| # | Company | Employees |
|---|---|---|
| 1 | 30,335 | |
| 2 |
Delaware Northdelawarenorth.com
Global leader providing hospitality services at sports venues, airports, parks, restaurants, hotels, and casinos, delivering high-quality guest experiences through enduring community partnerships. |
13,504 |
| 3 |
New Era Capneweracap.com
International lifestyle brand specializing in official sports headwear, accessories, and apparel for men, women, and youth worldwide. |
3,667 |
| 4 |
Erie Countyerie.gov
Erie County government in New York provides public services, law enforcement, and maintains infrastructure for nearly one million residents in the area |
2,584 |
| 5 |
ACV Auctionsacvauctions.com
digital marketplace for wholesale vehicle transactions and data services, enabling dealers to buy, sell, and value vehicles efficiently |
1,915 |
| 6 |
Erie County Medical Center Corporationecmc.edu
A medical leader in Western New York focusing on patient experience, providing specialized care, trauma services, and advanced healthcare technologies |
1,887 |
| 7 |
Independent Healthindependenthealth.com
A pioneering HMO in Western New York, offering over 100 plans nationwide, covering 355,000 individuals with various healthcare services and products |
1,736 |
| 8 |
Elderwoodelderwood.com
A leading provider of senior care services in the Northeast and Mid-Atlantic states, offering a wide range of high-quality facilities and specialized care programs |
1,660 |
| 9 |
Delta Sonicdeltasoniccarwash.com
A car care company setting industry standards for quality, value, and integrity with locations spanning Western and Central New York, Chicago, and Pennsylvania |
1,424 |
| 10 |
Erie Community Collegeecc.edu
A SUNY member college in Western New York offering flexible, affordable educational programs that enrich host communities through skill, service, and partnership |
1,333 |
| 11 |
First Niagara Bankkey.com
A financial institution acquired by KeyBank, offering company news, career opportunities, and banking services Connect with us on KeyBank's page |
1,301 |
| 12 |
Lactalis American Grouplactalisamericangroup.com
Manufacturing and distributing a variety of cheeses and dairy products under well-known brands across multiple U.S. facilities. |
1,098 |
| 13 |
Goldberg Segallagoldbergsegalla.com
National civil litigation firm of 400+ attorneys in 22 offices across the US, providing strategic counsel to clients in various industries |
1,005 |
| 14 |
Jacobs School of Medicine and Biomedical Sciences at the University at Buffalomedicine.buffalo.edu
A renowned medical school and research institution, focused on educating physicians, providing patient care, and advancing scientific discovery since 1846 #UBMed175 |
771 |
| 15 |
Venture Forthe Inc.ventureforthe.com
Family-owned home care agency providing licensed services in New York including personal care, counseling, and support programs to promote independence and quality of life |
715 |
| 16 |
Buffalo Public School Systembuffaloschools.org
Providing equal high-quality education to all children by guaranteeing pathways to opportunity in exchange for hard work, commitment, and collaboration |
671 |
| 17 |
PCIpciconnected.com
The company provides expert IT capabilities and services, specializing in IT infrastructure management to help businesses focus on their core competency |
656 |
| 18 |
Logistic Dynamicsshipldi.com
A Buffalo-based logistics provider specializing in transportation management and freight brokerage services across North America, utilizing a network of agents and carriers |
634 |
| 19 |
Buffalo Medical Groupbuffalomedicalgroup.com
Buffalo Medical Group offers comprehensive, compassionate care from primary care physicians and specialists, focusing on wellness and personalized treatment for diverse healthcare needs |
618 |
| 20 |
Stark Techlinktr.ee
Provides integrated building solutions, equipment, and advanced analytics for total building optimization. Designs large-scale energy systems reducing greenhouse gas emissions through renewables. |
591 |
| 21 |
Hodgson Russ LLPhodgsonruss.com
A multidisciplinary law firm with over 200 attorneys providing business-focused legal counsel across various areas of law for a range of clients |
582 |
| 22 |
Barclay Damon LLPbarclaydamon.com
A leading regional law firm with 300 attorneys offering customized solutions based on industry knowledge and a deep understanding of clients' businesses |
574 |
| 23 |
Wright County, Minnesotawrightcountymn.gov
The company, located in Minnesota, aims to preserve and enhance citizens' quality of life through quality services and participatory processes |
568 |
| 24 |
The Evergreen Association of WNYevergreenhs.org
A network of nonprofit agencies in Western New York address healthcare needs, serving individuals with chronic diseases, mental health challenges, and marginalized communities |
562 |
| 25 |
Tim Hortontimhortons.com
An internet company located in Buffalo, New York, focused on providing services or products online |
528 |
| 26 |
Evergreen Healthevergreenhs.org
Delivering medical, supportive, and behavioral services to individuals and families in Western New York, focusing on those with chronic illness and underserved communities |
