The 31 largest companies in Danbury (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Nuvance Health nuvancehealth.org Nonprofit hospital system offering healthcare services in the Hudson Valley and western Connecticut through award-winning hospitals, outpatient services, and medical practices	Hospitals and Health Care	🇺🇸 Danbury	7,335	n/a
2	Praxair, Inc - a Linde Company lindeus.com A global leader in industrial gases and engineering, providing high-quality gases, technologies, and services to diverse markets while promoting sustainability and productivity	Chemical Manufacturing	🇺🇸 Danbury	6,549	n/a
3	IMS Health iqvia.com Provides healthcare data, analytics, and technology solutions to improve clinical, commercial, and real-world outcomes in the life sciences industry.	Hospitals and Health Care	🇺🇸 Danbury	4,675	1954
4	Ethan Allen Global, Inc.ethanallen.com Innovative furniture retailer with a wide range of styles, offering customization options and environmentally sustainable products, emphasizing excellent service and community involvement	Retail	🇺🇸 Danbury	2,765	n/a
5	Cartus cartus.com Global leader in talent mobility and remote work solutions, providing corporate relocation services to organizations worldwide with a focus on small-to-Fortune 100 companies	Real Estate	🇺🇸 Danbury	2,612	1955
6	Linde Gas & Equipment lindedirect.com A trusted provider of industrial gases, welding supplies, cutting machines, and automation, offering solutions to reduce costs and increase productivity	Chemical Manufacturing	🇺🇸 Danbury	1,552	n/a
7	Danbury Hospital nuvancehealth.org A not-for-profit community hospital providing convenient access to exceptional care, committed to improving health and well-being through personalized services and wellness programs	Hospitals and Health Care	🇺🇸 Danbury	1,466	n/a
8	Western Connecticut State University wcsu.edu WCSU offers a range of degree programs in a supportive environment with small class sizes and dedicated faculty to inspire success	Higher Education	🇺🇸 Danbury	1,225	1903
9	Waterworks waterworks.com A company specializing in bath & kitchen products, offering expertise, service, and innovation with a rich heritage since 1925 Join for rewarding opportunities	Design Services	🇺🇸 Danbury	935	1978
10	BlueCrest bluecrestinc.com Provides comprehensive data-through-delivery technology solutions, including inkjet printers, inserters, sorters, parcel automation, postal optimization, and productivity improvement software, with global service support.	Communications Equipment Manufacturing	🇺🇸 Danbury	901	2018
11	Alpha Epsilon Phi aephi.org A sorority founded in 1909, promoting sisterhood, selfless service, intellectual growth, and personal development among its members	Executive Offices	🇺🇸 Danbury	845	1909
12	MannKind Corporation mannkindcorp.com This company focuses on developing and commercializing therapeutic products and devices for endocrine and orphan lung diseases, aiming to improve patients' lives	Pharmaceutical Manufacturing	🇺🇸 Danbury	833	1991
13	Western Connecticut Health Network (WCHN)nuvancehealth.org A healthcare network providing personalized care through three hospitals, a large medical group, and home care services to local communities	Hospitals and Health Care	🇺🇸 Danbury	794	n/a
14	Jcpenney Styling Salon A styling salon located in Danbury Fair Mall, Connecticut, specializing in beauty and hair services for customers in the area	Real Estate	🇺🇸 Danbury	517	n/a
15	FuelCell Energy fuelcellenergy.com Specializing in efficient, affordable, and clean energy solutions, this company designs, manufactures, and operates megawatt-scale fuel cell systems for utilities and industrial power users worldwide	Renewable Energy Power Generation	🇺🇸 Danbury	467	1969
16	Danbury Public Schools CT danbury.k12.ct.us A diverse and inclusive city in northern Fairfield County offering transformational learning experiences through its public schools and community partnerships	Primary and Secondary Education	🇺🇸 Danbury	424	n/a
17	ARKA Group, LP arka.org Provides world-leading technologies and services for warfighters, including advanced optical technologies, ground processing, analytics, and next-generation space solutions, with 60-year legacy.	Defense and Space Manufacturing	🇺🇸 Danbury	361	n/a
18	Union Savings Bank - CT unionsavings.com A $30 billion mutual bank in Connecticut offering banking, mortgage, investment, and insurance products, dedicated to serving customers and communities	Banking	🇺🇸 Danbury	348	1866
19	Meyer Jabara Hotels meyerjabarahotels.com A hospitality company owning and operating hotels in 14 states, offering a diverse portfolio including major brands and creating a positive culture for associates and guests	Hospitality	🇺🇸 Danbury	179	1977
20	Dental Associates of CT dentalassociates.us A multi-specialty dental group practice in Connecticut providing state-of-the-art dental care with expertise, compassion, unique company culture, and continuous improvement	Medical Practices	🇺🇸 Danbury	176	1971
21	Family & Children's Aid, Inc.fcaweb.org A non-profit organization in Connecticut providing mental health services for children, adolescents, and families through various programs and locations in western CT	Mental Health Care	🇺🇸 Danbury	170	n/a
22	SPE: Inspiring Plastics Professionals 4spe.org Global network supporting plastics professionals through events, training, knowledge sharing, and community engagement to advance careers and industry solutions.	Plastics Manufacturing	🇺🇸 Danbury	156	1942
23	Barden Corporation, The schaeffler.us A leading manufacturer of precision ball bearings for aerospace, space, machinery, and medical applications Also provides repair services with global facilities	Aviation and Aerospace Component Manufacturing	🇺🇸 Danbury	154	1942
24	Tech Air techair.com A leading provider of industrial, medical, and specialty gases, along with essential equipment and services, with a strong focus on family values and employee development	Wholesale	🇺🇸 Danbury	153	1935
25	Danbury Mission Technologies arka.org Cutting-edge company working on mission-critical projects to shape safety worldwide Specializes in Precision Optics, Advanced Programs, Space Systems, and Defense Systems	Defense and Space Manufacturing	🇺🇸 Danbury	151	n/a
26	Balance, Inc.balanceink.com A leading luxury packaging design and production company known for creativity, innovation, and attention to detail, serving high-end cosmetics and fragrance brands	Packaging and Containers Manufacturing	🇺🇸 Danbury	37	2000
27	Partner Fr8 partnerfr8.com A premium logistics provider in Texas, specializing in handling oversize loads with precision, tailored solutions, and unwavering commitment to partners	Transportation, Logistics, Supply Chain and Storage	🇺🇸 Danbury	34	n/a
28	Wieland Dental Systems Inc.Wieland-Dental-Systems.com A leading German company specializing in dental prosthetics, restorative materials, and CAD/CAM digital technology, with a focus on innovation and global distribution	Medical Equipment Manufacturing	🇺🇸 Danbury	12	1871
29	MasTrack.com (Mobile Asset Solutions)mastrack.com Established in 1999, this company provides reliable GPS tracking solutions for museums, auction houses, collectors, and small businesses to monitor vehicles and driver behavior in real time	Wireless Services	🇺🇸 Danbury	9	1999
30	The Brokerage of New England brokeragene.com A full-service real estate brokerage firm serving Fairfield County and Candlewood Lake area, specializing in residential and commercial sales and leases	Real Estate	🇺🇸 Danbury	6	2013
31	Optimization Partners optprt.com Specializing in data analytics and management solutions, our company helps Fortune 500 companies make data-driven decisions for marketing, sales, PR, and executive leadership	Market Research	🇺🇸 Danbury	3	2012

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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