| # | Company | Employees |
|---|---|---|
| 1 |
Greystargreystar.com
Provides world-class service in residential rental housing through integrated management, development, and investment, creating inviting living environments and enhancing resident experiences. |
19,329 |
| 2 |
Medical University of South Carolinamusc.edu
Public institution focused on educating healthcare professionals, conducting biomedical research, and providing comprehensive healthcare services in South Carolina and beyond. |
15,845 |
| 3 |
Sonepar USAsoneparusa.com
A global leader in B-to-B electrical distribution, Sonepar offers products, solutions, and services through a digital omnichannel experience, with operations in 40 countries |
8,116 |
| 4 |
Charleston County School Districtccsdschools.com
Nationally-accredited school district providing equitable and quality educational opportunities through a diverse range of specialized programs for 50,000+ students |
5,658 |
| 5 |
MUSC Healthmuschealth.org
A healthcare system based in South Carolina, providing high-quality patient care, education for healthcare providers, and groundbreaking research and innovation |
5,606 |
| 6 |
College of Charlestoncofc.edu
Public liberal arts university offering quality education, student life, and affordability with historic campus and diverse academic programs. |
4,113 |
| 7 |
Roper St. Francis Healthcarersfh.com
A leading healthcare provider in Charleston with 657 beds, over 90 facilities, and a network of 900 board-certified doctors offering primary care and subspecialties |
4,045 |
| 8 |
Blackbaudblackbaud.com
Software provider focused on social impact, serving nonprofits, education, and socially responsible companies with essential solutions for fundraising, financial management, and more |
3,257 |
| 9 |
Eastern Illinois Universityeiu.edu
This company has been supporting student success since 1895 with expert faculty, research opportunities, student organizations, and a 320-acre campus |
2,555 |
| 10 |
State of West Virginiawv.gov
West Virginia-based company promoting the beauty and attractions of the state through tourism and economic development initiatives |
2,167 |
| 11 |
Kanawha County Board of Educationkcs.kana.k12.wv.us
A educational institution serving the students of Kanawha County, providing a comprehensive learning experience and preparing students for success |
2,122 |
| 12 |
Charleston Area Medical Centercamc.org
Largest healthcare system in southern West Virginia with hospitals, cancer center, academic training, and nearly 7,000 employees. |
2,007 |
| 13 |
The Citadelcitadel.edu
A prestigious military college in Charleston offering leadership-focused education with options for military commissioning, graduate degrees, and undergraduate programs |
1,789 |
| 14 |
Trident Technical Collegetridenttech.edu
A diverse college providing over 150 programs, with multiple campuses, online and evening classes for flexible learning options |
1,654 |
| 15 |
Panda Express Chinese Restpandaexpress.com
A Food and Beverages company in Charleston, South Carolina, specializing in Chinese cuisine |
1,397 |
| 16 |
Kanawha County Schools
An educational institution focused on providing a world-class education to all students, ensuring success through quality teaching, partnerships, safety, and innovation |
1,125 |
| 17 |
Charleston Southern Universitycharlestonsouthern.edu
A private Christian university offering over 80 academic programs integrating faith, with a focus on online education and purpose-driven learning |
1,101 |
| 18 |
City of Charlestoncharleston-sc.gov
Provides high quality public services through careful urban planning, historic preservation initiatives, and diligent maintenance of spaces for residents and visitors. |
1,017 |
| 19 | 997 | |
| 20 |
Benefitfocusbenefitfocus.com
This company improves lives by simplifying benefit programs through innovative technology, focusing on health, engagement, and better outcomes for organizations and individuals |
924 |
| 21 |
HCA Healthcare Trident Hospitalhcahealthcarecharleston.com
A top-ranking hospital in Charleston, SC, providing exceptional trauma care and part of a healthcare system with multiple facilities |
894 |
| 22 |
Riverstone Residential Groupgreystar.com
A leading multifamily real estate business offering management, development, and investment services with a focus on innovation and excellence |
868 |
| 23 |
University of Charlestonmrooms3.net
An independent, co-educational university in West Virginia, offering a unique curriculum emphasizing critical thinking, creativity, ethical practice, and community involvement |
630 |
| 24 |
Refuel Operating Company, LLCrefuelmarket.com
A retail company with over 220 convenience stores in five states, focused on providing the best environment for customers and team members |
606 |
| 25 |
Palmetto Moonpalmettomoononline.com
This company celebrates Southern lifestyle by offering gifts, apparel, and popular brands like YETI, Simply Southern, and Vineyard Vines across multiple locations |
601 |
| 26 |
Life Cycle Engineeringlce.com
Provides consulting, engineering, IT, and education solutions for private industry, government, and military, focusing on reliability, technology, engineering, and education services |
