| # | Company | Employees |
|---|---|---|
| 1 |
Dell Technologiesdell.com
Provide essential technology infrastructure enabling organizations to transform and advance their digital futures through innovative solutions and support. |
133,530 |
| 2 |
Round Rock ISDroundrockisd.org
Public school district serving over 49,000 students from Pre-K to 12th grade across diverse urban and suburban communities. |
5,505 |
| 3 |
Mc Donald Restaurant
Textiles manufacturer located in Round Rock, Texas, specializing in textile design and production |
5,155 |
| 4 |
Career Strategiescsi4jobs.com
Specializing in various industries, we provide executive search, permanent placement, and temporary staffing services to help clients and candidates achieve their goals |
1,229 |
| 5 |
Construction Labor Contractorspowerlaborusa.com
Construction staffing agency providing skilled labor and HR management solutions to contractors and project managers across the country since 2012 |
1,043 |
| 6 |
City of Round Rockroundrocktexas.gov
The company is based in Round Rock, Texas, a rapidly growing and well-managed city known for its high quality of life and economic growth in Central Texas |
723 |
| 7 |
Dell Compellentdell.com
The company delivers enterprise storage arrays that automatically optimize data placement and movement in real-time, increasing efficiency, agility, and resiliency for businesses |
713 |
| 8 |
Impact Fire Servicesimpactfireservices.com
A leading fire protection company with 200+ years of industry experience, offering installation, maintenance, and inspection services to various industries nationwide |
633 |
| 9 |
RRC Companiesrrccompanies.com
Top-tier engineering firm specializing in utility-scale renewable energy projects, offering comprehensive engineering services and dedicated to creating solutions that exceed expectations |
617 |
| 10 |
Flix Entertainment | Flix Brewhouse | Cinema Breweriesflixbrewhouse.com
A cinema brewery chain offering first-run movies, craft beer, and food served in-theater with upscale amenities and a unique experience |
549 |
| 11 |
Dell EMC XtremIOdell.com
This company develops a revolutionary storage solution using SSD technology, delivering exceptional performance, efficiency, and data management for enterprise IT markets |
531 |
| 12 |
ClearCorrectstraumann.com
Designs, manufactures, and supports clear, removable aligners for straightening teeth discreetly for adults and teenagers through dentists and orthodontists. |
487 |
| 13 |
Toppan Photomasks, Inc.photomask.com
Leading global provider of advanced photomask technologies and manufacturing services supporting the semiconductor industry's complex and diverse product requirements. |
457 |
| 14 |
Bluebonnet Trails Community Servicesbbtrails.org
Providing a variety of services for mental health, disabilities, crisis intervention, primary care, early childhood intervention, autism, and substance use treatment in Central Texas |
443 |
| 15 |
HealthTronicshealthtronics.com
HealthTronics provides urological products and services to healthcare providers, focusing on advanced technology for kidney stone management and patient care |
373 |
| 16 |
Realty Texasrealtytexas.com
Real estate brokerage led by award-winning REALTORSยฎ dedicated to making a positive impact in clients' lives and communities |
319 |
| 17 |
Advanced Pain Careaustinpaindoctor.com
A multi-specialty clinic in Texas offering pain management, rheumatology, neurosurgery, and behavioral health services with a focus on compassion and innovative treatments |
313 |
| 18 |
Texas State Optical (TSO)tsoroundrock.com
A team of eye doctors in Round Rock offering comprehensive eye care services, including eye exams, to residents in surrounding areas |
311 |
| 19 |
AiRCO Mechanical Ltd.aircomechanical.com
A leading construction and services company in central Texas specializing in Commercial and Residential HVAC, Plumbing, and Electrical since 1983 |
267 |
| 20 |
Trellistrelliscompany.org
This mission-driven nonprofit organization connects individuals to education-to-employment pathways, focusing on economic mobility and community prosperity through various initiatives |
205 |
| 21 |
Virtustreamdell.com
A trusted enterprise-class cloud service provider, offering software and infrastructure to migrate and run mission-critical applications securely and efficiently in the cloud |
185 |
| 22 |
YMCA of Central Texasymcactx.org
This company focuses on youth development, healthy living, and social responsibility by implementing Christian principles in programs for overall well-being |
179 |
| 23 |
Inferenzinferenz.ai
Inferenz offers innovative data-driven solutions in IT, research, e-commerce, healthcare, and manufacturing, leveraging AI, cloud, and analytics for business growth |
141 |
| 24 |
Odyssey Technical Solutionsodysseyrf.com
Specializing in equipment repair for RF, DC, and MW applications in semiconductor and industrial markets, including refurbishment, engineering, sales, and distributorship services |
71 |
| 25 |
Cognitive Professional Services Inc. (formally Cognitive Technologies)cog-ps.com
Cognitive Professional Services offers tailored technology and human performance solutions to enhance business performance and accelerate success for clients |
46 |
| 26 |
Equalizerยฎ Auto Glass Toolsequalizer.com
A global leader in developing innovative auto glass removal and replacement products, providing a platform for inventors to bring ideas to market |
33 |
| 27 |
ALIS Software LLCalissoftware.com
Data management and analytics solutions provider, specializing in IT strategies, consulting, managed services, and staffing for digital transformation across various industries |
32 |
| 28 |
Sentry Asset Managementsentryassetmanagement.com
Specializing in managing residential, commercial, and resort investment properties, our company offers professional asset management services to clients |
23 |
| 29 |
Trade Management Solutions LPtms-lp.com
Offers end-to-end supply chain solutions including import/export, customs brokerage, transportation, warehousing, distribution, and consulting, ensuring efficiency, security, visibility, and compliance for clients globally. |
21 |
| 30 |
Lamppost Coffeelamppost.coffee
Operates multiple coffee shops and a mobile coffee company, roasts and ships award-winning coffee, provides wholesale and catering solutions. |
20 |
| 31 |
Professional Systems, LCCsisproinc.com
A leading agricultural company providing products and services designed to satisfy, assist, and optimize production for clients in the industry |
17 |
| 32 | 11 | |
| 33 |
Multi-Channel Logistics, LLCmulti-channellogistics.com
Provider of quality transportation and warehouse solutions globally Specializing in various logistics services to exceed customer expectations with innovation and cutting-edge technology |
8 |
| 34 |
Southern Roots Realty Groupsouthernrootsrealtygroup.com
A team of experienced agents providing top-quality real estate services, building relationships, and serving the Central Texas area with buying, selling, leasing, and investing assistance |
5 |
| 35 |
concretely.aiconcretely.ai
Specializing in AI and machine learning, we analyze analytics environments and develop innovative models to help companies exceed their goals and outperform the competition |
5 |
| 36 |
Promised Groundspromisedgrounds.com
Sourcing and roasting premium coffee beans, providing clean water to communities in need, and supporting churches through a tithing program with every purchase. |
4 |
| 37 |
Trinity Real Estate Group - Austintrinityatx.com
Central Texas real estate services company with global reach, offering a wide variety of services to meet client needs with world-class customer service |
2 |
| 38 |
Regner Realtyregnerrealty.com
Specializing in real estate services for properties in Austin and central Texas, providing expert guidance and support for all your real estate needs |
2 |
Turn this list into pipeline
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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