The 25 largest companies in Pittsford (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	The Bonadio Group bonadio.com A nationally ranked CPA firm offering accounting, tax, and consulting services with a focus on being greater for colleagues, clients, and community	Accounting	🇺🇸 Pittsford	1,071	1978
2	Netsmartz netsmartz.com AI-first digital engineering company helping organizations innovate, modernize, and scale through intelligent technology solutions, software engineering, AI, cloud, data, cybersecurity, and enterprise services.	IT Services and IT Consulting	🇺🇸 Pittsford	1,017	1999
3	GateHouse Media gannett.com The company is a leading publisher of print and online media, offering marketing, media, and business solutions to local and national brands	Media Production	🇺🇸 Pittsford	875	2005
4	Maximus Federal Services, Inc.medicareappeal.com A hospital & health care company based in Pittsford, New York, providing services within the United States	Hospitals and Health Care	🇺🇸 Pittsford	620	n/a
5	Pittsford Central Schools pittsfordschools.org A primary/secondary education company in Pittsford, NY, providing educational services for students to support their academic and personal development	Primary and Secondary Education	🇺🇸 Pittsford	490	n/a
6	LenelS2 buildings.honeywell.com Global leader in advanced physical security solutions, offering access control, video surveillance, and mobile credentialing with web-based, cloud-enhanced technology for various industries	Software Development	🇺🇸 Pittsford	383	1991
7	Pittsford Central School District pittsfordschools.org A top school district founded in 1946, providing quality education and services to over 5,500 students in nine school buildings	Primary and Secondary Education	🇺🇸 Pittsford	158	1946
8	Monroe Plan for Medical Care monroeplan.com A not-for-profit health care organization focused on improving health outcomes and reducing disparities for government sponsored program recipients	Health and Human Services	🇺🇸 Pittsford	155	1970
9	VoltDelta This company provides data-driven contact management solutions to optimize customer journeys, increase revenue, boost retention, and reduce operating costs	Telecommunications	🇺🇸 Pittsford	98	1975
10	KARPUS INVESTMENT MANAGEMENT karpus.com This company focuses on conservative, long-term investment management to preserve capital and help clients build wealth over time through personalized asset allocation	Financial Services	🇺🇸 Pittsford	39	1986
11	Grand Atlas Property Management morgancommunities.com A multifamily property management company with a national presence, focused on providing superior services, ethics, performance, creativity, and social responsibility	Real Estate	🇺🇸 Pittsford	30	n/a
12	Larimer Law larimer-law.com Law firm specializing in eDiscovery and information management services, helping clients manage litigation budgets through efficient document and data practices	Legal Services	🇺🇸 Pittsford	26	2013
13	Alesco Advisors \| an ESL Company alescoadvisors.com Trusted firm providing wealth management, investment advice, asset allocation, and retirement plan consulting for endowments, foundations, retirement plans, and high net worth families	Investment Management	🇺🇸 Pittsford	26	2000
14	Messner Flooring messnerflooring.com A family-owned flooring provider in Rochester, NY offering a wide range of quality products for residential and commercial spaces	Construction	🇺🇸 Pittsford	22	1962
15	LVW Advisors lvwadvisors.com An investment advisory firm offering comprehensive wealth management, financial planning, and consulting services to high net-worth individuals, families, and nonprofit institutions nationwide	Investment Management	🇺🇸 Pittsford	18	2011
16	KidsOutAndAbout.com kidsoutandabout.com A media and marketing platform connecting families to local events, activities, and resources through regional websites, newsletters, and mobile apps	Technology, Information and Media	🇺🇸 Pittsford	17	2001
17	Nexus Capital nexuscapitalco.com Boutique investment advisory firm offering wealth management, asset management, and concierge services to high net worth individuals, institutions, and independent advisors	Financial Services	🇺🇸 Pittsford	16	2017
18	Twin Advertising twinadvertising.com An award-winning brand development and marketing firm specializing in digital and traditional strategies, focusing on retail to connect brands with customers and increase sales	Advertising Services	🇺🇸 Pittsford	13	n/a
19	Finger Lakes Coffee Roasters fingerlakescoffee.com A New York-based food & beverage company specializing in coffee roasting and distribution	Food and Beverage Services	🇺🇸 Pittsford	12	n/a
20	The Leighton Agency Inc theleightonagency.com Local independent agency in Pittsford NY, serving Greater Monroe County Region for 17 years Providing affordable auto, home, business insurance with excellent customer service	Insurance	🇺🇸 Pittsford	11	1982
21	Optics Technology, Inc.opticstechnology.com A world leader in optical components and assemblies, specializing in micro/miniature optics with precise machining capabilities for various industries	Defense and Space Manufacturing	🇺🇸 Pittsford	10	1986
22	FSB Realty Services, LLC fsbrealty.com A full-service brokerage firm specializing in commercial real estate transactions, offering personalized guidance and expertise in tenant/landlord representation, property management, and development	Real Estate	🇺🇸 Pittsford	5	1987
23	Cypher Communications cyphercommunications.net A full-service IT consulting firm specializing in Directv, internet, and phone services for lodging, commercial, and multi-dwelling unit markets Specializes in DIRECTV installation and deployment	Telecommunications	🇺🇸 Pittsford	5	n/a
24	Birnbaum Companies birnbaumcompanies.com A multi-generational, full-scale real estate company that expanded into multiple states, property types, and now ventures into obstacle course training	Leasing Non-residential Real Estate	🇺🇸 Pittsford	3	2017
25	The Bajorek Agency gobajorek.com An upstate New York property and casualty agency writing insurance for various carriers and specializing in hard-to-place risks and motorcycle insurance	Insurance	🇺🇸 Pittsford	2	n/a

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.

Build your own list, free

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