List of IT Services Companies in Illinois, United States

Discover top IT Services companies in Illinois, United States with our industry directory. Our B2B database features detailed company profiles, executive information, and performance data for informed decision-making. From sourcing partners to identifying prospects, access accurate business intelligence and connect directly with industry leaders. Key IT Services companies in Illinois include Experian Automotive, TransUnion, Quinnox Inc and Alight Solutions, alongside other established enterprises.

  • Experian Automotive

    955 American Lane, Schaumburg IL

    Employees
    10000+
    Annual revenue
    $6300M
    SIC Code
    732 - Consumer Credit Reporting Agencies, Mercantile Reporting Agencies,
    NAICS Code
    561 - Administrative and Support Services
    View all Info and Employees
  • TransUnion

    555 W Adams, Chicago IL

    Employees
    10000+
    Annual revenue
    $3200M
    SIC Code
    732 - Consumer Credit Reporting Agencies, Mercantile Reporting Agencies,
    NAICS Code
    561 - Administrative and Support Services
    View all Info and Employees
  • Quinnox Inc

    1 S Wacker Dr Suite 3150, Chicago IL

    Employees
    2500-5000
    Annual revenue
    $1100M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541 - Professional, Scientific, and Technical Services
    View all Info and Employees
  • Alight Solutions

    320 S Canal St. 50th floor suite 5000, Chicago IL

    Employees
    10000+
    Annual revenue
    $1000M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • NielsenIQ

    200 W Jackson Blvd, Chicago IL

    Employees
    10000+
    Annual revenue
    $1000M
    SIC Code
    7375 - Information Retrieval Services
    View all Info and Employees
  • AHEAD

    401 N Michigan Ave, Suite 3400, Chicago IL

    Employees
    5000-10000
    Annual revenue
    $1000M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Matrix Technology Inc

    700 W.Bryn Mawr Ste. #100, Chicago IL

    Employees
    500-1000
    Annual revenue
    $1000M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541511 - Custom Computer Programming Services
    View all Info and Employees
  • Chicago Connectory

    222. W Merchandise Mart Plaza Suite 570 5th Floor, Chicago IL

    Employees
    5-10
    Annual revenue
    $1000M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • CDWG

    120 Riverside Plz, Chicago IL

    Employees
    5000-10000
    Annual revenue
    $618.6M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    5415 - Computer Systems Design and Related Services
    View all Info and Employees
  • Booksy

    515 N State St, Chicago IL

    Employees
    125-250
    Annual revenue
    $512.299M
    SIC Code
    738 - Miscellaneous Business Services
    NAICS Code
    812112 - Beauty Salons
    View all Info and Employees
  • METMOX

    1701 E Woodfield Rd, Schaumburg IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • TopBloc

    600 W Chicago Ave Suite 275, Chicago IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Wavicle Data Solutions

    564 West Randolph Street, Suite 600, Chicago IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Saggezza Inc

    200 W. Madison St, 1800, Chicago IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Bounteous

    4115 N Ravenswood Ave, Chicago IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Levata

    200 W Monroe St 23rd Floor, Chicago IL

    Employees
    500-1000
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Proxicom

    Chicago IL

    Employees
    25-50
    Annual revenue
    $500M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • FIGmd

    6952 Rote Rd Suite 400, Rockford IL

    Employees
    2500-5000
    Annual revenue
    $144.4M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541512 - Computer Systems Design Services
    View all Info and Employees
  • Barcodes Inc

    200 West Monroe 23rd Floor, Chicago IL

    Employees
    500-1000
    Annual revenue
    $140.5M
    SIC Code
    504 - Professional and Commercial Equipment and Supplies
    NAICS Code
    42344 - Other Commercial Equipment Merchant Wholesalers
    View all Info and Employees
  • The Revere Group

    325 North LaSalle St., Chicago IL

    Employees
    500-1000
    Annual revenue
    $131.4M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    5182 - Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
    View all Info and Employees
  • Bhuvi IT Solutions

    830 E Higgins Rd Suite 111 R, Schaumburg IL

    Employees
    25-50
    Annual revenue
    $123M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541511 - Custom Computer Programming Services
    View all Info and Employees
  • LiveAdmins LLC

    500 N Michigan Avenue Suite 600, Chicago IL

    Employees
    250-500
    Annual revenue
    $105M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541511 - Custom Computer Programming Services
    View all Info and Employees
  • ISACA

