> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/illinois/ # Companies in Illinois Larger organizations headquartered in Illinois, the industries and cities they sit in, and how to reach their people. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Larger organizations headquartered in Illinois include McDonald's, Walgreens, Jewel-Osco, Safeway and CommonSpirit Health. Below are the industries and cities that lead, the tools that stand out and how big they are. ## Which larger organizations are headquartered in Illinois? They include McDonald's, Walgreens, Jewel-Osco, Safeway and CommonSpirit Health. The table lists a selection in alphabetical order; names link to company profiles. | Company | Industry | Size | | --- | --- | --- | | [Abbott](https://enrich.chat/company/abbott/) | Hospitals and health care | 100,000+ | | [AbbVie](https://enrich.chat/company/abbvie/) | Pharmaceuticals | 50,000 to 100,000 | | [ADM](https://enrich.chat/company/adm/) | Food production | 25,000 to 50,000 | | [Advocate Health Care](https://enrich.chat/company/advocate-health-care/) | Hospitals and health care | 100,000+ | | [Aon](https://enrich.chat/company/aon/) | Insurance | 50,000 to 100,000 | | [Baxter International](https://enrich.chat/company/baxter-international/) | Medical devices | 25,000 to 50,000 | | [CommonSpirit Health](https://enrich.chat/company/commonspirit-health/) | Hospitals and health care | 100,000+ | | [Crowe Cayman](https://enrich.chat/company/crowe-cayman/) | Professional training and coaching | 25,000 to 50,000 | | [Cushman & Wakefield](https://enrich.chat/company/cushman-and-wakefield/) | Real estate | 25,000 to 50,000 | | [GE Healthcare](https://enrich.chat/company/ge-healthcare/) | Hospitals and health care | 50,000 to 100,000 | | [Help at Home](https://enrich.chat/company/help-at-home/) | Hospitals and health care | 50,000 to 100,000 | | [Jewel-Osco](https://enrich.chat/company/jewel-osco/) | Retail | 100,000+ | | [John Deere](https://enrich.chat/company/john-deere/) | Machinery | 50,000 to 100,000 | | [Kellanova](https://enrich.chat/company/kellanova/) | Food production | 25,000 to 50,000 | | [Levy Restaurants](https://enrich.chat/company/levy-restaurants/) | Food and beverages | 50,000 to 100,000 | | [LKQ](https://enrich.chat/company/lkq/) | Automotive | 25,000 to 50,000 | | [McDonald's](https://enrich.chat/company/mcdonalds/) | Restaurants | 100,000+ | | [Medline](https://enrich.chat/company/medline/) | Medical devices | 25,000 to 50,000 | | [Molex](https://enrich.chat/company/molex/) | Electrical and electronic manufacturing | 25,000 to 50,000 | | [Mondelez Canada](https://enrich.chat/company/mondelez-canada/) | Food production | 50,000 to 100,000 | | [Northern Trust](https://enrich.chat/company/northern-trust/) | Financial services | 25,000 to 50,000 | | [R.R. Donnelley & Sons](https://enrich.chat/company/r-r-donnelley-and-sons/) | Mechanical or industrial engineering | 25,000 to 50,000 | | [Reyes Holdings, L.L.C.](https://enrich.chat/company/reyes-holdings-l-l-c/) | Food and beverages | 25,000 to 50,000 | | [Safeway](https://enrich.chat/company/safeway/) | Retail | 100,000+ | | [The Allstate](https://enrich.chat/company/the-allstate/) | Insurance | 50,000 to 100,000 | | [Transdev North America](https://enrich.chat/company/transdev-north-america/) | Transportation, trucking and railroad | 100,000+ | | [Ulta Beauty](https://enrich.chat/company/ulta-beauty/) | Retail | 25,000 to 50,000 | | [United Airlines](https://enrich.chat/company/united-airlines/) | Airlines and aviation | 50,000 to 100,000 | | [Walgreens](https://enrich.chat/company/walgreens/) | Health, wellness and fitness | 100,000+ | | [YMCA of the USA (National Resource Office)](https://enrich.chat/company/ymca-of-the-usa-national-resource-office/) | Nonprofit organization management | 25,000 to 50,000 | ## Which industries are biggest in Illinois? The bars show the share of the organizations listed for Illinois that work in each industry. **Figure: Industries of organizations in Illinois.** Bars for the share of listed organizations in Illinois by industry: Hospitals and health care 10%, Information technology and services 7%, Retail 6%, Insurance 5%, Financial services 4%, Food and beverages 4%. *Share of the organizations listed for Illinois in each industry.* ## Which cities in Illinois are home to the most? The bars show where the listed organizations have their headquarters. **Figure: Headquarters cities in Illinois.** Bars for the share of listed organizations in Illinois headquartered in each city: Chicago 50%, Rosemont 4%, Downers Grove 3%, Oak Brook 3%, Northbrook 2%, Deerfield 2%. *Share of the organizations listed for Illinois by headquarters city.