# List of companies with a mobile app in Illinois

Tamtam tracks 178 companies with a mobile app headquartered in Illinois. This list ranks the 50 largest by number of employees on LinkedIn, led by McDonald's, Walgreens Boots Alliance and Abbott. Their median headcount is 6,500. Half of them were founded in 1971 or later. The most common headquarters are Chicago (21), Rosemont (4) and Oak Brook (3).

These Illinois-based companies represent a diverse cross-section of large enterprises in retail, healthcare, hospitality, and manufacturing. Many are well-established global players, with significant employee counts, indicating their scale and long-standing presence in their respective industries. The list includes firms like McDonald's, a global fast-food chain; Walgreens Boots Alliance, an integrated healthcare and retail company; Abbott, a healthcare leader in diagnostics and medical devices; and John Deere, a global leader in agriculture and construction machinery.

A notable pattern among these companies is the concentration of headquarters in the Chicago metropolitan area, with several key players like Hyatt, United Airlines, and Northern Trust based in the city itself. This suggests Chicago continues to be a central hub for major corporate operations across various sectors within Illinois.

🇺🇸 Illinois · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [McDonald's](https://www.tamtam.ai/c/mcdonald-s) (corporate.mcdonalds.com)<br>global fast-food restaurant chain operating over 37,000 locations worldwide, serving popular menu items and employing 1.9 million people | Restaurants | 🇺🇸 Chicago | 261,219 |  |
| 2 | [Walgreens Boots Alliance](https://www.tamtam.ai/c/walgreens-boots-alliance) (walgreens.com)<br>Integrated healthcare and retail company operating thousands of pharmacy locations, providing medicines, health services, beauty products, and digital convenience globally. | Retail Pharmacies | 🇺🇸 Deerfield | 141,576 | 2014 |
| 3 | [Abbott](https://www.tamtam.ai/c/abbott-abbott-park) (abbott.com)<br>A global healthcare leader offering life-changing technologies in diagnostics, medical devices, nutrition, and generic medicines, with over 115,000 colleagues serving in 160+ countries | Hospitals and Health Care | 🇺🇸 Abbott Park | 140,778 |  |
| 4 | [Walgreens](https://www.tamtam.ai/c/walgreens) (walgreens.com)<br>A leading retail pharmacy offering health and beauty products, with a focus on providing pharmacy services and a seamless omnichannel experience for customers | Retail Pharmacies | 🇺🇸 Deerfield | 90,723 | 1901 |
| 5 | [Hyatt](https://www.tamtam.ai/c/hyatt) (hyatt.com)<br>Global management of luxury hotels and all-inclusive resorts across six continents including vacation clubs, loyalty programs, destination management services, and travel technology solutions. | Hospitality | 🇺🇸 Chicago | 84,541 |  |
| 6 | [United Airlines](https://www.tamtam.ai/c/united-airlines) (united.com)<br>Leading airline with over 90,000 employees focused on customer service, sustainability, and teamwork, currently hiring 15,000 new team members in 2023 | Airlines and Aviation | 🇺🇸 Chicago | 75,520 | 1926 |
| 7 | [John Deere](https://www.tamtam.ai/c/john-deere) (deere.com)<br>A global leader in cutting-edge products and technology for agriculture and construction, pushing boundaries for productivity and sustainability worldwide | Machinery Manufacturing | 🇺🇸 Moline | 55,618 | 1837 |
| 8 | [Allstate](https://www.tamtam.ai/c/allstate) (allstate.com)<br>This company advocates for peace of mind, builds diverse teams, develops careers, and empowers people and communities through innovation and advocacy | Insurance | 🇺🇸 Northbrook | 55,012 | 1931 |
| 9 | [Ulta Beauty](https://www.tamtam.ai/c/ulta-beauty) (ulta.com)<br>National retailer offering cosmetics, fragrance, skincare, and hair products from five hundred brands plus in-store salon services including hair, skin, and makeup. | Retail | 🇺🇸 Bolingbrook | 40,136 | 1990 |
| 10 | [Northern Trust](https://www.tamtam.ai/c/northern-trust) (northerntrust.com)<br>Global provider of innovative wealth management, asset servicing, and investment solutions for institutions, families, and individuals through diverse technology and financial expertise. | Financial Services | 🇺🇸 Chicago | 30,965 | 1889 |