588 |
| 27 |
RALPH H. JOHNSON VA HEALTH CARE SYSTEMva.gov
A Veterans healthcare system located in Charleston, South Carolina, providing healthcare services to veterans in the United States |
585 |
| 28 |
Harmony Senior Servicesharmonyseniorservices.com
Fully-integrated management services company specializing in senior housing industry, offering unique care strategies and a continuum of care for senior residents |
578 |
| 29 |
LS3P ASSOCIATES LTD.ls3p.com
An architecture, interiors, and planning firm with 60 years of design excellence, focusing on creating outstanding spaces for various purposes |
543 |
| 30 |
WV Department of Human Servicesdhhr.wv.gov
This organization collaborates with stakeholders to promote, protect, and provide health and human services to improve residents' well-being and quality of life |
515 |
| 31 |
West Virginia Department of Educationwvde.us
Government agency overseeing West Virginia's public school system, ensuring all students graduate prepared for college/careers through policies, funding, assessments, educator licensing, and accountability data |
499 |
| 32 |
Hudson Automotive Grouphudsonauto.com
A diverse range of quality vehicles, exceptional service, community involvement, and multiple awards for outstanding customer satisfaction across various dealership locations |
494 |
| 33 |
Saint Francis Hospitalstfrancishospital.com
A community-oriented hospital within the Thomas Health System, known for compassionate, high-quality healthcare and ranked top in patient satisfaction |
452 |
| 34 |
Department of Veterans Affairs, Charleston, SCvaww.visn7.med.va.gov
A VA Medical Center providing primary, secondary, and tertiary care services in South Carolina and Georgia, supporting research and medical education collaborations |
442 |
| 35 |
Jackson Kelly PLLCjacksonkelly.com
A national law firm representing corporations, companies, entrepreneurs, and individuals in environmental, business, employment, litigation, and workers' compensation law Offices nationwide |
382 |
| 36 |
MUSC Children's Healthmusckids.org
Specializing in pediatric clinical care and research, providing comprehensive and compassionate services in over 27 specialty areas across South Carolina |
376 |
| 37 |
West Virginia National Guardwv.ng.mil
Sharing the Army & Air National Guard story in West Virginia, this account does not endorse content it follows, retweets, or links |
375 |
| 38 |
Skin Cliqueskinclique.com
Skin Clique offers convenient, affordable access to medical-grade treatments performed by board certified experts in the comfort of your own home, helping you feel confident in your skin |
370 |
| 39 |
Heart of Hospicelhcgroup.com
The company aims to revolutionize end-of-life care by providing high-quality hospice services to patients and their loved ones in multiple regions |
357 |
| 40 |
Southern Crown Partnersscpdist.com
An established Anheuser-Busch distributor specializing in beer distribution, with a history of acquiring distributorships and territories across the southeastern United States |
355 |
| 41 |
Stonerisestonerise.com
Clinician-led transitional care company providing skilled nursing, therapy, home health, and hospice services to patients in West Virginia and southeast Ohio |
355 |
| 42 |
Charleston County Park & Recreation Commissionccprc.com
Develops and maintains a diverse system of park facilities, programs, and services to improve quality of life in Charleston County |
352 |
| 43 |
The Charleston Placecharlestonplace.com
Luxurious hotel in downtown Charleston offering Southern hospitality, spa, dining options, and event spaces including a historic theater for conferences |
348 |
| 44 |
The Post and Courierpostandcourier.com
Award-winning South Carolina newspaper based in Charleston, known for its exceptional public service journalism, including a 2015 Pulitzer Prize Gold Medal |
343 |
| 45 |
Grace Episcopal Church (Charleston, SC)gracechurchcharleston.org
A community in Charleston, SC, focused on growth and vibrancy, aiming to be a positive presence and beacon in the city |
341 |
| 46 |
Charleston Water Systemcharlestonwater.com
A public water and wastewater utility in Charleston, SC, providing clean and reliable water services to the community to protect public health and the environment |
328 |
| 47 |
West Virginia Judiciary
Highest court in West Virginia, overseeing a unified court system including appellate, circuit, family, and magistrate courts |
325 |
| 48 |
Villas of Holly Brookvillasofhollybrook.com
The company provides compassionate quality senior care, focusing on residents' unique needs, promoting dignity, respect, and a worry-free lifestyle |
323 |
| 49 |
Technica LLC.technicanow.com
Global provider of support solutions to the Defense Industry including maintenance, logistics, engineering, and IT services Currently hiring, visit our career page |
321 |
| 50 |
Wright Brothers Construction Company, Inc.wbcci.com
A construction company specializing in site preparation, grading, excavating, highway construction, and heavy infrastructure projects with a focus on customer satisfaction |