515 |
| 27 |
Acara Solutions, An Aleron Companyacarasolutions.com
A premier provider of recruiting and workforce solutions, specializing in tailored talent solutions that drive business outcomes worldwide |
508 |
| 28 |
Highmark Blue Cross Blue Shield of Western New Yorkhighmark.com
Provider of health insurance services as an independent licensee of the Blue Cross Blue Shield Association, operating in the Western and Northeastern New York region |
505 |
| 29 |
Nissha Medical Technologiesnisshamedical.com
Manufacturing and distributing high-quality medical devices, patient monitoring, surgical consumables, and contract manufacturing services worldwide with advanced technologies. |
484 |
| 30 |
LocalEdgelocaledge.com
A leading provider of online advertising solutions, offering web design, SEM, SEO, social media marketing, and more for businesses nationwide |
474 |
| 31 |
State University of New York College at Buffalobuffalostate.edu
A leading four-year college in the SUNY system with a focus on educating over 10,500 students annually and providing lifelong learning opportunities |
471 |
| 32 |
Derrick Corporationderrick.com
A global company specializing in fine-separation technology for mining, industrial, oil & gas drilling, and civil construction industries since 1951 |
470 |
| 33 |
CITY OF BUFFALObuffalony.gov
Implementing the Buffalo Green Code Unified Development Ordinance citywide after a seven-year community engagement process involving thousands of residents |
459 |
| 34 |
The Buffalo Newsbuffalonews.com
A leading source of local journalism in Western New York, publishing daily in print and online while offering advertising solutions for businesses |
434 |
| 35 |
Lippes Mathias LLPlippes.com
A full-service law firm with nearly 200 attorneys offering legal services regionally, nationally, and internationally across various practice areas |
432 |
| 36 |
AAA Western and Central New Yorkaaa.com
An iconic American organization providing trusted and expert services to ensure peace of mind, make lives easier, and keep communities safe |
429 |
| 37 |
Calspancalspan.com
An industry-leading research and testing partner for aerospace and automotive innovations, specializing in overcoming technical challenges to bring concepts to market |
408 |
| 38 |
GENERAL PHYSICIAN, P.C.gppconline.com
Leading medical group in Western New York, offering top quality care with a wide range of specialties and convenient locations |
402 |
| 39 |
1M1B (1 Million for 1 Billion)activate1m1b.org
A non-profit organization empowering 1 million people to uplift 1 billion out of poverty through skills accelerator programs aligned with UN SDGs |
393 |
| 40 |
Wellpoint Inc
The company is dedicated to revolutionizing healthcare through trustworthy and compassionate solutions |
391 |
| 41 |
Person Centered Services Care Coordination Organization, LLCpersoncenteredservices.com
A care coordination organization providing tailored services for individuals with Intellectual and/or Developmental Disabilities, connecting them to comprehensive care and support for improved quality of life |
389 |
| 42 |
Niagara Frontier Transportation Authorityjobs.nfta.com
A regional transportation authority in Erie and Niagara counties managing bus, rail, airports, police, engineering, and hiring diverse professionals in various fields |
355 |
| 43 |
Just for Kidsjustforkidsonline.org
The company provides enriching before and after school programs that are safe and engaging for school age children |
344 |
| 44 |
Merchants Insurance Groupmerchantsgroup.com
A trusted property & casualty insurance provider for over 100 years, offering financial protection through independent agents in the northeastern US |
338 |
| 45 |
Freed Maxick CPAs, P.C.freedmaxick.com
A top public accounting firm in Western and Upstate New York providing audit, tax, and consulting services to private and public companies |
335 |
| 46 |
City of Buffalo, New Yorkbuffalony.gov
Provides municipal governance, public services, economic development, and community support for residents and businesses in Buffalo, New York. |
334 |
| 47 |
Trusted Nurse Staffingtrustednursestaffing.com
Healthcare staffing agency providing nurses, therapists, speech pathologists, and techs nationwide for permanent, travel, local contracts, or Per Diem opportunities Unmatched pay, locations, and recruiters |
321 |
| 48 |
CNY Fertilitycnyfertility.com
A leading fertility clinic offering high-quality and affordable solutions, welcoming all clients for personalized care using innovative technologies and holistic approaches |
318 |
| 49 |
Golisano Children's Hospital of Buffaloochbuffalo.org
Regional center providing comprehensive pediatric trauma, surgical, and medical care, including neonatal and obstetric services, with a focus on specialized treatment and research |
317 |
| 50 |
Restonicrestonic.com
A leading mattress company producing high quality sleep products for over 80 years, focused on comfort and value for consumers worldwide |
220 |
| 51 |
Professional MBA | University at Buffalo School of Managementbuffalo.edu
