The 38 largest companies in Trenton (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	State of New Jersey nj.gov State government ensures protection, security, and benefits for residents through executive, legislative, and judicial branch responsibilities.	Government Administration	🇺🇸 Trenton	11,152	1776
2	New Jersey Courts njcourts.gov The New Jersey Judiciary oversees the Supreme Court, Superior Court, Tax Court, and municipal courts, providing technical support, training, and information systems development	Administration of Justice	🇺🇸 Trenton	3,881	1947
3	Capital Health (US)capitalhealth.org Provider of progressive patient care with exceptional staff and advanced technology Offering hospital services, outpatient facilities, and specialty care practices in the region	Hospitals and Health Care	🇺🇸 Trenton	2,343	n/a
4	NJ Department of Environmental Protection nj.gov The company is a state agency in New Jersey focused on environmental protection, conservation, managing natural resources, and solving pollution problems	Government Administration	🇺🇸 Trenton	1,595	1970
5	New Jersey Department of Children and Families nj.gov A government service organization in New Jersey that offers programs and supports to enhance family well-being	Government Administration	🇺🇸 Trenton	1,525	2006
6	New Jersey Department of Labor & Workforce Development nj.gov Provider of employment services, unemployment insurance, disability insurance, labor standards enforcement, labor market information, vocational rehabilitation, and workers' compensation in New Jersey	Government Administration	🇺🇸 Trenton	1,453	n/a
7	NJ Department of Health nj.gov Public health leader in New Jersey, dedicated to protecting the public's health, promoting healthy communities, and enhancing healthcare quality	Government Administration	🇺🇸 Trenton	1,370	n/a
8	Trenton Board of Education/Trenton Public School District trentonk12.org Educational institution focused on empowering students to graduate with a vision, motivation, and readiness for college or career success	Education Administration Programs	🇺🇸 Trenton	1,160	n/a
9	New Jersey Department of Corrections nj.gov A law enforcement agency in New Jersey with nine correctional facilities, focused on public safety, rehabilitation, and successful reintegration of individuals	Law Enforcement	🇺🇸 Trenton	866	n/a
10	Thomas Edison State University tesu.edu Online education leader offering flexible, high-quality degree programs for self-directed adults, with options such as online courses, credit transfer, and prior learning assessment	Higher Education	🇺🇸 Trenton	728	1972
11	New Jersey Attorney General's Office nj.gov The New Jersey Attorney General's Office provides legal advice, prosecutes criminals, protects civil rights, consumers, and regulates industries for a safe environment	Government Administration	🇺🇸 Trenton	686	1949
12	Mercer County Administration mercercounty.org Regional government entity in Mercer County, NJ that aims to improve quality of life through accessible services, infrastructure, education, and recreation for residents	Government Administration	🇺🇸 Trenton	624	n/a
13	City of Trenton trentonnj.org Managing ten departments and twelve hundred employees to provide public safety, health, housing, and infrastructure services for eighty-five thousand residents in Central Jersey.	Government Administration	🇺🇸 Trenton	562	1792
14	New Jersey Economic Development Authority (NJEDA)njeda.gov The company drives economic growth in New Jersey through initiatives that create jobs, strengthen communities, and improve quality of life	Financial Services	🇺🇸 Trenton	542	1974
15	New Jersey Office of the Public Defender nj.gov Statewide legal services organization in New Jersey providing criminal defense for indigent residents, along with representation in abuse/neglect, parental rights, and mental health cases	Legal Services	🇺🇸 Trenton	485	1967
16	New Jersey Department of Education nj.gov Supporting schools, educators, and districts in New Jersey to provide equitable access to high-quality education for 14 million students	Education Administration Programs	🇺🇸 Trenton	477	n/a
17	New Jersey Department of Community Affairs nj.gov State agency providing guidance, financial support, and technical assistance to improve quality of life in New Jersey for local governments, organizations, businesses, and individuals	Government Administration	🇺🇸 Trenton	452	1967
18	Thomas Edison State University tesu.edu Providing flexible online education for adults with 100+ areas of study, transfer credit options, and convenient schedules to balance work and family responsibilities	Higher Education	🇺🇸 Trenton	401	1972
19	TerraCycle terracycle.com A company pioneering recycling solutions for non-curbside items, transforming them into raw material for new products, including outdoor furniture and playgrounds Join us in eliminating waste	Environmental Services	🇺🇸 Trenton	401	2001
