| # | Company | Employees |
|---|---|---|
| 1 |
Centurion Healthteamcenturion.com
A leading healthcare provider specializing in serving special populations, with a focus on correctional healthcare services for nearly 275,000 incarcerated individuals |
2,817 |
| 2 |
QTS Data Centersquantumfiber.com
Provider of data center solutions with over 9 million sq ft of space in North America Offers secure infrastructure, connectivity, and premium customer service |
2,591 |
| 3 |
HALO Branded Solutionshalo.com
Global leader in branded merchandise, uniform programs, and recognition/incentive solutions, specializing in connecting brands with customers, employees, and critical audiences worldwide |
2,120 |
| 4 |
Wahl Clipper Corporationwahl.com
The company is a global leader in designing and manufacturing high-quality hair clipping, trimming, and personal care products for various markets worldwide |
1,351 |
| 5 |
JK Moving Servicesjkmoving.com
The company provides residential, commercial, international, and government moving services with a focus on customer satisfaction, efficiency, and professionalism |
873 |
| 6 |
ORBCOMMorbcomm.com
A pioneer in IoT technology, ORBCOMM helps customers optimize industrial operations and make data-driven decisions for a more sustainable future worldwide |
869 |
| 7 |
REI Systemsreisystems.com
Providing innovative technology solutions to federal, state, local, and nonprofit organizations for improved decision-making and streamlined processes. |
862 |
| 8 |
Cuisine Solutionscuisinesolutions.com
Global leader in sous-vide cooking, offering innovative, scalable solutions and high-quality ready-to-eat products for chefs and consumers. |
850 |
| 9 |
Centrocentrocdx.com
A multinational provider of customer contact solutions, business process management, and healthcare services with a focus on investing in people for success |
845 |
| 10 |
CGH Medical Centercghmc.com
Progressive acute care facility offering inpatient and outpatient services, diagnostic imaging, specialized departments, clinics, and an emergency department in Northern Illinois |
826 |
| 11 |
Cynet Healthcynethealth.com
Top-rated travel healthcare staffing specialists providing workforce solutions for over seven thousand hospitals and healthcare facilities with ten thousand jobs available nationwide. |
823 |
| 12 |
Cynet Systemscynetsystems.com
A top talent supplier in the Washington DC Metro Area, specializing in staffing and recruiting for various industries across North America |
707 |
| 13 |
NeST Technologiesnesttech.com
A global technology services company offering custom software, hardware development, embedded systems, automation, consumer electronics, security solutions, and network management across various industries |
533 |
| 14 |
Cynet Groupengine.blehcourt.com
A Minority Owned staffing company headquartered in the Washington DC Metro Area, providing optimized staffing solutions with a large consultant network nationwide |
388 |
| 15 |
Geoquest USAgeoquest-group.us
Civil engineering design and materials supplier specializing in innovative MSE retaining walls, arch bridges, tunnels, sound walls, and related structures |
386 |
| 16 |
N.E.W. Customer Service Companies, Incnewcorp.com
A technology company offering assistance with replacing, fixing, and solving issues related to electronics and devices to keep customers connected |
365 |
| 17 |
Antra, Inc.antra.com
A technology services provider helping businesses bridge gaps, support growth, enhance IT capabilities, and deliver high-quality & cost-effective solutions |
343 |
| 18 |
Advantage One Tax Consultingaotax.com
A team of experienced tax professionals providing comprehensive tax, accounting, and financial services for individuals, businesses, and non-profit entities in the US |
327 |
| 19 |
Teksky LLCteksky.com
The company offers specialized services in various sectors including healthcare, legal services, construction, finance, and entertainment across several countries |
326 |
| 20 |
Bodhtreebodhtree.com
A global IT services provider specializing in Cloud CRM, Analytics, Product Engineering, and Enterprise Services for various industries worldwide |
324 |
| 21 |
mindSHIFT, a wholly owned subsidiary of Ricoh USA, Inc.mindSHIFT.com
A leading IT outsourcing and cloud services provider dedicated to delivering IT Peace of Mind for businesses of all sizes |
314 |
| 22 |
ASSYSTassyst.net
Agile IT solutions provider focused on streamlining processes, delivering actionable insights, and improving operations through CMMI, Agile Framework, and innovation |
290 |
| 23 | 264 | |
| 24 |
Axius Technologies Inc.axiustek.com
Global end-to-end recruitment solutions provider, specializing in placing talent across industries and technologies, achieving rapid growth and client satisfaction worldwide |
233 |
| 25 |
Dedronededrone.com
Global leader in smart airspace security using AI/ML technology to detect, track, identify, analyze, and mitigate drone threats for various customers worldwide |
231 |
| 26 |
Abrakadoodle, Inc.abrakadoodle.com
An award-winning multi-arts program for kids offering art classes, camps, parties, and events to spark creativity and build confidence |
190 |
| 27 |
Alpha Corporationalphacorporation.com
A woman-owned construction consulting firm providing engineering, management, and technology services for building, transportation, and infrastructure projects Vision for quality and innovation |
186 |
| 28 |
Core Onecoreone.com
Specializing in national security, we provide advanced analytical, operational, and technical solutions to complex challenges through trusted partnerships and superior advice |
