Company lists · Data refreshed September 2026

Top 25 IT consultancy services based in the United States

Name: IT consultancy 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 27, 2026 30,268 companies tracked

RevenueBase identified 30,268 company matches for IT consultancy services associated with the United States as of September 2026 and tracks 1,712,644 professional contacts across them, including 497,567 with verified work emails and 331,539 with mobile numbers. New York is the largest hub.

This list covers company matches for IT consultancy services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

30,268Companies

1,712,644Contacts tracked

497,567Verified emails

331,539Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest IT consultancy services based in the United States

Ranked by team size

Top 25 of 30,268 company matches for IT consultancy services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Sep 27, 2026	10001+	82,768 contacts →
	Exact match “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Kyndryl	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	45,903 contacts →
	Exact match “We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	EXL	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	40,100 contacts →
	Exact match “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	UST	Exact match	Aliso Viejo, CA, United StatesHQ recorded Sep 27, 2026	10001+	34,875 contacts →
	Exact match “UST is a global digital transformation solutions provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Conduent	Exact match	Florham Park, NJ, United StatesHQ recorded Sep 27, 2026	10001+	30,315 contacts →
	Exact match “Conduent delivers digital business solutions and services spanning the commercial, government and transportation spectrum – creating valuable outcomes for its clients and the…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Virtusa	Exact match	Southborough, MA, United StatesHQ recorded Sep 27, 2026	10001+	29,613 contacts →
	Exact match “Virtusa is a global product and platform engineering services company that makes experiences better with technology.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Sep 27, 2026	10001+	24,693 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	General Dynamics Information Technology	Exact match	Falls Church, VA, United StatesHQ recorded Sep 27, 2026	10001+	23,974 contacts →
	Exact match “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	NTT Data North America	Exact match	Plano, TX, United StatesHQ recorded Sep 27, 2026	10001+	22,390 contacts →
	Exact match “NTT DATA, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Unisys	Exact match	Blue Bell, PA, United StatesHQ recorded Sep 27, 2026	10001+	18,676 contacts →
	Exact match “Unisys is a global technology solutions company that powers breakthroughs for the world’s leading organizations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	ZS	Exact match	Evanston, IL, United StatesHQ recorded Sep 27, 2026	10001+	16,896 contacts →
	Exact match “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Sep 27, 2026	10001+	13,155 contacts →
	Exact match “At CDW, we know how to make technology work so people can do great things.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Insight	Exact match	Chandler, AZ, United StatesHQ recorded Sep 27, 2026	10001+	12,899 contacts →
	Exact match “Insight Enterprises, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Infinite Computer Solutions	Exact match	Rockville, MD, United StatesHQ recorded Sep 27, 2026	10001+	12,891 contacts →
	Exact match “Infinite is a.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Synechron	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	12,820 contacts →
	Exact match “At Synechron, we believe in the power of digital to transform businesses for the better.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 27, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Apex Systems	Exact match	Glen Allen, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	12,231 contacts →
	Exact match “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Thoughtworks	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 2026	10001+	11,634 contacts →
	Exact match “We are a global technology consultancy that delivers extraordinary impact by blending design, engineering and AI expertise.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Softserve	Exact match	Austin, TX, United StatesHQ recorded Sep 27, 2026	10001+	11,123 contacts →
	Exact match “SoftServe is a technology services company specializing in autonomous enterprises with capabilities in AI-native applications, physical and agentic AI, cloud and data solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 27, 2026	10001+	10,032 contacts →
	Exact match “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	ICF	Exact match	Reston, VA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	9,459 contacts →
	Exact match “ICF is a leading global solutions and technology provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 27, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Marvell Technology	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	8,984 contacts →
	Exact match “We believe that infrastructure powers progress.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	HTC Global Services	Exact match	Troy, MI, United StatesHQ recorded Sep 27, 2026	10001+	8,866 contacts →
	Exact match “HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	8,779 contacts →
	Exact match “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT consultancy services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 30,268 IT consultancy services based in the United States

See the full list, filter by size, metro and specialty, and access 497,567 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

IT consultancy services based in the United States at a glance

As of Sep 27, 2026

29.1%Verified-email coverage

19.4%Mobile-number coverage

56.6Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

14,421

11-50

9,426

51-200

4,342

201-500

1,154

501-1,000

427

1,001-5,000

302

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 29.0d

284,2560–30

187,33431–60

15,20661–90

1,07090–180

9,701180+

Company record updated

Median 90.0d

00–30

239,62431–60

626,69261–90

744,35190–180

101,977180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “IT consultancy services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 497,567 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

IT consultancy services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT consultancy services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 30,268 company matches for IT consultancy services associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

DXC Technology tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT consultancy services?

New York leads with 1083 company records, followed by Houston (652) and Dallas (532).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 497,567 professional contacts with verified work emails tracked across these 30,268 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 30,268 IT consultancy services based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

IT consultancy services by geography

Browse the directory

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.