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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
8,813Companies
115,748Contacts tracked
46,695Verified emails
44,979Mobile numbers
Unlock all 8,813 companies Free signup · no credit card · 500 free credits

The 25 largest IT managed service providers based in the United States

Ranked by team size
Top 25 of 8,813 IT managed service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT managed service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
PomeroyPartial evidence
Hebron, KY, United StatesHQ checked Sep 4, 20261,001-5,0002,466

“Technology is mission-critical to your business so it must work, continuously.”

Source: company website · checked Sep 4, 2026
2
GURUStrong evidence
Rockville, MD, United StatesHQ checked Sep 4, 2026n/a1,868

“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, 2026
3
Eplus INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 20261,001-5,0001,783

“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, 2026
4
ThriveIndirect evidence
Foxborough, NC, United StatesHQ checked Sep 4, 20261,001-5,0001,418

“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, 2026
5
Marco TechnologiesIndirect evidence
St. Cloud, KY, United StatesHQ checked Sep 4, 20261,001-5,0001,213

“At Marco, we're all about making technology work for you (and not the other way around).”

Source: company website · checked Sep 4, 2026
6
COX BusinessIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 4, 202610001+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, 2026
7
CCB TechnologyPartial evidence
Racine, WI, United StatesHQ checked Sep 4, 2026n/a1,015

“CCB Technology provides award-winning IT support and project services to customers nationwide.”

Source: company website · checked Sep 4, 2026
8
Buchanan TechnologiesPartial evidence
Grapevine, KS, United StatesHQ checked Sep 4, 2026501-1,000817

“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, 2026
9
TPXIndirect evidence
Austin, CA, United StatesHQ checked Sep 4, 20261,001-5,000767

“TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.”

Source: company website · checked Sep 4, 2026
10
ApptixIndirect evidence
New York, NY, United StatesHQ checked Sep 4, 2026n/a760

“Apptix was acquired by Fusion Connect in 2016.”

Source: company website · checked Sep 4, 2026
11
LogicalisusIndirect evidence
Troy, MI, United StatesHQ checked Sep 4, 2026501-1,000705

“We are Architects of Change.”

Source: company website · checked Sep 4, 2026
12
IT SolutionsPartial evidence
Fort Washington, LA, United StatesHQ checked Sep 4, 2026501-1,000680

“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, 2026
13
Visual Edge ITIndirect evidence
North Canton, OH, United StatesHQ checked Sep 4, 20261,001-5,000645

“ABOUT VISUAL EDGE, INC.”

Source: company website · checked Sep 4, 2026
14
NICPartial evidence
Los Angeles, CA, United StatesHQ checked Sep 4, 2026n/a578

“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, 2026
15
IntegrisPartial evidence
Cranbury Township, CO, United StatesHQ checked Sep 4, 2026501-1,000575

“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, 2026
16
Marble BOXPartial evidence
Chicago, IL, United StatesHQ checked Sep 4, 2026501-1,000531

“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, 2026
17
Vc3Strong evidence
Columbia, TN, United StatesHQ checked Sep 4, 2026501-1,000517

“VC3 is a managed IT and cybersecurity services provider serving organizations throughout the US and Canada.”

Source: company website · checked Sep 4, 2026
18
Blue MantisPartial evidence
Portsmouth, MA, United StatesHQ checked Sep 4, 2026201-500511

“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, 2026
19
Ntiva, INCIndirect evidence
Mclean, LA, United StatesHQ checked Sep 4, 2026501-1,000498

“At Ntiva, growing people (our employees, partners, and clients) is our mission.”

Source: company website · checked Sep 4, 2026
20
MCPCStrong evidence
Cleveland, MI, United StatesHQ checked Sep 4, 2026201-500482

“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, 2026
21
XTIUMStrong evidence
New York, NY, United StatesHQ checked Sep 4, 2026501-1,000475

“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, 2026
22
MeriplexIndirect evidence
Houston, CO, United StatesHQ checked Sep 4, 2026501-1,000444

“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, 2026
23
Cmit SolutionsPartial evidence
Austin, TX, United StatesHQ checked Sep 4, 2026501-1,000434

“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, 2026
24
CCSIndirect evidence
Hauppauge, RI, United StatesHQ checked Sep 4, 2026201-500413

“CCS is a premier provider of technology solutions and services to organizations throughout the US.”

Source: company website · checked Sep 4, 2026
25
Global Data SystemsStrong evidence
Lafayette, LA, United StatesHQ checked Sep 4, 202651-200411

“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, 2026

Showing 25 of 8,813 IT managed service providers based in the United States

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IT managed service providers based in the United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 250 HQs
44,979Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
4,987
11-50
3,022
51-200
576
201-500
112
501-1,000
41
1,001-5,000
21
5,001-10,000
2
10001+
6

Verified emails by last verification

0–30
0
31–60
3,993
61–90
25,400
90–180
17,052
180+
250

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

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.

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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.