinois)
    Zurich Financial Services (Schaumburg, Illinois)