* ## What technology stands out in Illinois? Each tool below is detected more often among organizations in Illinois than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out in Illinois.** Bars for the share of listed organizations in Illinois where each tool was detected, with a tick for the share across everything listed: New Relic 35% against 19%, Pardot (Account Engagement) 22% against 10%, Marketo 14% against 7%, iCIMS 13% against 4%, LiveRamp 11% against 5%, Adobe Analytics (Omniture) 11% against 6%. *Share of listed organizations in Illinois where each tool was detected. The tick marks the share across all listed organizations.* ## How big are the organizations in Illinois? The columns show how the listed organizations spread across six size ranges. **Figure: Size of organizations in Illinois.** Six columns for the share of listed organizations in Illinois in each size range from 2,000 to over 100,000 employees: 2-5K 45%, 5-10K 20%, 10-25K 22%, 25-50K 8%, 50-100K 3%, 100K+ 3%. *Share of the organizations listed for Illinois in each size range.* ## Browse Illinois by industry [Hospitals and health care](https://enrich.chat/companies-in/illinois/hospitals-and-health-care/)[Information technology and services](https://enrich.chat/companies-in/illinois/information-technology-and-services/)[Retail](https://enrich.chat/companies-in/illinois/retail/)[Insurance](https://enrich.chat/companies-in/illinois/insurance/)[Financial services](https://enrich.chat/companies-in/illinois/financial-services/)[Food and beverages](https://enrich.chat/companies-in/illinois/food-and-beverages/)[Higher education](https://enrich.chat/companies-in/illinois/higher-education/)[Machinery](https://enrich.chat/companies-in/illinois/machinery/)[Mechanical or industrial engineering](https://enrich.chat/companies-in/illinois/mechanical-or-industrial-engineering/) ## How do you reach the people at organizations in Illinois? Pick an organization from the table, then ask your AI agent for the people in the roles you sell to. ```text Use www.enrich.chat to find the CIOs and heads of IT at [company] in Illinois, with titles and verified work emails ``` ## Which Illinois cities have industry pages? Pick a city to see its bigger companies by industry. [Chicago, IL](https://enrich.chat/companies-in/chicago-il/) ## Which industry codes are common in Illinois? NAICS codes with a page for Illinois: [NAICS 541511: Custom Computer Programming Services](https://enrich.chat/naics/541511/illinois/)[NAICS 541512: Computer Systems Design Services](https://enrich.chat/naics/541512/illinois/)[NAICS 722511: Full-Service Restaurants](https://enrich.chat/naics/722511/illinois/)[NAICS 531210: Offices of Real Estate Agents](https://enrich.chat/naics/531210/illinois/)[NAICS 524210: Insurance Agencies and Brokerages](https://enrich.chat/naics/524210/illinois/)[NAICS 541613: Marketing Consulting Services](https://enrich.chat/naics/541613/illinois/)[NAICS 621111: Offices of Physicians](https://enrich.chat/naics/621111/illinois/)[NAICS 488510: Freight Transportation Arrangement](https://enrich.chat/naics/488510/illinois/)[NAICS 238220: Plumbing, Heating, and Air-Conditioning](https://enrich.chat/naics/238220/illinois/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/illinois/) ## Frequently asked questions ### Which larger organizations are headquartered in Illinois? They include McDonald's, Walgreens, Jewel-Osco, Safeway and CommonSpirit Health. The page lists a selection with links to their profiles. ### Which industries are biggest in Illinois? The biggest are hospitals and health care, information technology and services, retail and insurance. ### What technology stands out in Illinois? Tools that stand out include New Relic, Pardot (Account Engagement), Marketo and iCIMS. ### How do I contact people at these organizations? Ask your AI agent to use www.enrich.chat to find the people in the roles you sell to, with titles and verified work emails. ## Try this prompt Find people at companies in Illinois ```text Use www.enrich.chat to find the CIOs and heads of IT at [company] in Illinois, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Companies in Florida](https://enrich.chat/companies-in/florida/) - [Companies in Massachusetts](https://enrich.chat/companies-in/massachusetts/) - [Companies in Pennsylvania](https://enrich.chat/companies-in/pennsylvania/) - [Companies in Georgia](https://enrich.chat/companies-in/georgia/) - [Companies in New Jersey](https://enrich.chat/companies-in/new-jersey/) - [Companies in Virginia](https://enrich.chat/companies-in/virginia/) - [Companies in Ohio](https://enrich.chat/companies-in/ohio/) - [Companies in North Carolina](https://enrich.chat/companies-in/north-carolina/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)