| 11 | [US Foods](https://www.tamtam.ai/c/us-foods) (usfoods.com)<br>Leading foodservice distributor partnering with restaurants & operators to provide innovative food offerings, e-commerce solutions, & technology to help businesses succeed | Food and Beverage Services | 🇺🇸 Rosemont | 24,825 |  |
| 12 | [Discover Financial Services](https://www.tamtam.ai/c/discover-financial-services) (discover.com)<br>Provider of lending products and payment services enabling merchants, fintech companies, and consumers to access financial solutions and global card acceptance. | Financial Services | 🇺🇸 Riverwoods | 21,937 |  |
| 13 | [Grainger](https://www.tamtam.ai/c/grainger) (bit.ly)<br>Provides over a million industrial-quality products, inventory management, technical support, and consultative sales for diverse industries worldwide. | Retail Office Equipment | 🇺🇸 Lake Forest | 21,907 | 1927 |
| 14 | [Motorola Mobility (a Lenovo Company)](https://www.tamtam.ai/c/motorola-mobility-a-lenovo-company) (motorola.com)<br>Innovative smartphones and accessories are created by a global team, fostering collaboration, creativity, and a commitment to consumer-centric mobile technology innovation | Computers and Electronics Manufacturing | 🇺🇸 Chicago | 17,456 | 1928 |
| 15 | [Northwestern Medicine](https://www.tamtam.ai/c/northwestern-medicine) (nm.org)<br>Academic medical center combining research, teaching, and patient care with a large workforce across numerous regional locations and top-ranked hospitals. | Hospitals and Health Care | 🇺🇸 Chicago | 16,181 |  |
| 16 | [OSF HealthCare](https://www.tamtam.ai/c/osf-healthcare) (osfhealthcare.org)<br>Integrated health system with hospitals, home care, nursing colleges, digital health services, philanthropic foundation, and healthcare innovation investments. | Hospitals and Health Care | 🇺🇸 Peoria | 12,433 |  |
| 17 | [Advocate Health Care](https://www.tamtam.ai/c/advocate-health-care) (advocatehealth.com)<br>Integrated nonprofit health system providing clinical innovation, specialized care, extensive research, education, and community benefits across multiple U.S. states. | Hospitals and Health Care | 🇺🇸 Oak Brook | 11,676 |  |
| 18 | [BMO U.S.](https://www.tamtam.ai/c/bmo-u-s) (bmo.com)<br>Providing personalized banking solutions through extensive branch network and dedicated team to support customers at every financial life stage. | Banking | 🇺🇸 Chicago | 11,608 |  |
| 19 | [Jewel-Osco](https://www.tamtam.ai/c/jewel-osco) (jewelosco.com)<br>A customer-focused grocery store chain in Chicagoland area, providing quality products, friendly service, and great value since 1899 Operating 188 stores | Retail | 🇺🇸 Itasca | 11,264 | 1899 |
| 20 | [Groupon](https://www.tamtam.ai/c/groupon) (job-boards.eu.greenhouse.io)<br>An experiences marketplace offering local deals, live events, and travel options, helping people discover new experiences while assisting businesses in growing | Software Development | 🇺🇸 Chicago | 10,452 | 2008 |
| 21 | [Evernorth Health Services](https://www.tamtam.ai/c/evernorth-health-services) (evernorth.com)<br>Provider of adaptable pharmacy, care, and benefit services aiming to advance organizations and individuals through connected solutions | Hospitals and Health Care | 🇺🇸 St. Louis | 7,188 |  |
| 22 | [Athletico](https://www.tamtam.ai/c/athletico) (athletico.com)<br>A leading provider of orthopedic rehabilitation services with over 900 locations nationwide, committed to quality care, patient satisfaction, and community outreach | Wellness and Fitness Services | 🇺🇸 Oak Brook | 6,722 | 1991 |
| 23 | [Grubhub](https://www.tamtam.ai/c/grubhub) (grubhub.com)<br>Connecting local restaurants with customers nationwide through an easy-to-use platform, delivering authentic cuisine and boosting business revenue. | Technology, Information and Internet | 🇺🇸 Chicago | 6,692 | 2004 |
| 24 | [Crate & Barrel](https://www.tamtam.ai/c/crate-and-barrel) (crateandbarrel.com)<br>Leading home furnishings specialty retailer, offering curated products and custom delivery, with physical stores and online platforms across multiple brands globally. | Retail | 🇺🇸 Northbrook | 6,531 | 1962 |