183 |
| 29 |
Frontpointfrontpointsecurity.com
A technology and service company that revolutionized home security with DIY systems, exceptional customer service, and cutting-edge products for security-first smart homes |
180 |
| 30 |
Easterns Automotive Groupeasterns.com
Family-owned used car dealership in the DMV area, offering over 30 years of experience and over 150,000 vehicles sold |
179 |
| 31 |
CapRelocaprelo.com
Global employee relocation and assignment management services Streamlining relocation complexities through technology for companies and employees Comprehensive services include visa, move, and cultural training |
172 |
| 32 |
Divine Mercy Universitydivinemercy.edu
A Catholic graduate school offering psychology and counseling degrees with a focus on a Catholic understanding of the person, marriage, and family |
171 |
| 33 |
CCCIcccincorp.com
Leading provider of design-build, cabling, wireless, security, and data center solutions nationwide with over 40 years of experience and industry certifications |
159 |
| 34 |
Sauk Valley Banksaukvalleybank.com
A community bank focused on personalized service and products for customers, while giving back to the community and building strong relationships |
155 |
| 35 |
Marathon TSmarathonts.com
Provides winning IT solutions for government and industry, offering digital solutions in cloud, mobile, big data, IoT, cybersecurity, and advanced analytics. |
155 |
| 36 |
Northstrat Incorporatednorthstrat.com
Provides strategic IT solutions to US Government agencies, including Intelligence, Defense, and Law Enforcement, leveraging software development and DevSecOps for mission-critical systems. |
151 |
| 37 |
Comprobase, Inc.comprobase.com
A cloud-managed services and systems integrator offering consulting and technology solutions for various SaaS applications, headquartered in Northern Virginia |
100 |
| 38 |
GTS Groupgtsgroup.com
A global logistics provider offering air and sea transport, specialized warehousing, project cargo management, and supply chain solutions with ISO certification |
67 |
| 39 |
Assurety Consulting & Solutions Inc.assuretyconsulting.com
A consulting company solving complex business problems with expertise in professional services, analytics, ML, fraud management, and innovative software solutions |
60 |
| 40 |
MATSYS Inc.matsys.com
A full-service provider specializing in advanced materials and alloy development, offering expertise and prototyping services to defense, energy, and pharmaceutical industries |
41 |
| 41 |
SSTechLLCsstechllc.com
This company focuses on building unique relationships with clients by providing innovative IT solutions, maintaining high standards, and prioritizing customer and employee needs |
30 |
| 42 |
P&P Industries, Inc.ppind.com
A family-owned custom injection molder specializing in high-quality plastic parts, known for innovation, rigorous quality systems, and advanced manufacturing technologies |
29 |
| 43 |
UDPlatforms Inc.udplatforms.com
A startup offering innovative solutions for governments, industries, and nonprofits to enhance customer service, empower employees, and optimize operations through digital transformation |
18 |
| 44 |
Nelson Enterprise Technology Services (NETS)nets-us.com
An Enterprise Infrastructure Consulting Company specializing in IT services for government and enterprise clients worldwide, focused on utilizing emerging technologies for improvement |
18 |
| 45 |
Synchronisys, Incsynchronisys.com
A technology consulting firm dedicated to delivering quality solutions aligned with clients' needs, with a focus on excellence and professionalism |
16 |
| 46 |
Metanoia Solutions Incmetanoiasolutions.com
A solution-driven software company providing quality IT services, with a focus on execution excellence, diverse IT solutions, technology expertise, and cost-effective solutions |
12 |
| 47 |
Vigna Solutions, Inc.vignasolutions.com
Specializing in software development and IT solutions for Commercial and Federal sectors, emphasizing web and mobile development, DevOps, and Agile methodologies |
11 |
| 48 |
ProSource of Dullesprosourcewholesale.com
One-stop home improvement shop offering a wide selection of kitchen, bath, and flooring options for professionals, contractors, designers, and homeowners |
9 |
| 49 |
Octantoctant.com
It provides business development lifecycle software that enhances collaboration and optimizes performance for proposal and capture management teams. |
8 |
| 50 |
Connected Ventures (CV)connectedventures.net
Investing in people, processes, and technology to drive digital democratization in various industries through disruptive products and services |
6 |
| 51 |
Blue Standard Inc. | Innovations for Healthier, Safer, & Sustainable CPGbluestandardinc.com
A sustainable material science company specializing in eco-friendly manufacturing, creating premium consumer goods from renewable and recycled resources with innovative production methods |
6 |
| 52 |
M&D Home Repairs and Remodeling LLCmdhomerepairsllc.com
A locally-operated Home Improvement Company focused on quality service and customer satisfaction, dedicated to helping clients achieve their dream homes |
3 |
| 53 |
Vachi InfoTech Inc.vachiinfotech.com
This company provides IT consulting services, customized solutions, and support to help businesses succeed by addressing all IT needs efficiently |
3 |
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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