| # | Company | Employees |
|---|---|---|
| 1 |
Social Security Administrationssa.gov
A government agency providing financial protection and support through retirement, disability, and survivors benefits to over 64 million individuals and families nationwide |
47,537 |
| 2 |
Johns Hopkins Medicinehopkinsmedicine.org
A leading academic medical institution with a focus on healthcare delivery, research, teaching, and patient care for the community |
38,890 |
| 3 |
The Johns Hopkins Universityjhu.edu
Leading research university offering diverse academic programs across multiple campuses, fostering innovation and improving lives through education and discovery. |
18,221 |
| 4 |
University of Maryland Medical Systemumms.org
Multi-hospital system providing trauma, cancer, neuro, cardiac, women's, children's health, rehabilitation, and kidney transplant services across Maryland and beyond. |
15,960 |
| 5 |
Transamericatransamerica.com
Empowering financial professionals and employers to help clients and employees plan for a multi-stage life and live their best life |
15,687 |
| 6 |
Johns Hopkins Hospitalhopkinsmedicine.org
Leading hospital providing expert patient care, emergency services, and specialized medical support to local and international patients. |
14,032 |
| 7 |
Constellationconstellationenergy.com
Leader in clean energy production and services, accelerating transition to carbon-free future through diverse energy portfolio, sustainability initiatives, and technology investments |
13,291 |
| 8 |
Under Armourunderarmour.com
Design and develop innovative performance apparel, footwear, and gear focused on enhancing athletes' training, competition, and recovery experiences. |
13,004 |
| 9 |
T. Rowe Pricetroweprice.com
Global asset management organization providing equity, fixed income, and multi-asset solutions through rigorous research and active investing for individuals, advisors, and institutional clients. |
11,000 |
| 10 |
State of Marylandjobapscloud.com
This company offers various opportunities for full-time, part-time, contractual, internship, and seasonal positions in public service in the state of Maryland |
10,542 |
| 11 |
Baltimore City Public Schoolsbaltimorecityschools.org
A public school system in Baltimore, serving nearly 75,000 students through 164 schools and programs with a focus on literacy and student success |
8,279 |
| 12 |
Catholic Relief Servicescrs.org
An international humanitarian agency providing assistance to people in need in over 100 countries, with high efficiency and transparency |
7,845 |
| 13 |
CareFirst BlueCross BlueShieldcarefirst.com
Providing affordable, accessible, and quality healthcare services to over 3.5 million people with empathy, innovation, and community focus. |
7,214 |
| 14 |
OneMain Financialonemainfinancial.com
A leading provider of responsible credit access for nonprime customers, focusing on improving financial well-being and offering personal loans and credit cards |
7,203 |
| 15 |
The Johns Hopkins University School of Medicinehopkinsmedicine.org
Provider of top-ranked medical and graduate programs, clinical fellowships, residencies, basic science research opportunities, and medical art programs with renowned experts |
7,057 |
| 16 |
University of Maryland Medical Centerumm.edu
A renowned teaching hospital in Baltimore providing comprehensive healthcare services, specializing in trauma, cancer care, organ transplants, and minimally invasive surgeries since 1823 |
6,540 |
| 17 |
Centers for Medicare & Medicaid Servicescms.gov
Administration of Medicare, Medicaid, CHIP, and Health Insurance Marketplace providing health coverage to over 160 million Americans nationwide. |
6,340 |
| 18 |
Jhpiegojhpiego.org
Nonprofit organization improving healthcare access and quality in developing countries by training providers and strengthening health systems globally. |
5,632 |
| 19 |
University of Maryland Baltimore Countyumbc.edu
Public research university focused on innovation, interdisciplinary education, undergraduate success, and groundbreaking research with a strong emphasis on science, engineering, and information technology |
5,495 |
| 20 |
LifeBridge Healthlifebridgehealth.org
Regional healthcare organization providing hospital services, primary and specialty care, wellness programs, and community health education in northwest Baltimore. |
4,617 |
| 21 |
University of Maryland, Baltimore (UMB)umaryland.edu
A leading public research university in Maryland offering professional schools in health, law, and human services since 1807 |
3,994 |
| 22 |
Johns Hopkins Bloomberg School of Public Healthpublichealth.jhu.edu
A leading institution in public health education and research, dedicated to improving global health through knowledge discovery and application |
3,721 |
| 23 |
Exelon Generationconstellationenergy.com
A leading producer of carbon-free energy, offering power and energy products for homes and businesses nationwide, accelerating the transition to clean energy |
3,675 |
| 24 |
Morgan State Universitylinktr.ee
A public urban research university offering over 125 academic programs, preparing diverse graduates to lead through innovative education and community service |
3,501 |
| 25 |
