| # | Company | Employees |
|---|---|---|
| 1 |
Walgreens Boots Alliancewalgreens.com
Integrated healthcare and retail company operating thousands of pharmacy locations, providing medicines, health services, beauty products, and digital convenience globally. |
141,576 |
| 2 |
Walgreenswalgreens.com
A leading retail pharmacy offering health and beauty products, with a focus on providing pharmacy services and a seamless omnichannel experience for customers |
90,723 |
| 3 |
Baxter International Inc.baxter.com
Development and delivery of innovative medical technologies and solutions to support clinicians and improve patient health worldwide. |
39,170 |
| 4 |
ABSabs-us.net
Business analytical and consulting company founded by experienced professionals dedicated to providing top-quality services for small and medium-size businesses |
3,436 |
| 5 |
Alera Group, Inc.aleragroup.com
Offers risk management, insurance, and financial services; delivers collaborative, holistic solutions to business and personal challenges. |
2,836 |
| 6 |
Fortune Brands Innovationsfbin.com
Designs and manufactures water innovations, outdoor living products, security solutions, and kitchen and bath cabinets for homeowners. |
2,603 |
| 7 |
Essendantessendant.com
A distribution company providing wholesale distribution, fulfillment services, and system integrations to help customers optimize their supply chain and improve customer experience in commerce |
2,465 |
| 8 |
Zifozifornd.com
Provides specialist scientific informatics services including digital transformation, data science, AI, and project management for science-driven organizations. |
2,214 |
| 9 | 2,211 | |
| 10 |
Advanced Clinicaladvancedclinical.com
clinical development and strategic resourcing organization improving clinical research experiences and outcomes through customized solutions and experienced guidance |
1,118 |
| 11 |
Justrite Safety Groupjustrite.com
Manufactures a wide range of industrial safety solutions for worker and workplace safety as well as environmental protection, including safety identification products and hazardous storage equipment |
1,115 |
| 12 |
The Master Lock Companymasterlock.com
provides a wide range of padlocks, safes, and security solutions for consumer, commercial, and industrial users worldwide |
944 |
| 13 |
Therma-Tru Doorsthermatru.com
Leader in entry door solutions, specializing in fiberglass doors Offers complete portfolio of entry and patio door systems with decorative options Headquarters in Ohio |
824 |
| 14 |
Vantage Specialty Chemicalsvantagegrp.com
Delivers natural chemical solutions, formulations, ingredients, and actives for diverse industries including personal care, food, agriculture, and pharmaceuticals. |
720 |
| 15 |
YouFit Gymsyoufit.com
Affordable gym offering personalized workouts, high-end amenities, registered dietitian advice, group training, fitness classes, and on-demand classes starting at $999 |
648 |
| 16 |
Meridian Group International, Inc.themeridian.com
Providing global IT services including cybersecurity, cloud, application development, vendor management, and financial solutions to optimize business performance. |
577 |
| 17 |
Miller Cooper & Co., Ltd.millercooper.com
A leading accounting firm in Chicago, serving middle market businesses with personalized client service, global capabilities, and focus on work/life balance for employees |
464 |
| 18 |
MBW RCMmbwrcm.com
An analytics-driven Revenue Cycle Management company providing medical billing, coding, and business analytics services to healthcare providers, with over 12 years of experience |
437 |
| 19 |
Fiberon Deckingfiberondecking.com
Manufacturing high-performing wood alternative decking, railing and cladding for global residential and commercial construction using sustainable practices and stain resistant hardwood aesthetics. |
388 |
| 20 |
Deerfield Academydeerfield.edu
Since 1797, this institution has been preparing students for leadership in a changing world, offering boarding and day school education |
387 |
| 21 |
Trinity International Universitytiu.edu
A private, Christian university with campuses in Illinois and California, educating students to think and act as Christians in today's culture |
348 |
| 22 |
Accreditation Association for Ambulatory Health Care (AAAHC)aaahc.org
This organization provides accreditation for ambulatory health care organizations, ensuring they meet national standards for high quality and safe services |
290 |
| 23 |
Alera Group (GCG Financial)gcgfinancial.com
A premier financial services firm focused on enhancing financial security for businesses and families Offers innovative solutions, wealth management, and retirement strategies |
280 |
| 24 |
House of Rohlhouseofrohl.com
curated luxury plumbing brands combining heritage, innovation, and design to enhance kitchens and bathrooms with timeless craftsmanship |
222 |
| 25 |
Cardiac Sciencezoll.com
A company specializing in cardiac medical devices and solutions, now a part of ZOLL Medical Corporation Visit website or follow on LinkedIn |
222 |
| 26 |
Lagassesolutionscentral.ussco.com
A leading wholesale source for janitorial, sanitary, foodservice, and disposable products, offering next-day delivery and a wide selection to various distributor channels |
193 |
| 27 |
Deerfield Park Districtdeerfieldparks.org
The company provides recreation programs and facilities for residents of all ages through revenue from property taxes and user fees |
172 |
| 28 |
Deerfield High Schooldist113.org
A public four year high school in Township High School District 113, providing education to students alongside Highland Park High School |
147 |
| 29 |
Zion Cloud Solutionszionclouds.com
Leading technology firm offering robust digital solutions including cloud services, digital transformation, data analytics, AI & ML, security, and staffing solutions Transforming visions into reality |
116 |
| 30 |
Coast To Coast Logisticscoasttocoastlogistics.com
Shipping firm in Lincolnshire, Illinois offering a full range of logistics services including expedited, dry van, temperature-controlled, and intermodal freight for various industries |
107 |
| 31 |
Scarlett Hotel Groupscarletthotelgroup.com
Hospitality management company prioritizing team member experience for superior customer service and organic profitability, led by respected industry founders |
79 |
| 32 |
Versay Solutionsversay.com
The company provides conversational speech solutions to help businesses improve customer service, automate calls, and enhance the overall caller experience |
31 |
| 33 |
Turner Acceptance Corp.turneracceptance.com
A consumer finance company in Chicagoland specializing in personal loans, financing, and personalized service to auto dealers and merchants |
30 |
| 34 |
The Lerner Group at Hightowerlerner.hightoweradvisors.com
A team of experienced wealth managers offering personalized investment strategies for individuals, foundations, and retirement plans, emphasizing long-term growth and risk management |
26 |
| 35 |
Surgalignxtantmedical.com
A global medical technology company focused on advancing surgical care through innovative solutions for superior clinical and economic outcomes worldwide |
23 |
| 36 |
ARA interactivearainteractive.com
This company helps businesses establish their brand presence, acquire new customers, and succeed through effective sales and marketing strategies |
7 |
| 37 |
M and A Constructionmandaconstruction.us
Local construction company in southeast NH specializing in high quality kitchen and bath remodels, led by an experienced carpenter with 18+ years in the industry |
3 |
Turn this list into pipeline
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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 Oct 24, 2026.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668