319 |
| 51 |
ORBIS Incorbisinc.net
A Veteran Owned Small Business providing engineering, technical, and consulting services to the Department of Defense with headquarters in Charleston, SC |
302 |
| 52 |
MEDcare Urgent Carecarenow.com
Providing fast, friendly, and affordable healthcare services in every community with extended operating hours through the Urgent Care Group network |
290 |
| 53 |
Haynsworth Sinkler Boyd, P.A.hsblawfirm.com
This company provides innovative legal solutions across various sectors, offering advice, counsel, and representation in regional, national, and international settings |
262 |
| 54 |
The Beach Companythebeachcompany.com
A leading Southeastern real estate firm with 75+ years of experience in development, construction, acquisition, sales, management, and community-focused corporate giving |
262 |
| 55 |
Blue Acorn iCiblueacornici.com
The company specializes in digital customer experience, analytics, digital commerce, and experience-driven commerce offerings to enhance interactions and drive business growth |
257 |
| 56 |
eGroup Enabling Technologiesegroup-us.com
A recognized leader in Data and AI, Cloud, Hybrid Cloud, Data Center, Security, and Managed Services, empowering businesses with expertise and solutions |
229 |
| 57 |
Call Expertscallexperts.com
A family-owned call center providing telecommunications and office-based services with a focus on professionalism, growth, and excellent customer service |
223 |
| 58 |
BrickStreet Insuranceencova.com
An affiliated group of property, casualty, and life insurance companies with a focus on workers' compensation coverage, serving 29 states through independent agents |
203 |
| 59 |
MUSC College of Health Professionschp.musc.edu
A national leader in health professions education, research, and diversity, offering top-ranked degree programs and utilizing cutting-edge technology for student learning |
199 |
| 60 |
Children's Dentistrychildrensdentistry.net.au
Family-owned dental office providing personalized care and treatment for patients of all ages since 2001 Personalized, welcoming service for the whole family |
196 |
| 61 |
Select Health of South Carolinaselecthealthofsc.com
A health insurer in South Carolina, focused on improving member health and saving on costs through coordinated care and community outreach programs |
196 |
| 62 |
Charleston ENT & Allergycharlestonent.com
A leading ENT practice in South Carolina with an accredited ambulatory surgery center, offering award-winning care and opportunities for professionals to join their team |
193 |
| 63 |
Charlestowne Hotelscharlestownehotels.com
Hospitality management company with 40 years of experience specializing in lifestyle hotels, independent markets, collegiate markets, and property renovations to elevate guest experiences |
192 |
| 64 |
Quality Insightsqualityinsights.org
A team of healthcare experts dedicated to measuring and improving healthcare quality through services like quality improvement, practice transformation, and health informatics |
184 |
| 65 |
GEL Laboratories, LLCgel.com
A leading provider of environmental analytical services since 1981, offering chemical, radiochemical, and specialty analyses with state-of-the-art instrumentation and accreditation from various agencies |
184 |
| 66 |
LINKuseinktothink.com
A consulting agency that combines creative and analytical approaches to solve challenging problems, drive change, engage people, discover opportunities, and inspire action |
184 |
| 67 | 180 | |
| 68 |
Bishop Gadsden Episcopal Retirement Communitybishopgadsden.org
A leading retirement community in the Southeast with over 500 residents and 40 employees, offering a first-class lifestyle in Charleston, SC |
177 |
| 69 |
SOTF - Special Operators Transition Foundationsotf.org
A non-profit supporting special operations veterans and families with employment transition services, internships, education, and family stabilization during and after military transition |
166 |
| 70 |
Pharmacutical Healthcare
A company based in Charleston, South Carolina, specializing in oil and energy services at its location on Fleming Rd |
165 |
| 71 |
MUSC Hollings Cancer Centerhollingscancercenter.musc.edu
A leading cancer treatment center in the Southeast, offering personalized care through a team of over 60 sub-specialists |
165 |
| 72 |
Old Colony Holding Companyoldcolony.com
A real estate company serving West Virginia and parts of Kentucky and Ohio, helping families and businesses buy and sell properties with experienced sales professionals |
161 |
| 73 |
The Diocese of Charlestoncharlestondiocese.org
An official account representing the Roman Catholic Diocese of Charleston, providing updates and information related to the diocese |
159 |
| 74 |
Hotel Bennetthotelbennett.com
Luxurious hotel in Charleston with 179 guestrooms, rooftop pool, signature restaurant, bar, event spaces, and spa offering top-tier hospitality and amenities |
156 |
| 75 |
National Travel Service, Inc.nationaltravel.com
Travel industry leader since 1977, ranking in top 1% of US travel companies Specializing in personalized service for small businesses, corporations, and government agencies |