City of Baltimorebaltimorecity.gov
The company is based in Baltimore, Maryland, and focuses on historical preservation, with a focus on National Register historic districts and public monuments |
3,376 |
| 26 |
Sheppard Prattsheppardpratt.org
A leading nonprofit provider of mental health, substance use, special education, and social services through hospital- and community-based resources, prioritizing global mental health care quality |
3,354 |
| 27 |
Kennedy Krieger Institutekennedykrieger.org
A renowned institute in Baltimore, MD, specializing in improving the lives of children and adolescents with brain, spinal cord, and musculoskeletal disorders |
2,841 |
| 28 |
Royal Farmsroyalfarms.com
Operating over 240 stores on the East Coast, this company offers fresh foods, dairy products, convenience items, and gasoline products |
2,814 |
| 29 |
GBMC HealthCaregbmc.org
A not-for-profit healthcare corporation with a regional hospital, primary care providers, specialists, and end-of-life care services, dedicated to patient-centered care |
2,603 |
| 30 | 2,525 | |
| 31 |
Community College of Baltimore Countyccbcmd.edu
Offering high-quality, accessible, and affordable education with a wide range of degree programs, certifications, and transfer opportunities to help students reach their career goals |
2,494 |
| 32 |
Mercy Medical Center, Baltimore, MDcareers.mdmercy.com
Catholic health care facility in Baltimore providing cutting-edge medical services, recognized for excellence in nursing and various medical specialties |
2,352 |
| 33 |
Loyola University Marylandloyola.edu
Comprehensive Jesuit university offering undergraduate and graduate programs focused on liberal arts, professional success, leadership, community service, and holistic student development. |
2,295 |
| 34 |
Brightview Senior Livingcareers.brightviewseniorliving.com
Brightview is a leading provider of vibrant senior living communities, offering rewarding careers with competitive salaries and exceptional benefits |
2,168 |
| 35 | 2,062 | |
| 36 |
Maryland Department of Healthhealth.maryland.gov
Protect health and well-being of Maryland residents through regulation, healthcare system oversight, disease prevention, and ensuring access to quality care. |
1,925 |
| 37 |
Maryland Department of Public Safety & Correctional Servicesdpscs.maryland.gov
Management of correctional institutions, parole, probation, public safety, offender rehabilitation, community projects, crime reduction, and inter-agency collaboration in Maryland. |
1,925 |
| 38 |
S.A.F.E. Managementsafemanagement.net
Specialized in guest services, security, crowd management, and staffing for sport facilities, events, and 24/7 security with a focus on safety |
1,856 |
| 39 |
University of Baltimoreubalt.edu
A public university in Maryland offering career-focused education in business, public affairs, arts and sciences, and law with flexible scheduling options |
1,837 |
| 40 |
Ubs Financial Services
Investment management company located in Baltimore, Maryland, specializing in financial services and wealth management |
1,817 |
| 41 |
Flywheelflywheeldigital.com
Leading cloud-based digital commerce platform enabling real-time performance measurement and sales improvement for global consumer product companies and fast-growing brands worldwide |
1,693 |
| 42 |
Optaviaoptavia.com
OPTAVIA offers support through coaches, community, transformative system, and clinically proven plans/products to help individuals achieve lifelong health and wellbeing |
1,677 |
| 43 |
Baltimore Gas and Electricbge.com
Maryland's largest gas and electric utility delivering power to over 13 million electric customers and 700,000 natural gas customers, emphasizing safety, reliability, and energy conservation |
1,604 |
| 44 | 1,371 | |
| 45 | 1,345 | |
| 46 |
Baltimore Police Departmentbaltimorepolice.org
A dedicated police department serving the residents, business owners, and visitors of Baltimore, organizing into nine districts to police the city's land and waterways |
1,324 |
| 47 |
Medifast, Incmedifastinc.com
Science-based health company offering personalized lifestyle plans, products, and coaching to improve metabolic function and body composition. |
1,321 |
| 48 |
Alpha Phi Alpha Fraternitymy.apa1906.net
A historic non-profit organization promoting leadership, brotherhood, academic excellence, and community service through various programs and initiatives for African American college men |
1,250 |
| 49 | 1,206 | |
| 50 |
MedStar Franklin Square Medical Centermedstarhealth.org
A top community teaching hospital providing leading-edge medical services, recognized for excellence in nursing and quality care Contact for appointments |
1,190 |
| 51 |
LEARN Behaviorallearnbehavioral.com
National organization specializing in evidence-based ABA treatment for children with autism and special needs, empowering families for happy, fulfilling lives |
1,130 |
| 52 |
Brown Advisorybrownadvisory.com
Independent firm providing investment management, strategic advice, and client service to individuals, families, institutions, and financial intermediaries worldwide. |
1,124 |
| 53 |
Chimeschimes.org
The Chimes Family of Services provides opportunities and support for individuals with disabilities through a variety of innovative and flexible services |
