Company lists · Data refreshed September 2026
Top 25 IT managed service providers based in the United States
RevenueBase identified 8,813 IT managed service providers headquartered in the United States as of September 2026 and tracks 115,748 professional contacts across them, including 46,695 with verified work emails and 44,979 with mobile numbers. New York is the largest hub.
This list covers IT managed service providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest IT managed service providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | PomeroyPartial evidence | 2,466 | |||
“Technology is mission-critical to your business so it must work, continuously.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,868 | ||||
“Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,783 | ||||
“ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | ThriveIndirect evidence | 1,418 | |||
“Thrive is a NextGen 3.0 global technology outsourcing provider that empowers small and mid-market organizations to transform their technology into a strategic advantage.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | Marco TechnologiesIndirect evidence | 1,213 | |||
“At Marco, we're all about making technology work for you (and not the other way around).” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,091 | ||||
“Cox Business provides a wide range of technology solutions for businesses of all sizes with reliable, scalable products and services tailored to your unique needs.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,015 | ||||
“CCB Technology provides award-winning IT support and project services to customers nationwide.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 817 | ||||
“As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 767 | ||||
“TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 760 | ||||
“Apptix was acquired by Fusion Connect in 2016.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 705 | ||||
“We are Architects of Change.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 680 | ||||
“With 30 years of experience as a trusted managed services provider, we're your dedicated partner in navigating the complex world of technology, so you can focus on growing your…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | Visual Edge ITIndirect evidence | 645 | |||
“ABOUT VISUAL EDGE, INC.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | NICPartial evidence | 578 | |||
“NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 575 | ||||
“Integris is a national leader in future-ready Managed Services, delivering innovative solutions that drive digital maturity for small and midsize businesses.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | Marble BOXPartial evidence | 531 | |||
“Marble Box provides managed services for independent insurance agencies for functions, that while vital to the operation of a successful insurance agency, take resources away from…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 517 | ||||
“VC3 is a managed IT and cybersecurity services provider serving organizations throughout the US and Canada.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 511 | ||||
“Blue Mantis is a security-first, IT solutions and services provider with a 30+ year history of successfully helping clients achieve business modernization by applying…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 498 | ||||
“At Ntiva, growing people (our employees, partners, and clients) is our mission.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | MCPCStrong evidence | 482 | |||
“MCPC is a leading managed service provider offering end-to-end IT solutions designed to optimize and secure your technology infrastructure.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 475 | ||||
“XTIUM, created through the business combination of ATSG and Evolve IP, delivers a modern security-first approach to the managed IT services experience.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 444 | ||||
“If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 434 | ||||
“CMIT Solutions is a premier IT solution company dedicated to delivering enterprise-class IT support to businesses across North America.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 413 | ||||
“CCS is a premier provider of technology solutions and services to organizations throughout the US.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 411 | ||||
“Global Data Systems, GDS is a full-service Managed IT company who, for more than 35 years, has helped organizations boost the bottom line and streamline operations through the…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 8,813 IT managed service providers based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 46,695 reachable decision-makers.
Free signup · no credit card
IT managed service providers based in the United States at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT managed service providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “IT managed service providers”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among IT managed service providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 46,695 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
IT managed service providers by metro
- IT managed service providers in New York250
- IT managed service providers in Houston181
- IT managed service providers in Miami108
- IT managed service providers in Chicago106
- IT managed service providers in Austin100
- IT managed service providers in Dallas99
- IT managed service providers in Los Angeles95
- IT managed service providers in Atlanta91
- IT managed service providers in San Diego83
- IT managed service providers in Tampa75
- IT managed service providers in Charlotte67
- IT managed service providers in Phoenix66
- IT managed service providers in Las Vegas62
- IT managed service providers in San Antonio62
- IT managed service providers in Irvine61
- IT managed service providers in Denver53
- IT managed service providers in Orlando53
- IT managed service providers in San Francisco47
- IT managed service providers in Nashville41
- IT managed service providers in Portland40
- IT managed service providers in Seattle40
- IT managed service providers in San Jose38
- IT managed service providers in Washington37
- IT managed service providers in Fort Lauderdale34
- IT managed service providers in Frisco34
- IT managed service providers in Louisville33
- IT managed service providers in Pittsburgh33
- IT managed service providers in Wilmington32
- IT managed service providers in Columbus31
- IT managed service providers in Jacksonville31
- IT managed service providers in Plano31
- IT managed service providers in Cincinnati28
- IT managed service providers in Indianapolis28
- IT managed service providers in Omaha27
- IT managed service providers in Oklahoma City26
- IT managed service providers in Raleigh26
- IT managed service providers in Birmingham25
- IT managed service providers in Fort Worth25
- IT managed service providers in Newark25
Frequently asked
How many IT managed service providers are there based in the United States?
RevenueBase identified 8,813 IT managed service providers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Pomeroy, headquartered in Hebron, tops this list with the largest team on record.
Which city has the most IT managed service providers?
New York leads with 250 headquartered companies, followed by Houston (181) and Miami (108).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 46,695 verified decision-maker contacts tracked across these 8,813 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.
Ready to reach these companies? Verified emails and direct dials for all 8,813 IT managed service providers based in the United States. Start with a free account, no credit card.
Get the full listRelated lists
IT managed service providers by geography
- IT managed service providers based in the United Kingdom
- IT managed service providers based in Canada
- IT managed service providers based in Australia
- IT managed service providers based in Brazil
- IT managed service providers based in Germany
- IT managed service providers based in France
- IT managed service providers based in South Africa
- IT managed service providers based in the Netherlands
- IT managed service providers based in Italy
- IT managed service providers based in Spain
- IT managed service providers based in Belgium
- IT managed service providers based in New Zealand
Browse the directory
Browse: Companies home · All United States lists · All IT managed service providers lists · New lists
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT managed service providers based in the United Kingdom
- IT managed service providers based in Canada
- IT managed service providers based in Australia
- IT managed service providers based in Brazil
- IT managed service providers based in Germany
- IT managed service providers based in France