156 |
| 76 |
MST Servicesmstservices.com
Evidence-based Multisystemic Therapy (MST) provides intensive support for at-risk youth in homes, schools, and communities to reduce criminal activity |
155 |
| 77 |
Bailey & Glasser, LLPbaileyglasser.com
A national law firm specializing in complex litigation, energy law, corporate matters, class actions, catastrophic injury cases, antitrust, and whistleblower lawsuits |
155 |
| 78 |
Qubaticqubatic.com
A progressive firm offering Steel Detailing, RC Detailing, Precast Detailing, Estimation, and BIM Modelling services with a focus on innovation and client satisfaction |
154 |
| 79 | 153 | |
| 80 |
Highland Hospitalhighlandhosp.com
A mental health care provider in West Virginia offering quality care, educated staff, and a safe environment for over sixty years |
149 |
| 81 |
Hill Constructionhillcon.com
Family-owned commercial construction company operating since 1956, specializing in design-build, construction management, and general contracting services with a focus on quality and client satisfaction |
146 |
| 82 |
Mankiewicz Coatings USAmankiewicz.com
A global leader in high-quality coating solutions for various industries, Mankiewicz drives innovation, sustainability, and collaboration across its value chain |
133 |
| 83 |
RMS Beautyrmsbeauty.com
This company specializes in creating masterfully made and beautifully clean products or services without specifying the product category or industry |
115 |
| 84 |
Buffalo Groupebuffalogroupe.com
A collective of agencies, media properties, and events that serve industries like golf, travel, fitness, and sports through digital marketing and PR services |
103 |
| 85 |
Fred
A kitchenware retail store that specialized in selling a variety of kitchen products, but is no longer in business |
67 |
| 86 |
Easton Porter Groupeastonporter.com
This company specializes in creating unique hospitality experiences through luxurious design, customized service, and attention to detail in their various establishments and services |
60 |
| 87 |
Sprocketssprockets.ai
It provides employers with tools for hiring and retaining hourly workers, utilizing virtual interviews and AI to reduce turnover and costs. |
57 |
| 88 |
Argents Express Groupargents.com
Licensed customs brokerage and international logistics provider offering import, export, freight, and fulfillment services with extensive warehouse space. |
56 |
| 89 |
KSA Insuranceksa-insurance.com
This company offers a range of personal and commercial insurance services, including property, liability, health, life, and employee benefits coverage |
35 |
| 90 |
Bridge Commercialbridge-commercial.com
A regionally-focused commercial real estate firm offering tenant representation, owner representation, investment sales, strategic planning, site selection, and consulting services |
35 |
| 91 |
ambwealthambwealth.com
A firm dedicated to managing and preserving family wealth, solving corporate challenges, providing uncompromised advice, and offering world-class solutions |
30 |
| 92 |
LAIRElairedigital.com
Growth engine for B2B brands specializing in marketing strategy, sales enablement, automation, branding, content, and paid media to drive revenue. |
26 |
| 93 |
Mountain State Insurance Agency, Inc.mountainstateinsurance.com
A company dedicated to providing insurance, employee benefits, and financial services products with a focus on understanding and meeting client needs ethically and professionally |
22 |
| 94 |
Mountaineer Fabricators Incmountaineerfabricators.com
A company specializing in fabrication and machining services, prioritizing quality and cost effectiveness for customers while ensuring a safe workplace |
22 |
| 95 |
PermCappermcap.com
An Outsourced Chief Investment Officer and Multi-Family Office serving endowments, foundations, faith-based institutions, and high-net-worth families since 2011, with $45B in assets managed |
21 |
| 96 |
Ivy Asset Groupivyassetgroup.com
Alternative credit manager providing financing solutions to lower-middle market businesses through Private Credit funds, investing in companies with EBITDA up to $35 million Deployed over $12 billion since 2009 |
20 |
| 97 |
OneDataSourceonedatasource.com
OneDataSource provides SaaS BI and BPA solutions, including onePAY for AP automation and oneVIEW for transforming POS data into actionable insights |
19 |
| 98 |
Klockner Group LLCklocknergroup.com
Specializing in industrial machinery design, manufacture, and installation, offering full-service OEM solutions with in-house engineering, manufacturing, and installation crews nationwide |
18 |
| 99 |
Huguenot Fuels, Inc.huguenotfuels.com
A leading supplier of Refined Products in the US, specializing in marketing, distribution, credit facilitation, and risk management of wholesale fuel supply |
17 |
| 100 |
Centurion Insurancecenturioninsuranceservices.com
Specializing in customized insurance solutions for businesses, offering high-quality commercial insurance and employee benefits with superior customer service and innovative, personalized solutions |
17 |
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