| 25 | [Chicago Transit Authority](https://www.tamtam.ai/c/chicago-transit-authority) (transitchicago.com)<br>Provides affordable and quality transit services connecting people, jobs, and communities across Chicago and 35 surrounding suburbs daily. | Urban Transit Services | 🇺🇸 Chicago | 6,500 | 1947 |
| 26 | [Great Wolf Lodge](https://www.tamtam.ai/c/great-wolf-lodge) (greatwolf.com)<br>Indoor water park resorts offering family entertainment, dining, retail, and career growth opportunities with exceptional service and fun environment. | Hospitality | 🇺🇸 Chicago | 6,083 | 1997 |
| 27 | [Illinois State University](https://www.tamtam.ai/c/illinois-state-university) (illinoisstate.edu)<br>Offering more than 160 fields of study to prepare diverse individuals in becoming informed members of society through collaborative teaching, scholarship, and service | Higher Education | 🇺🇸 Normal | 5,799 | 1857 |
| 28 | [Rate](https://www.tamtam.ai/c/rate) (rate.com)<br>Residential mortgage and finance services providing quick loan approvals and licensing across multiple states including Arizona, California, New York, and New Jersey. | Financial Services | 🇺🇸 Chicago | 5,564 | 2000 |
| 29 | [Wintrust Financial Corporation](https://www.tamtam.ai/c/wintrust-financial-corporation) (wintrust.com)<br>Provides banking, specialty finance, and wealth management services with a community-focused approach emphasizing integrity and client impact. | Financial Services | 🇺🇸 Rosemont | 5,374 | 1991 |
| 30 | [National Association of REALTORS®](https://www.tamtam.ai/c/national-association-of-realtors) (nar.realtor)<br>America’s largest trade association representing 15 million real estate industry professionals Promotes diversity, respect, and fosters member-focused culture through social media engagement | Real Estate | 🇺🇸 Chicago | 4,551 | 1908 |
| 31 | [BioLife Plasma Services](https://www.tamtam.ai/c/biolife-plasma-services) (biolifeplasma.com)<br>The company focuses on improving the lives of patients with rare diseases through donor support, career growth opportunities, and comprehensive benefits in a friendly environment | Pharmaceutical Manufacturing | 🇺🇸 Bannockburn | 4,006 |  |
| 32 | [Wyzant](https://www.tamtam.ai/c/wyzant) (wyzant.com)<br>Connecting individuals with over 80,000 tutors in 300+ subjects for tailored 1-to-1 lessons to help achieve academic and career goals | Technology, Information and Internet | 🇺🇸 Chicago | 3,698 |  |
| 33 | [Cooper's Hawk Winery and Restaurants](https://www.tamtam.ai/c/cooper-s-hawk-winery-and-restaurants) (chwinery.com)<br>An elegant tasting room and scratch kitchen restaurant chain with a large wine club, multiple locations, award-winning wines, and celebrity partnerships | Food and Beverage Services | 🇺🇸 Downers Grove | 3,605 | 2005 |
| 34 | [Potbelly Sandwich Works](https://www.tamtam.ai/c/potbelly-sandwich-works) (potbelly.com)<br>A neighborhood sandwich shop known for oven-toasted sandwiches, soups, shakes, and cookies, offering fast, friendly service in a welcoming environment | Restaurants | 🇺🇸 Chicago | 3,397 | 1977 |
| 35 | [NAV Fund Services](https://www.tamtam.ai/c/nav-fund-services) (navfundservices.com)<br>Top-ranked fund administrator with award-winning service and technology, specializing in cost-effective solutions, digital assets, and emerging managers | Financial Services | 🇺🇸 Oakbrook Terrace | 3,061 | 1991 |
| 36 | [Echo Global Logistics](https://www.tamtam.ai/c/echo-global-logistics) (echo.com)<br>Provider of technology-driven freight brokerage and managed transportation solutions across multiple modes, simplifying supply chain management for diverse industries. | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Chicago | 2,874 | 2005 |
| 37 | [Applied Systems](https://www.tamtam.ai/c/applied-systems) (www1.appliedsystems.com)<br>A leading provider of innovative cloud software for the insurance industry, driving transformation through digitization, automation, and new partnerships | Software Development | 🇺🇸 Chicago | 2,813 | 1983 |