20	Hibbert hibbert.com A leading integrated communications solutions provider specializing in industries such as Life Science, Semiconductor, and Telecommunications, offering global marketing support and technology-driven delivery services	Advertising Services	🇺🇸 Trenton	371	1881
21	New Jersey Education Association (NJEA)njea.org A diverse organization in New Jersey striving for excellence in public education through democratic practices and creating optimal learning environments	Education Administration Programs	🇺🇸 Trenton	328	1853
22	New Jersey Department of the Treasury nj.gov Management and oversight of New Jersey's fiscal resources including budget, pensions, taxes, business registration, and investments for State employees	Government Administration	🇺🇸 Trenton	327	n/a
23	Jim's Formal Wear, Inc jimsformalwear.com A trusted supplier of tuxedos and suits since 1964, serving 4,500 retailers nationwide and offering rental services for weddings, proms, and special events	Wholesale	🇺🇸 Trenton	322	1964
24	Catholic Charities, Diocese of Trenton catholiccharitiestrenton.org A private nonprofit offering mental health, social, and crisis services for individuals and families impacted by trauma and adversity, using evidence-based interventions	Individual and Family Services	🇺🇸 Trenton	240	1913
25	New Jersey Housing and Mortgage Finance Agency nj.gov Dedicated to increasing availability of safe, affordable housing in New Jersey, serving families, first-time homebuyers, seniors, and individuals with disabilities	Government Administration	🇺🇸 Trenton	236	1984
26	Rees Scientific reesscientific.com A provider of automated monitoring systems for various industries, ensuring critical parameters and equipment are monitored accurately and compliant with regulations	Appliances, Electrical, and Electronics Manufacturing	🇺🇸 Trenton	208	1982
27	NJ Department of Education, Office of Fiscal Accountabilty and Compliance state.nj.us The Office of Fiscal Accountability and Compliance oversees the supervision and investigation of schools in New Jersey receiving support from federal and state appropriations	Government Administration	🇺🇸 Trenton	183	n/a
28	Hamilton Township hamiltonnj.com Provides municipal services, governance, and administration to the residents of Hamilton TownshipEnsures efficient operation and maintenance of public services	Government Administration	🇺🇸 Trenton	181	n/a
29	Critical Response Group crgplans.com This company enhances public safety by creating visual emergency response tools based on military special operations lessons, and conducts exercises to test plans	Public Safety	🇺🇸 Trenton	178	n/a
30	Capstone Logistics capstone-logistics.net A logistics company in North Texas supports the construction industry by hauling rock, sand, and gravel with a focus on reliability	Construction	🇺🇸 Trenton	173	2016
31	New Jersey Department of Agriculture nj.gov Agricultural department in New Jersey promoting local agriculture, seafood, and equine industry, providing education, and ensuring quality of life	Government Administration	🇺🇸 Trenton	162	n/a
32	New Jersey Division of Taxation nj.gov Administers tax laws uniformly, equitably, and efficiently to maximize state revenues and support public services while promoting voluntary compliance and economic growth	Government Administration	🇺🇸 Trenton	157	1976
33	Infinity Flight Group, LLC infinityflightgroup.com An experienced aviation services business offering top-quality flight training, state-of-the-art facilities, new aircraft, and comprehensive programs for aspiring pilots and aviation enthusiasts	Airlines and Aviation	🇺🇸 Trenton	154	2014
34	Loop exploreloop.com Platform offering reusable, durable packaging for everyday essentials in partnership with leading brands to reduce single-use waste.	Consumer Goods	🇺🇸 Trenton	154	2019
35	Riverside Nursing and Rehabilitation Center The company provides skilled nursing care, rehabilitation, and medical services for various conditions, ensuring personalized care and smooth transitions for patients	Hospitals and Health Care	🇺🇸 Trenton	150	2012
36	STEEL TOOL & ENGINEERING CO.steeltool.com Specializing in components for aviation, space, and defense industries, this company offers a complete manufacturing service including sheet metal forming, assembly, welding, and machining	Aviation and Aerospace Component Manufacturing	🇺🇸 Trenton	50	1952
37	EIT Consulting eitconsulting.com A consulting firm and creative agency specializing in IT solutions to help businesses innovate and adapt for long-term success	IT Services and IT Consulting	🇺🇸 Trenton	13	n/a
38	Zytron Control Products, Inc.zytron.com An Electrical and Electronic Manufacturing company in Trenton, New Jersey, specializing in control products for various industries	Appliances, Electrical, and Electronics Manufacturing	🇺🇸 Trenton	12	1985

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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