| # | Company | Employees |
|---|---|---|
| 1 |
Tribune Mediatribunemedia.com
Media company with TV and digital properties, including local stations, national networks, studios, digital platforms, and real estate investments |
4,122 |
| 2 |
Tribune Publishing Companytribpub.com
Media company with award-winning journalism roots, operating local and national brands, offering integrated marketing, digital solutions, and diverse career opportunities |
2,890 |
| 3 |
American Marketing Associationama.org
Provides marketing and sales professionals with industry insights, professional certification, academic journals, training, and conferences through a global community. |
2,669 |
| 4 |
American Medical Associationama-assn.org
Providing essential resources and advocacy to support physicians, residents, and medical students throughout their medical careers and improve public health. |
2,513 |
| 5 |
American College of Surgeonsfacs.org
Dedicated to improving surgical patient care worldwide with membership opportunities, quality programs, surgical registries, and education to enhance outcomes |
1,644 |
| 6 |
American Hospital Associationaha.org
National organization representing hospitals, health care networks, and patients Advocates for members in health policy, legislative debates, and regulatory matters Visit website for more information |
1,614 |
| 7 |
American Dental Associationada.org
Advocates for dentists, dental science, public oral health. Provides resources for professionals, researches, and champions public health initiatives. |
1,599 |
| 8 |
NUNYA LLCfnaround.com
A business consulting firm that helps clients with financial needs, growth strategies, partnerships, and gaining capital/resources for startups or joint ventures |
1,258 |
| 9 |
Big Ten Networklinktr.ee
An internationally distributed network covering the Big Ten Conference, providing 24/7 coverage of over 2,300 events for fans and alumni nationwide |
1,060 |
| 10 |
FanSidedfansided.com
FanSided is a rapidly growing network of fandom-focused sports, entertainment, and lifestyle sites with over 300 communities connecting passionate fans |
928 |
| 11 |
Modern Healthcaremodernhealthcare.com
Leading source of healthcare news, providing in-depth analysis and insights on industry events, trends, and research through various platforms for healthcare executives |
893 |
| 12 |
American Library Associationala.org
Advocacy and empowerment for libraries and workers, ensuring equitable information access and promoting professional standards and conduct. |
838 |
| 13 |
Chicago Tribune Media Groupchicagotribune.com
Provides diverse media and marketing solutions reaching millions monthly through newspapers, digital platforms, and niche regional publications in Chicago area. |
825 |
| 14 |
American College of Healthcare Executivesache.org
An organization advancing healthcare leadership excellence through lifelong learning, integrity, diversity, and inclusion, offering valuable knowledge, networking opportunities, and professional development |
734 |
| 15 |
The Second Citysecondcity.com
A premier brand in improv-based sketch comedy and education, offering theater, training centers, touring ensembles, corporate collaborations, and TV/film productions globally |
648 |
| 16 |
Legacy.comlegacy.com
A global leader in online obituaries, offering support services to newspapers and funeral homes, facilitating condolence messages and remembrances sharing |
647 |
| 17 |
NewsNationnewsnationnow.com
A national news and entertainment cable network providing unbiased news from diverse perspectives, reaching 75 million households in the US |
635 |
| 18 |
Home Health Care Newshomehealthcarenews.com
The company is a top source of information on the home health care industry, providing news and updates to professionals in the field |
611 |
| 19 |
Skilled Nursing Newsskillednursingnews.com
Leading source of information on the skilled nursing industry, providing valuable insights and news related to skilled nursing facilities and services |
542 |
| 20 |
Institute of Food Technologists (IFT)ift.org
Advancing food science globally to ensure safe, nutritious, and sustainable food supply through collaboration, innovation, and dedication to scientific integrity and progress |
525 |
| 21 |
ABA Journallinktr.ee
Leading magazine of the American Bar Association focused on legal trends, people, and finances Provides breaking legal news and monthly magazine for lawyers nationwide |
520 |
| 22 |
Encyclopaedia Britannica, Inc.britannica.com
Provides digital encyclopedias, curriculum products, language courses, and professional training to students, lifelong learners, and professionals worldwide. |
461 |
| 23 |
The Oniontheonion.com
A Chicago-based digital media company with multiple publications, creative services, production studios, and a large online following for comedy content |
459 |
| 24 |
Chicago Sun-Timeschicago.suntimes.com
A Chicago-based media company providing relevant news coverage to the community, using multi-platform production and engaging with readers and advertisers |
443 |
| 25 |
JAMAjamanetwork.com
An international peer-reviewed medical journal, part of the JAMA Network, publishing research articles for free access online to promote public health |
409 |
| 26 |
Weigel Broadcasting Co.weigelbroadcasting.com
A family-owned media company based in Chicago, Weigel Broadcasting operates national TV networks and local stations, providing compelling programming and innovation |
371 |
| 27 | 364 | |
| 28 |
Appraisal Instituteappraisalinstitute.org
This company is a leading professional association for real estate appraisers, promoting ethical practices, professional education, and advocacy programs |
345 |
| 29 |
EnsembleIQensembleiq.com
Business intelligence company in North America providing market expertise in retail, consumer goods, healthcare, and hospitality to help professionals make informed decisions |
243 |
| 30 |
WTTW/Chicago PBSwttw.com
A premier public media organization producing unique PBS Chicago television and digital content on a variety of channels and platforms |
190 |
| 31 |
Becker's Healthcarebeckershospitalreview.com
This company offers business news, analysis, and guidance for the healthcare industry through their portfolio of trade publications |
183 |
| 32 |
Betsperts Media & Technology Groupbetsperts.com
Crowdsourced platform offers sports gambling advice, social interaction, analytics, and pick tracking to help users make informed betting decisions |
30 |
| 33 |
The Southernthesouthernchicago.com
A lively bar offering Southern comfort food, dinner on weekdays, weekend brunch, and a rooftop patio for events, with late bar hours |
14 |
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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 2, 2026.
More company lists in Chicago
- The largest companies in Chicago 1,861
- Financial services firms in Chicago 212
- Financial Services companies in Chicago 185
- Education providers in Chicago 138
- SaaS companies in Chicago 132
- Consulting firms in Chicago 127
- IT Services and IT Consulting companies in Chicago 115
- IT services companies in Chicago 114
- Venture capital and private equity firms in Chicago 106
- AI companies in Chicago 100
- Hospitals and Health Care companies in Chicago 99
- Software Development companies in Chicago 97
- Manufacturers in Chicago 97
- Healthcare providers in Chicago 86
- Retail chains in Chicago 84
- Critical infrastructure operators in Chicago 74
- Publicly traded companies in Chicago 71
- Real Estate companies in Chicago 67
- Non-profit Organizations companies in Chicago 66
- Venture Capital and Private Equity Principals companies in Chicago 62
- Advertising Services companies in Chicago 56
- Marketing and communications agencies in Chicago 53
- Food and Beverage Services companies in Chicago 52
- Business Consulting and Services companies in Chicago 51
The same list elsewhere in United States
- Media companies and publishers in the United States 1,233
- Media companies and publishers in New York State 320
- Media companies and publishers in California 250
- Media companies and publishers in Florida 60
- Media companies and publishers in Illinois 52
- Media companies and publishers in Texas 43
- Media companies and publishers in Pennsylvania 33
- Media companies and publishers in New Jersey 32
- Media companies and publishers in Alabama 31
- Media companies and publishers in Massachusetts 31
- Media companies and publishers in Virginia 31
- Media companies and publishers in New York 304
- Media companies and publishers in Los Angeles 57
- Media companies and publishers in San Francisco 56
- Media companies and publishers in Washington 52