| 38 | [UI Health](https://www.tamtam.ai/c/ui-health) (hospital.uillinois.edu)<br>This academic health enterprise in Illinois offers comprehensive care, education, and research to promote health equity and train healthcare leaders | Hospitals and Health Care | 🇺🇸 Chicago | 2,813 |  |
| 39 | [Chamberlain Group](https://www.tamtam.ai/c/chamberlain-group) (chamberlaingroup.com)<br>A global leader in intelligent access technology, providing seamless, secure access to homes and businesses through innovative products and software solutions | Software Development | 🇺🇸 Oak Brook | 2,781 | 1954 |
| 40 | [IAA](https://www.tamtam.ai/c/iaa-westchester) (iaai.com)<br>Global marketplace for commercial assets and vehicles, providing services and solutions for buyers and sellers worldwide through innovative technology and efficient processes | Motor Vehicle Manufacturing | 🇺🇸 Westchester | 2,759 | 1982 |
| 41 | [Robert Bosch Tool Corporation NA](https://www.tamtam.ai/c/robert-bosch-tool-corporation-na) (boschtools.com)<br>Industry-leading tool corporation manufacturing power tools and accessories, providing innovative, durable, and versatile products through diverse global opportunities for growth and development | Manufacturing | 🇺🇸 Mt. Prospect | 2,525 | 1886 |
| 42 | [Shure](https://www.tamtam.ai/c/shure) (shure.com)<br>Designs and manufactures wired and wireless microphones, networked audio systems, signal processors, conferencing systems, and premium earphones and headphones. | Computers and Electronics Manufacturing | 🇺🇸 Niles | 2,320 | 1925 |
| 43 | [Life Fitness / Hammer Strength](https://www.tamtam.ai/c/life-fitness-hammer-strength) (lifefitness.com)<br>A global leader in fitness solutions for over 45 years, inspiring healthier lives through cardio, strength, group training, and rehabilitation products | Wellness and Fitness Services | 🇺🇸 Rosemont | 2,264 |  |
| 44 | [Career Education Corporation](https://www.tamtam.ai/c/career-education-corporation) (perdoceoed.com)<br>Educational services company offering diverse learning formats (online, campus-based, blended) through AIU and CTU with innovative technology and personalized courses | Education Administration Programs | 🇺🇸 Schaumburg | 2,250 | 1994 |
| 45 | [Lettuce Entertain You Restaurants](https://www.tamtam.ai/c/lettuce-entertain-you-restaurants) (lettuce.com)<br>Owns, manages, and licenses over 110 restaurants across multiple states, offering diverse dining experiences from fast casual to fine dining concepts. | Restaurants | 🇺🇸 Chicago | 2,225 | 1971 |
| 46 | [Culligan International](https://www.tamtam.ai/c/culligan-international) (culliganinternational.com)<br>Provides advanced water filtration, softening, and treatment systems for homes and businesses through a vast global dealer network. | Consumer Services | 🇺🇸 Rosemont | 2,191 | 1936 |
| 47 | [Advocate Lutheran General Hospital](https://www.tamtam.ai/c/advocate-lutheran-general-hospital) (advocatehealth.com)<br>A top-ranked teaching hospital in Chicago with specialized pediatric care, trauma center, surgical excellence, stroke care, and nursing excellence | Hospitals and Health Care | 🇺🇸 Park Ridge | 2,185 |  |
| 48 | [L&W Supply](https://www.tamtam.ai/c/l-and-w-supply) (abcsupplyinteriors.com)<br>A nationwide distributor of gypsum wallboard and building materials, offering seamless service and access to products through local branches | Wholesale Building Materials | 🇺🇸 Chicago | 1,914 | 1972 |
| 49 | [CIBC US](https://www.tamtam.ai/c/cibc-us) (us.cibc.com)<br>This company provides a range of banking services including commercial & personal banking, wealth management, and small business financial solutions They are an Equal Housing Lender and Member FDIC | Financial Services | 🇺🇸 Chicago | 1,910 |  |
| 50 | [Busey](https://www.tamtam.ai/c/busey) (busey.com)<br>A financial holding company offering banking, wealth management, and financial technology services with a focus on community development and employee satisfaction | Banking | 🇺🇸 Champaign | 1,866 | 1868 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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## The same list elsewhere in United States

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Source: https://www.tamtam.ai/l/companies-with-mobile-app-illinois