| # | Company | Employees |
|---|---|---|
| 1 |
DXC Technologydxc.com
It assists global companies in managing critical systems, modernizing IT, optimizing data, and ensuring security across various cloud environments. |
90,597 |
| 2 |
Loudoun County Public Schoolslcps.org
Empowering students to make meaningful contributions through quality education, critical thinking, and promoting equity and inclusion in a diverse community |
7,527 |
| 3 |
SSP Americaamerica.foodtravelexperts.com
Specializing in airport dining, we bring authentic and unique restaurants that capture the local essence, providing a taste of place for travelers |
2,708 |
| 4 |
Washington Commanderscommanders.com
Professional American football team in Washington, DC area, competing in the NFL with a history of championships and divisional titles |
1,034 |
| 5 |
MBO Partnersmbopartners.com
A direct sourcing platform connecting independent professionals and microbusiness owners with enterprise organizations, advancing the independent economy and changing the way of working |
997 |
| 6 |
Pearson Smith Realtypearsonsmithrealty.com
Real estate company setting new standards of professional service through licensed Realtors in VA, MD, DC, and WV Strong values, teamwork, and focus on customer satisfaction |
763 |
| 7 |
Telos Corporationtelos.com
Empowering and protecting organizations with continuous security assurance for individuals, systems, and information through cybersecurity, cloud, and enterprise security solutions. |
665 |
| 8 |
CPGcpgbeyondthecloud.com
This company provides design, construction, and analytics-driven operations solutions for conventional, hyperscale, and edge data centers in North America |
602 |
| 9 |
Century 21 Redwood Realtyc21redwood.com
Premiere Real Estate firm in the mid-Atlantic region with cutting-edge technology platforms, award-winning relocation services, and thirteen offices servicing the area |
505 |
| 10 |
Hanley Energyhanleyenergy.com
Global innovators in critical power and energy management solutions, offering design, build, commissioning, and advisory services to ensure secure, reliable power for data centers |
438 |
| 11 |
Independent Project Analysisipaglobal.com
An organization founded in 1987, specializing in benchmarking, research, and consulting for capital projects to enhance value and ensure safety |
438 |
| 12 |
Zillion Technologies, Inc.zilliontechnologies.com
Provides innovative technology, services, and consulting across digital transformation, AI/ML, cloud, cybersecurity, and IoT for various industries and government entities. |
389 |
| 13 |
The Providencia Grouptheprovidenciagroup.com
The company is dedicated to creating positive change in communities, supporting underserved populations globally, and promoting environmental sustainability through impactful projects |
382 |
| 14 |
Curtiss-Wright Defense Solutionscurtisswrightds.com
A leading supplier of rugged electronics products for defense, aerospace, and security applications, specializing in innovative solutions for harsh conditions |
340 |
| 15 |
matchboxmatchboxrestaurants.com
Casual dining experience offering 369 mini burgers, hot pizzas, and chef-crafted dishes in a warm, welcoming atmosphere with friendly staff |
253 |
| 16 |
DTC | A Codan Companydtccodan.com
Providing cutting-edge communication technologies for military, law enforcement, governments, robotics, and system integrators to achieve mission critical operations in challenging environments globally |
229 |
| 17 |
Asta Crs Incastacrs.com
An innovative IT company providing top staffing and consulting services, specializing in improving productivity, profitability, and shareholder value for clients |
218 |
| 18 | 197 | |
| 19 |
Woofie'sownawoofies.com
Innovative pet care business offering combined pet sitting, dog walking, and mobile pet spa services to drive business growth and recurring revenue streams |
190 |
| 20 |
Infinitiveinfinitive.com
Data and AI consultancy specializing in modernizing, monetizing, and operationalizing data for global brands to drive results through insights and innovation |
183 |
| 21 |
CIS Securecissecure.com
A trusted integrator of secure communication and collaboration technology solutions, pushing boundaries of innovation to create solutions for defense and intelligence communities |
183 |
| 22 |
DSI Techdsitech.com
DSI Tech provides secure, innovative, and cost-effective IT solutions and services for government, education, and commercial clients nationwide since 1991 |
179 |
| 23 |
Christian Fellowship Churchcfcwired.org
An independent church in Ashburn, VA, welcoming people from all backgrounds to become followers of Christ through biblical teaching and lively worship |
175 |
| 24 | 169 | |
| 25 |
Frameworkframeworkconsulting.com
Specializing in K-12 EdTech solutions, we offer tailored workforce management and strategic services to help schools adapt and scale effectively |
165 |
| 26 |
Main Street Home Loansmainstreethomeloans.com
This company provides personalized and consultative home loan services tailored to each client's financial goals, helping them find the right mortgage |
163 |
| 27 |
Zwiesel Fortessa Americas LLCzwieselfortessa.us
An integrated designer, developer, and marketer of commercial and consumer tableware, offering high-quality products and exceptional customer service globally |
157 |
| 28 |
Sapphire Software Solutions Incsapphiresoftwaresolutions.com
Leading provider of IT recruitment & staffing services, connecting top talent with premier companies in the industry |
157 |
| 29 |
PVK Corporationpvkc.com
Providing cost-effective IT consulting and services, specializing in E-Business solutions for mid-size and Fortune 500 companies since 2002 |
153 |
| 30 |
Venturesathiventuresathi.com
VentureSathi provides tailored services including contact center, bookkeeping, data analytics, software development, process consulting, automation, business intelligence, and back-office operations |
101 |
| 31 |