1,118 |
| 54 |
Maryland Institute College of Artmica.edu
Leading art and design college with over a century of experience, dedicated to fostering talent, creativity, and expanding artistic boundaries through rigorous education |
1,086 |
| 55 |
Maryland Department of Human Servicesdhs.maryland.gov
A leading social services provider in Maryland, assisting over one million people annually through economic support, preventive services, and protecting vulnerable populations |
1,086 |
| 56 |
Coppin State Universitycoppin.edu
A Historically Black Institution in an urban setting, providing education opportunities, promoting lifelong learning, leadership, diversity, and economic development |
1,061 |
| 57 |
Maryland State Highway Administrationroads.maryland.gov
A long-standing organization focused on building and maintaining quality infrastructure through a dedicated team and continuous skill development programs |
1,019 |
| 58 |
Maryland Department of Juvenile Servicesdjs.maryland.gov
An executive agency in Maryland manages, supervises, and treats youth in the juvenile justice system, focusing on individualized care and community partnerships for improved outcomes |
1,005 |
| 59 |
Baltimore Oriolesorioles.com
Major League Baseball team with a rich history, focusing on rebuilding with a top-ranked farm system and creating a fun, family-friendly atmosphere for fans |
995 |
| 60 |
Johns Hopkins Whiting School of Engineeringengineering.jhu.edu
The company's faculty and students work on cutting-edge research in various fields including wind engineering, computational medicine, and surgical robotics |
992 |
| 61 |
Goucher Collegegoucher.edu
A private liberal arts college in Baltimore, Maryland, offering bachelor's and master's degrees to over 1,350 undergraduate and 1,000 graduate students |
911 |
| 62 |
MedStar Union Memorial Hospitalmedstarhealth.org
A leading not-for-profit acute care teaching hospital specializing in cardiac care, orthopaedics, sports medicine, and various outpatient services in Maryland |
910 |
| 63 |
Office of the Public Defender Marylandstate.md.us
The company provides high-quality legal representation to indigent defendants in Maryland, ensuring their rights are upheld under various legal frameworks |
907 |
| 64 |
ZeroFoxzerofox.com
Discover, validate, and disrupt external cyber threats using a unified platform combining threat intelligence, brand protection, and attack surface insights. |
862 |
| 65 |
Layline Risk Managementblueridgeriskpartners.com
This company specializes in managing risk transfer, providing insurance and benefit services, and delivering innovative solutions for clients in various industries |
853 |
| 66 |
Baltimore City Community Collegebccc.edu
Urban institution offering diverse degree and certificate programs with affordable tuition, workforce training, and credits transferable to four-year colleges Proudly serving students from various nations |
851 |
| 67 |
Johns Hopkins School of Nursingnursing.jhu.edu
A globally-recognized leader in nursing education, research, and practice, ranking #1 for graduate programs and #2 for online programs nationally |
835 |
| 68 |
Sylvan Learning Centerssylvanlearning.com
Provider of personalized tutoring and education services for students of all ages, focusing on improving academic skills and preparing for success |
817 |
| 69 |
No Experience Technoexperience.tech
Consulting services for professionals seeking career advancement, offering personalized guidance and tangible solutions for growth and improvement |
815 |
| 70 |
Whitman, Requardt and Associates, LLPwrallp.com
A nationally-recognized firm providing engineering, architectural, and environmental planning services with a focus on client service, quality work, and forward thinking solutions |
785 |
| 71 |
Remedi SeniorCare Pharmacyremedirx.com
This company specializes in technology-enabled pharmacy solutions, including a unit-dose dispensing system to improve medication administration and nursing satisfaction |
765 |
| 72 |
Space Telescope Science Institutestsci.edu
A leading space institute in Maryland, operating advanced space telescopes, curating data archives, conducting scientific research, and promoting diversity and inclusivity |
763 |
| 73 |
The Y in Central Marylandymaryland.org
A cause-driven organization offering diverse professionals meaningful careers to inspire others and make a positive impact on the community |
748 |
| 74 |
MedStar Harbor Hospitalmedstarhealth.org
A community-focused hospital offering state-of-the-art healthcare services, governed by a board of trustees, and dedicated to meeting patients' needs |
731 |
| 75 |
Healthy lifestyletitusbolz.com
Providing resources and information on managing diabetes through home remedies, herbs, diet control, and natural methods for blood sugar levels and diabetic complications |
723 |
| 76 |
The Johns Hopkins University - Carey Business Schoolcarey.jhu.edu
A business school part of Johns Hopkins University, accredited by AACSB, shaping leaders through knowledge to impact economies and societies |
712 |
| 77 |
SUSsusdivers.com
