| # | Company | Employees |
|---|---|---|
| 1 |
Planet Fitnessplanetfitness.com
A fast-growing fitness franchisor with over 2,400 locations, dedicated to providing affordable, high-quality fitness experiences in a Judgement Free Zoneยฎ |
18,335 |
| 2 |
Hampton City Schoolsteachhampton.com
An education institution in Hampton, VA, serving 19,500 students in 29 schools, dedicated to providing diverse learning experiences and supporting teacher development |
2,833 |
| 3 |
Hampton Universityhome.hamptonu.edu
Historically black university offering diverse technical, liberal arts, and graduate programs with a strong community and rich cultural heritage. |
2,008 |
| 4 |
Faneuil Inccontinuumgbl.com
This company offers business process outsourcing solutions including customer care and technical support, with a focus on representing clients' brands effectively |
1,904 |
| 5 |
NASA Langley Research Centernasa.gov
Pioneering aeronautics research center located in Hampton, Virginia, on the Chesapeake Bay, contributing to NASA's aerospace and science advancements |
1,714 |
| 6 |
City of Hamptonhampton.gov
Innovative coastal city in Virginia with award-winning schools, outdoor recreation, diverse entertainment, and a rich history of innovation and entrepreneurship |
1,062 |
| 7 |
Hampton Roads Transitgohrt.com
Regional provider of public transportation in Hampton Roads Virginia, operating bus routes, light rail, express commuter service, ferry service, ADA Paratransit, and commuter programs |
539 |
| 8 |
Analytical Mechanics Associatesama-inc.com
A long-standing company providing innovative engineering, math, and business solutions for government and commercial organizations using the latest technology and expertise |
453 |
| 9 |
Unitilunitil.com
A public utility company delivering natural gas and electricity in New England with a focus on safety, reliability, and community involvement |
437 |
| 10 |
Noblis MSDnoblis.org
A nonprofit subsidiary serving federal clients with scientific and technical excellence, impacting civil, defense, homeland security, and intelligence missions |
429 |
| 11 |
Hampton-Newport News Community Services Boardhnncsb.org
A provider of behavioral health services in Hampton and Newport News, VA, offering programs for individuals with mental illness, developmental disabilities, and substance use disorders |
419 |
| 12 |
Southern States LLCsouthernstatesllc.com
Provider of essential high voltage switching products and services for electric utilities in the US and Canada, ensuring a reliable power infrastructure |
397 |
| 13 |
Hampton Schoollinktr.ee
Established in 1557, Hampton School is an HMC Independent School for boys located in Richmond upon Thames, providing quality education |
359 |
| 14 |
ABCM Corporationabcmcorp.com
A leading Long Term Care provider with Skilled Nursing, Assisted Living, and Therapy services in Iowa, focusing on employee well-being and career growth opportunities |
354 |
| 15 |
EASTCONNeastconn.org
A non-profit regional educational service center providing high-quality, competitively priced educational services to member Boards of Education in northeastern Connecticut |
341 |
| 16 |
Registrar Corpregistrarcorp.com
Registrar Corp offers US FDA registration, compliance assistance, and US agent services for companies in various industries worldwide |
337 |
| 17 |
Sentara Careplex Hospitalsentara.com
Sentara Careplex Hospital in Virginia provides healthcare services at their location in Hampton, including medical treatment, surgery, and emergency care |
310 |
| 18 |
Patient Advocate Foundationpatientadvocate.org
A nonprofit organization founded in 1996, providing free support to patients with chronic illnesses to access care, maintain financial stability, and protect employment |
284 |
| 19 |
Threat Tec, LLCthreattec.com
Specializing in threat analysis, wargaming, and simulations, we provide comprehensive insights to help clients stay ahead in global security challenges |
249 |
| 20 |
United Bank Cardunitedbankcard.com
A leading payment processor in the US, handling merchant accounts for over 110,000 businesses and processing $9 billion annually, known for innovation and outstanding customer service |
213 |
| 21 |
SIAA โข The Agent Alliancesiaa.com
National network of independent insurance agents with $142+ billion in written premium, providing competitive choices and profit opportunities for member agencies |
206 |
| 22 |
Old Point National Bank, A Division of TowneBankoldpoint.com
A family of organizations providing financial services including banking, trust, mortgage, and insurance with a focus on community and customer service |
203 |
| 23 |
Homeland Security Solutions, Inc. (HSSI)hssi.com
A veteran-owned training, technology, and professional services company supporting law enforcement and security needs worldwide with a commitment to service |
190 |
| 24 |
Winnacunnet High Schoolwinnacunnet.org
Public four-year high school providing traditional academics, career technical education, and dual-enrollment college credits for students in four New Hampshire seacoast towns. |
174 |
| 25 |
New Horizons Regional Education Centersnhrec.org
Regional education center in Virginia serving 1,500 public school students and 1,200 adult learners annually, aiming to inspire and empower through education |
157 |
| 26 |
COX Transportation Services, LLC.truckingforamerica.com
An experienced freight carrier and property broker serving the US and parts of Canada, offering irregular route transportation for general commodities |
41 |
| 27 |
Synapse Technologies, Inc.synapseit.co.in
A technology company integrating office technologies and process outsourcing, providing comprehensive solutions to corporate, government, and municipal entities |
9 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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