    1700 E. Golf Road, Suite 400, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • SmartRoom

    500 N Dearborn, Suite 800, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Mattersight Corp

    200 W Madison St, Suite 3100, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Arity

    222 Merchandise Mart, Suite 875, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • EcomExtension

    1255 S State St. # 906, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Medix Technology

    222 South Riverside Plaza, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Cognine Technologies

    919 N Plum Grove Suite E, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Codal Inc

    433 W Van Buren St, Suite 205, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • TotalMed IT

    999 Plaza Drive, Suite 710, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Evolutyz Corp

    1560 Wall Street, Suite 105, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • RedMane Technology LLC

    8614 W Catalpa Ave, Suite 1001, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Concord IT Systems

    N LaSalle St, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • SID Global Solutions

    1900 E. Golf Road, Suite 925, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Tekniligenz Inc

    105 West Madison Street, Suite#1702, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • Third I

    200 E Randolph St, Suite 3010, Chicago IL

    Employees
    250-500
    Annual revenue
    $100M
    SIC Code
    737902 - Computer related consulting services
    View all Info and Employees
  • 1WorldSync

    300 South Riverside Plaza 14th Floor, Chicago IL

    Employees
    500-1000
    Annual revenue
    $98.4M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541513 - Computer Facilities Management Services
    View all Info and Employees
  • LAC Group

    425 S Financial Pl Suite 2250, Chicago IL

    Employees
    250-500
    Annual revenue
    $77.6M
    SIC Code
    874 - Management and Public Relations Services
    View all Info and Employees
  • Teng Associates Inc

    205 N Michigan Ave. Ste. 3600, Chicago IL

    Employees
    5-10
    Annual revenue
    $75M
    SIC Code
    8712 - Architectural Services
    NAICS Code
    5413 - Architectural, Engineering, and Related Services
    View all Info and Employees
  • Bourntec Solutions Inc

    1701 E Wood Field Road Suite 200, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $73.1M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541513 - Computer Facilities Management Services
    View all Info and Employees
  • RL Canning

    8700 W Bryn Mawr Suite 120N, Chicago IL

    Employees
    250-500
    Annual revenue
    $70.6M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541512 - Computer Systems Design Services
    View all Info and Employees
  • SDI Presence LLC

    200 E Randolph St, Chicago IL

    Employees
    250-500
    Annual revenue
    $67.8M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541512 - Computer Systems Design Services
    View all Info and Employees
  • Dickinson Associates

    One North LaSalle Street Suite 800, Chicago IL

    Employees
    250-500
    Annual revenue
    $65.7M
    SIC Code
    274 - Miscellaneous Publishing
    View all Info and Employees
  • W Capra Consulting Group

    221 North LaSalle Street Suite 1325, Chicago IL

    Employees
    125-250
    Annual revenue
    $63.4M
    SIC Code
    874 - Management and Public Relations Services
    NAICS Code
    5416 - Management, Scientific, and Technical Consulting Services
    View all Info and Employees
  • Pegasus Knowledge Solutions

    1111 Plaza Drive Suite 790, Schaumburg IL

    Employees
    250-500
    Annual revenue
    $60.9M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    View all Info and Employees
  • TheMobileAppFactory

    3331 Commercial Ave, Chicago IL

    Employees
    250-500
    Annual revenue
    $60.3M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    NAICS Code
    541511 - Custom Computer Programming Services
    View all Info and Employees
  • iPass

    1700 W Irving Park Rd Suite 209A, Chicago IL

    Employees
    25-50
    Annual revenue
    $54M
    SIC Code
    737 - Computer Programming, Data Processing, and Other Computer Related
    View all Info and Employees
  • applustech

    120 S LaSalle Street Suite 1450, Chicago IL

    Employees
    250-500
    Annual revenue
    $52.4M
    SIC Code
    382 - Laboratory Apparatus and Analytical, Optical, Measuring, and Contr
    NAICS Code
    488 - Support Activities for Transportation
    View all Info and Employees
  • Chd Expert

    176 N Racine Ave Suite 250, Chicago IL

    Employees
    125-250
    Annual revenue
    $50.6M
    SIC Code
    873 - Research, Development, and Testing Services
    NAICS Code
    541910 - Marketing Research and Public Opinion Polling
    View all Info and Employees

Browse by City

IT Services Companies in Other States