Specializing in underwater marine construction, we offer services for bridges, dams, pipelines, inspection, and more in the Mid-Atlantic and Northeast regions |
702 |
| 78 |
Notre Dame of Maryland Universityndm.edu
A university offering a wide range of educational programs to women and men, focused on preparing compassionate leaders for professional success |
702 |
| 79 |
Cambridge Schoolcambridgeschool.org
A classical Christian K-8 school in Baltimore focused on educating hearts and minds through virtue, truth, and imaginative learning |
697 |
| 80 |
Maryland State Department of Education (MSDE)marylandpublicschools.org
The company is focused on providing a high-quality and equitable education for students in Maryland through various services and strategic plans |
685 |
| 81 |
Maryland Department of the Environmentmde.maryland.gov
The company focuses on promoting healthy and sustainable communities in Maryland through service, science-driven regulation, innovation, integration, partnerships, performance tracking, and employee development |
672 |
| 82 |
John Hopkins Universityjhu.edu
A pioneering institution dedicated to teaching, research, and patient care, leading the way in innovation and securing top federal research funds |
658 |
| 83 |
Maryland Department of Laborlabor.maryland.gov
The company focuses on creating a fair, inclusive environment in Maryland by supporting residents, businesses, and ensuring workplace safety and economic growth |
619 |
| 84 |
Catholic Charities of Baltimorecc-md.org
This organization provides various services to over 160,000 individuals annually across multiple counties in Maryland, aiming to improve lives and offer hope |
613 |
| 85 |
Brighter Strides ABA Therapybrighterstridesaba.com
Providing ABA therapy services for individuals with Autism Spectrum Disorder through personalized treatment programs designed by experienced BCBAs and therapists |
600 |
| 86 |
Johns Hopkins Center For Talented Youth (CTY)cty.jhu.edu
A non-profit part of Johns Hopkins University developing talents of gifted K-12 students globally since 1979 |
588 |
| 87 |
The Baltimore Sunbaltimoresun.com
Maryland's largest daily news organization, part of Tribune Publishing, publishing general news, business, features, sports, and opinion Winner of 16 Pulitzer Prizes |
584 |
| 88 |
MDI NetworXmdinetworx.com
Specializing in technology-driven solutions, the company offers business management services to health insurance payers, TPAs, and Health Plans on a global scale |
583 |
| 89 |
Advanced Radiologyadvancedradiology.com
Specializing in diagnostic imaging services, our board-certified radiologists offer advanced technology for accurate diagnoses at multiple locations throughout Maryland, accepting all major insurances |
574 |
| 90 |
Synagrosynagro.com
A leading provider of environmentally sustainable solutions for managing industrial and municipal waste, transforming by-products into resources and renewable energy |
565 |
| 91 |
Maryland Office of the Attorney Generalmarylandattorneygeneral.gov
The Maryland Attorney General's Office is a comprehensive law firm dedicated to protecting the State through criminal investigations, civil litigation, and environmental enforcement |
556 |
| 92 |
Baltimore City Health Departmentbaltimorecity.gov
Providing public health services in Baltimore since 1793, focused on improving residents' health through various programs and initiatives |
519 |
| 93 |
BHSbhsonline.com
The company specializes in optimizing organizational performance through employee assistance, well-being, and organizational development solutions, focusing on bettering lives at work |
513 |
| 94 |
First Home Mortgagefirsthome.com
A mortgage corporation offering home loan services in 21 states, with a focus on superior customer service and empowering employees for innovative ideas |
508 |
| 95 |
Johns Hopkins University School of Educationeducation.jhu.edu
The Johns Hopkins School of Education collaborates with partners to address challenges in education through innovative programs and research centers |
502 |
| 96 |
Miles & Stockbridge P.C.mslaw.com
A leading full-service law firm with 200 lawyers in offices across the mid-Atlantic region, representing businesses of various sizes with a focus on diversity and inclusion |
501 |
| 97 |
Sandlersandler.com
Provides innovative sales, leadership, and management training with ongoing workshops, coaching, and reinforcement for lasting improvement. |
498 |
| 98 |
Global Refugeglobalrefuge.org
This organization provides support and advocacy for immigrants and refugees, helping them resettle, reunite families, protect children, and promote justice and compassion |
497 |
| 99 |
Volo Sportsvolosports.com
A company based in Baltimore offering adults sports, fitness, social activities, and volunteer opportunities while supporting free youth sports programs nationwide |
495 |
| 100 |
University of Maryland Medical Center Midtown Campusummidtown.org
A 200-bed non-profit community teaching hospital in Baltimore, providing care across 30 specialties and expanding outpatient services to serve the community |
492 |
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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 9, 2026.
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