Company lists · Data refreshed September 2026

Top 24 IT consulting services based in the United States

Name: IT consulting services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 29,783 companies tracked

RevenueBase identified 29,783 IT consulting services headquartered in the United States as of September 2026 and tracks 777,364 professional contacts across them, including 243,156 with verified work emails and 186,942 with mobile numbers. New York is the largest hub.

This list covers IT consulting services 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

29,783Companies

777,364Contacts tracked

243,156Verified emails

186,942Mobile numbers

Unlock all 29,783 companies Free signup · no credit card · 500 free credits

The 24 largest IT consulting services based in the United States

Ranked by team size

Top 24 of 29,783 IT consulting services 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 consulting services: 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.
#	Company	Headquarters	Employees	Contacts
1	DXC TechnologyPartial evidence	Ashburn, VA, United StatesHQ checked Sep 4, 2026	10001+	82,827
	“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Source: company website · checked Sep 4, 2026
2	CDWIndirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 4, 2026	10001+	13,120
	“At CDW, we know how to make technology work so people can do great things.” Source: company website · checked Sep 4, 2026
3	GuidehouseIndirect evidence	Mclean, SD, United StatesHQ checked Sep 4, 2026	10001+	12,933
	“Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: company website · checked Sep 4, 2026
4	Apex SystemsIndirect evidence	Glen Allen, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	12,222
	“Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Source: company website · checked Sep 4, 2026
5	ICFIndirect evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	5,001-10,000	9,492
	“ICF is a leading global solutions and technology provider.” Source: company website · checked Sep 4, 2026
6	World Wide TechnologyIndirect evidence	Maryland Heights, AK, United StatesHQ checked Sep 4, 2026	10001+	9,138
	“We are thinkers and doers.” Source: company website · checked Sep 4, 2026
7	Comcast BusinessIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 4, 2026	10001+	8,346
	Source: company website · checked Sep 4, 2026
8	AricentIndirect evidence	Santa Clara, CA, United StatesHQ checked Sep 4, 2026	10001+	4,317
	“Aricent is now Altran, delivering industry innovations at future speed.” Source: company website · checked Sep 4, 2026
9	ETEAMIndirect evidence	Somerset, CA, United StatesHQ checked Sep 4, 2026	n/a	3,271
	“For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.” Source: company website · checked Sep 4, 2026
10	Quest SoftwareIndirect evidence	Austin, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	3,211
	“At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: company website · checked Sep 4, 2026
11	Visionet Systems INCIndirect evidence	Cranbury, NJ, United StatesHQ checked Sep 4, 2026	10001+	3,113
	“Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Source: company website · checked Sep 4, 2026
12	Genpact Headstrong Capital MarketsStrong evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	10001+	3,102
	“Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Source: company website · checked Sep 4, 2026
13	AHEADIndirect evidence	Chicago, WI, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,990
	“AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Source: company website · checked Sep 4, 2026
14	Compunnel INCIndirect evidence	Princeton, United StatesHQ checked Sep 4, 2026	5,001-10,000	2,568
	“Compunnel serves as a global partner for talent, digital, and cybersecurity solutions, designed to help enterprises staff critical roles, modernize technology, and strengthen…” Source: company website · checked Sep 4, 2026
15	Oxford Global ResourcesIndirect evidence	Beverly, VA, United StatesHQ checked Sep 4, 2026	501-1,000	2,561
	“Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.” Source: company website · checked Sep 4, 2026
16	People Tech Group INCIndirect evidence	Redmond, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,409
	“People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Source: company website · checked Sep 4, 2026
17	BeyondsoftStrong evidence	Bellevue, WA, United StatesHQ checked Sep 4, 2026	501-1,000	2,358
	“Beyondsoft Consulting is a leading global mid-sized business IT and consulting company that combines modern technologies and proven methodologies to tailor solutions that move…” Source: company website · checked Sep 4, 2026
18	CTGPartial evidence	Amherst, NY, United StatesHQ checked Sep 4, 2026	5,001-10,000	2,259
	“CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Source: company website · checked Sep 4, 2026
19	OPTIVIndirect evidence	Leawood, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,206
	“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: company website · checked Sep 4, 2026
20	Jade GlobalPartial evidence	San Jose, PA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,891
	“Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Source: company website · checked Sep 4, 2026
21	NEW ERA TechnologyIndirect evidence	West Chester, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,842
	“New Era Technology is the AI, application, and infrastructure partner that simplifies, secures, and scales technology across modern work environments.” Source: company website · checked Sep 4, 2026
22	Tech MahindraIndirect evidence	Streetman, TX, United StatesHQ checked Sep 4, 2026	n/a	1,786
	Source: company website · checked Sep 4, 2026
23	Eplus INCPartial evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	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, 2026
24	Quadrant TechnologiesPartial evidence	Redmond, NC, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,676
	“Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Source: company website · checked Sep 4, 2026

Showing 24 of 29,783 IT consulting services based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 243,156 reachable decision-makers.

Free signup · no credit card

See all 29,783 companies

IT consulting services based in the United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 976 HQs

186,942Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

16,276

11-50

8,565

51-200

3,526

201-500

824

501-1,000

272

1,001-5,000

153

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

20,195

61–90

131,303

90–180

87,759

180+

3,899

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 consulting services, 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 consulting services”. 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 consulting services, 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, 243,156 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 consulting services by metro

Frequently asked

How many IT consulting services are there based in the United States?

RevenueBase identified 29,783 IT consulting services 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?

DXC Technology, headquartered in Ashburn, tops this list with the largest team on record.

Which city has the most IT consulting services?

New York leads with 976 headquartered companies, followed by Houston (633) and Atlanta (521).

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 243,156 verified decision-maker contacts tracked across these 29,783 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 29,783 IT consulting services based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

IT consulting services by geography

Browse the directory

Browse: Companies home · All United States lists · All IT consulting services 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.