The School of Management offers a professional MBA program for working professionals, featuring a hybrid, part-time format for flexibility |
197 |
| 52 |
ROAR Logisticsroarlogistics.com
Global third party logistics provider offering transportation services by rail, ocean, air, and road Headquartered in Buffalo, with multiple offices across the US |
187 |
| 53 |
CloudBluecloudblue.com
Innovative platform enabling companies to thrive in the subscription economy by leveraging digital ecosystems and marketplaces for monetization of B2B cloud subscriptions |
181 |
| 54 |
Synacorsynacor.com
A cloud-based software company providing solutions for global video, content, entertainment, internet, and communications firms to enhance consumer engagement and business scalability |
180 |
| 55 |
SPoT Coffeespotcoffee.com
Designs, builds, and operates neighborhood cafes in the American northeast, offering signature dishes, micro-roasted gourmet coffee, and quality service in cozy locations |
179 |
| 56 |
Matress Firm
A mattress company offering easy buying process, lowest price guarantee, and a wide selection of brands and mattress types in various sizes |
179 |
| 57 |
Trans Americanefl.global
A global logistics company acquired in 2023, specializing in customs, transportation, warehousing, and distribution with a focus on empowering clients |
177 |
| 58 |
Sidelines Sports Bar and Grillsidelinesbuffalony.com
A restaurant and sports bar in downtown Buffalo, NY, serving pub fare, Buffalo favorites, burgers, sandwiches, beers, cocktails, and brunch |
176 |
| 59 |
Ferguson Electricfergusonelectric.com
A leading electric repair and construction company in Western New York, providing quality services for commercial and industrial facilities statewide |
171 |
| 60 |
Ellicott Development Companyellicottdevelopment.com
A Buffalo-based real estate development company specializing in commercial, retail, hospitality, and residential projects with a focus on excellence and local market expertise |
166 |
| 61 |
Adara Home Healthadarahomehealth.com
A home health care agency providing comprehensive services to clients of all ages in their own homes, focused on respect and collaboration |
164 |
| 62 | 163 | |
| 63 |
GHR Travel Nursingghrtravelnursing.com
A family of specialized companies matching professionals to healthcare and community-based positions, supporting rewarding careers and quality healthcare services since 1993 |
160 |
| 64 |
Rupp Pfalzgraf LLCrupppfalzgraf.com
A prominent law firm with 60+ attorneys across NY offering expertise in various practice areas, dedicated to finding effective solutions for clients |
157 |
| 65 |
Neighborhood Health Center of WNY, Inc.nhcwny.org
Integrated healthcare provider in Western New York offering primary care, behavioral health, dentistry, pharmacy services, and more for all patients |
156 |
| 66 |
Windsong Radiology Group PCwindsongwny.com
Specializing in advanced diagnostic imaging and treatment services, we are dedicated to providing high-quality medical care to the community |
156 |
| 67 |
Buffalo AKG Art Museumbuffaloakg.org
A cultural center in Buffalo, NY with a world-class collection of modern and contemporary art, currently closed for construction reopening in 2023 |
155 |
| 68 |
Advance2000linktr.ee
A full-service IT firm providing technology solutions and support to optimize productivity and empower businesses to achieve their full potential |
154 |
| 69 |
Nichols Schoolnicholsschool.org
An independent college preparatory day school in Buffalo, NY, serving grades 5-12 with focus on academics, athletics, arts, leadership, and community service |
154 |
| 70 |
University at Buffalo Pharmacy and Pharmaceutical Sciencespharmacy.buffalo.edu
A renowned pharmacy school with over 130 years of experience, leading in pharmacist and pharmaceutical scientist education, clinical practice, and research |
153 |
| 71 |
Legal Aid Bureau of Buffalo, Inc.legalaidbuffalo.org
The company provides legal aid to vulnerable individuals and families in Western New York through civil, children's, criminal defense, and post-conviction services |
153 |
| 72 |
Ciminelli Real Estate Corporationciminelli.com
Full-service commercial real estate firm providing development, brokerage, facilities management, and property services across multiple states with customer focus. |
152 |
| 73 |
Prairie River Home Care, Inc.adarahomehealth.com
A home healthcare agency in Minnesota providing comprehensive services to clients of all ages in their own homes with a focus on respect and collaboration |
152 |
| 74 |
DIOCESE OF BUFFALOmagnificatbuffalo.org
This company shares personal testimony about experiencing God's perfect plan in life through the journey of Sydnie Perkins |
151 |
| 75 |
Lumsden McCormick CPAlumsdencpa.com
Western NY CPA firm offering traditional accounting, auditing, tax services, and nontraditional services like business advice, strategic planning, and forensic auditing |
149 |
| 76 |
The Martin Groupmartingroup.co
Integrated communications firm with offices in multiple cities, serving clients in various industries including food & beverage, sports, healthcare, financial services, and not-for-profits |
149 |
| 77 |
Lifetime Health Medical Grouplifetimehealth.org