Mindseekermindseeker.com
Delivers recruitment and workforce solutions for diverse organizations ranging from startups to large enterprises through specialized staffing services and trusted professional partnerships. |
94 |
| 32 |
Integrated Insurance Solutionsintegrated-usa.com
Specializing in insurance products and services, we provide personalized assistance for all insurance needs, including business, home, auto, employee benefits, and financial insurance |
91 |
| 33 |
Unacastunacast.com
A location insights company empowering retailers, real estate professionals, and investors to make data-driven decisions using proprietary data models and analytics |
76 |
| 34 |
Techaxis, Inctechaxisinc.com
An award-winning recruiting agency specializing in full-time hiring for strategic, sales, technology, and operational roles across various industries |
70 |
| 35 |
Metron Aviation - A Stratify Aerospace Companymetronaviation.com
A global leader in aviation software development, providing solutions for Air Navigation Service Providers, airlines, airports, and the US Federal government |
66 |
| 36 |
Vectronix Inc.vectronix.us
Global leader in electro-optical products and sensors, supporting government programs with US-based manufacturing and testing facilities, part of Safran Electronics & Defense |
61 |
| 37 |
Impaqximpaqx.com
Innovative digital solutions provider specializing in PXM, E-commerce Analytics, and industry-specific services to empower businesses for success in the digital age |
59 |
| 38 |
Sriven Technologies, LLCsriventech.com
A rapidly growing IT services company specializing in delivering intelligent technology solutions for global organizations, focusing on data, digital, connectivity, and security |
41 |
| 39 |
Extend Information Systems Inc.extendinfosys.com
Provide platforms for digital transformation, talent acquisition, and business growth Collaborate and innovate for impactful change and professional development |
39 |
| 40 |
palmiqpalmiq.com
Providing comprehensive technology consulting and app development services to government and commercial clients, focused on modernizing infrastructure for efficiency and innovation |
36 |
| 41 |
DotGov Solutions LLCdotgovsolutions.net
Full-service e-government consulting company providing process improvement and custom software solutions for government entities in emerging markets globally |
36 |
| 42 |
IntellectFaces, Incintellectfaces.com
A technology solutions company specializing in AI/ML, Digital Transformation, Agile/DevSecOps, Blockchain, Cloud Migration, and Salesforce services for Federal & Commercial clients |
33 |
| 43 |
Limbiklimbik.com
Cognitive AI company offering a platform to proactively identify information threats and optimize response options for governments, NGOs, and businesses |
26 |
| 44 |
DAVIS INFRASTRUCTUREdavisinfra.com
Providing critical power distribution and monitoring equipment and services in the Data Center Alley of Northern Virginia and Mid-Atlantic region, emphasizing uptime and reliability |
25 |
| 45 | 20 | |
| 46 |
Titan Grouptitansus.com
The company provides IT consulting and training services such as IT strategy development, architecture design, security support, custom software development, and cloud integration |
18 |
| 47 |
UV Technology Solutions Incuvtechsolutionsinc.com
A technology consulting firm providing efficient, affordable, and on-time solutions across various industries, specializing in transforming businesses through technology |
16 |
| 48 |
Blend Coffee Barblendcoffeebar.com
Community-focused coffee shop in Ashburn, VA offering locally roasted coffee, specialty drinks, wine/beer, food, baked goods, and hosting various events for residents and visitors |
14 |
| 49 |
Southport Services Groupperficient.com
Leading technology and management consulting firm offering digital experience, business optimization, and industry solutions to Global 2000 and enterprise customers |
13 |
| 50 |
Gravy Analyticsunacast.com
A location technology company founded in 2011, providing actionable intelligence to businesses by understanding human mobility to enhance sales, marketing, and operations |
13 |
| 51 |
Black Diamond Consulting Corporationbdcng.com
A small disadvantaged business in Northern Virginia offering engineering, consulting, systems engineering, test and evaluation, process improvement, logistics, and management consulting services |
11 |
| 52 |
MAC Design+Buildbuildwithmac.com
A full-service design/build firm specializing in residential remodeling and custom homebuilding in Northern Virginia, with a focus on creating beautiful, functional spaces |
9 |
| 53 |
The Martin Groupmartininvestinggroup.com
A partnership of technologists, capitalists, and philanthropists providing capital, financing, and expertise to early stage companies for growth and success |
8 |
| 54 |
Sayagyi Group Incsgi-inc.net
A global IT employment and recruitment firm specializing in IT outsourcing, bridging the gap between technology needs and qualified professionals |
8 |
| 55 |
B2Sell - B2B Ecommerce Solutionsb2sell.com
A leading provider of eCommerce solutions empowering businesses by enhancing product management, order processing, and sales growth through integrated sales channels and analytics |
6 |
| 56 |
Image360 Dullesimage360.com
The company offers graphic solutions for businesses and organizations, specializing in environmental graphics, mobile graphics, way-finding solutions, and promotional displays |
3 |
| 57 |
Ashford Accounting Group, LLCashfordaccountinggroup.com
Providing innovative financial solutions for individuals and businesses to make informed decisions and reach their financial goals |
2 |
| 58 |
Xcelnet Systems Incxcelnetsystems.com
IT consulting firm providing business software solutions and services to a diverse client base Focuses on high quality, value-added solutions for clients |
1 |
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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