A medical group providing healthcare services has permanently closed some locations, while others have transitioned to different healthcare organizations Visit website for details |
148 |
| 78 |
Walsh Insurancewalshduffield.com
Family-owned insurance agency providing commercial, group benefits, and personal insurance programs to help individuals and businesses manage risk and achieve long-term success |
120 |
| 79 |
BCCbuffaloconstruct.com
A full service construction management firm in Western New York, providing experienced and honest leadership in diverse construction projects |
118 |
| 80 |
SFE Energysfeenergy.com
This company offers price certainty for natural gas and electricity supply to residential and commercial customers in multiple states, including green energy options |
98 |
| 81 |
Pharmacy Benefit Dimensionspbdrx.com
A pharmacy benefit management company focused on providing quality pharmacy benefits at lower costs for customers nationwide since 1998 |
90 |
| 82 |
Pegula Sports and Entertainmentpsentertainment.com
This company streamlines business areas for various sports and entertainment properties, aiming to be a leader in the industry through teamwork and community connections |
90 |
| 83 |
P&G Steel Products Co.pgsteel.com
Family-owned manufacturer of metal stampings, laser cut parts, and CNC machining, with progressive and deep draw capabilities, robotic welding, and value-added metal fabrication services |
73 |
| 84 |
Gurney Becker & Bournegurneyrealestate.com
A full-service real estate and insurance firm in Buffalo Niagara region, providing knowledgeable and attentive service for residential, commercial, and industrial properties |
65 |
| 85 |
Concept Logisticsconceptlogistics.com
Specializes in providing customized logistics solutions to ensure seamless delivery of goods to their destination, with a focus on individual company needs |
60 |
| 86 |
H&R Construction Equipment Partshrparts.com
A leading supplier of new and used heavy equipment parts since 1984, offering quality products and exceptional customer service worldwide |
57 |
| 87 |
Vermed, A division of Nissha Medical TechnologiesVermed.com
A multinational organization manufacturing and distributing high-quality medical consumables for hospitals worldwide, focusing on patient care and innovation |
55 |
| 88 |
Courier Capitalcouriercapital.com
Provider of independent investment advice and financial counsel, offering custom investment management, consulting services, and tailored 401(k) and retirement plans |
43 |
| 89 |
MyRate Energymyrateenergy.com
Provider of competitive natural gas and electricity rates for residential and commercial customers since 2009 |
37 |
| 90 |
Buffalo Engine Componentsbuffaloengine.com
A family-owned company established in 1981, specializing in buying/selling used automotive parts/cores, distributing new transmission parts, and exporting complete motors/transmissions worldwide |
35 |
| 91 |
JMI Consultants, LLCjmiconsultants.com
A full-service energy management firm skilled in simplifying procurement processes, devising complex strategies, and creating partnerships for long-term success and sustainability |
26 |
| 92 |
Sandhill Investment Managementsandhill-im.com
Investment firm specializing in managing over $214 billion in assets with a focus on delivering superior returns through research and risk management |
24 |
| 93 |
Trubee Wealth Advisorstrubeewealth.com
An investment management and financial services company based in Buffalo, NY, providing comprehensive financial solutions to clients |
20 |
| 94 |
Keller Williams Realty Buffalo Northtownsbuffalokw.com
A full-service real estate company in Western New York, helping clients buy, sell, rent, or build homes with highly trained agents and world-class training |
17 |
| 95 |
Irish Jonesirishjones.com
A full-service real estate brokerage specializing in assisting investors with buying, selling, managing, and rehabbing properties, offering streamlined business systems |
13 |
| 96 |
Gronk Fitness Productsgronkfitnessproducts.com
A leading provider of top-quality fitness equipment, accessories, and apparel for athletes and enthusiasts, aiming to inspire healthy lifestyles |
12 |
| 97 |
Sterling Investment Counsel, LLCsterinv.com
Independent SEC Registered Investment Advisor offering comprehensive portfolio management services with strategic asset allocation, risk management, diversification, and long-term wealth building for clients |
9 |
| 98 |
716 Consultants716consultants.com
Empowering individuals to positively impact their family legacy, fostering personal and professional growth through collaboration and innovation in a supportive environment |
8 |
| 99 |
Bouvier Law LLP
A full-service legal team with experienced attorneys and professionals providing top-notch customer service, focused on achieving positive results for clients |
7 |
| 100 |
Willard Machine Corpwillardmachine.com
A machinery company based in Buffalo, New York, specializing in manufacturing and providing machinery equipment and solutions to various industries |
4 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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