Company lists · Data verified August 2026

Top 25 Enterprise IT consulting firms based in the United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 30,312 companies tracked

There are 30,312 enterprise IT consulting firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 856,177 professional contacts across them, including 260,761 with verified work emails and 204,249 with mobile numbers. New York is the largest hub.

This list covers enterprise IT consulting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

30,312Companies

856,177Contacts tracked

260,761Verified emails

204,249Mobile numbers

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The 25 largest enterprise IT consulting firms based in the United States

Ranked by team size

Top 25 of 30,312 enterprise IT consulting firms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	CGI	Knoxville, TN	10001+	86,818	35,016
2	DXC Technology	Ashburn, VA	10001+	82,827	25,181
3	CDW	Vernon Hills, IL	10001+	13,120	6,674
4	Guidehouse	Vermillion, SD	10001+	12,933	5,876
5	Apex Systems	Virginia Beach, VA	1,001-5,000	12,222	2,465
6	Movate	Plano, TX	10001+	12,175	988
7	Slalom	Walnut Creek, CA	10001+	9,963	7,651
8	Endava	Dallas	10001+	9,531	5,875
9	World Wide Technology	Anchorage, AK	10001+	9,138	6,190
10	Visionet Systems INC	Cranbury, NJ	10001+	3,113	495
11	Genpact Headstrong Capital Markets	Reston, VA	10001+	3,102	3
12	The Judge Group	Tampa, FL	1,001-5,000	2,196	467
13	West Monroe	San Francisco, CA	1,001-5,000	2,111	1,497
14	Teknowledge	Colorado Springs	1,001-5,000	2,102	642
15	Jade Global	North Wales, PA	1,001-5,000	1,891	777
16	Quadrant Technologies	Charlotte, NC	1,001-5,000	1,676	346
17	Trace3	Phoenix, AZ	1,001-5,000	1,336	990
18	Long View Systems	Denver, CO	1,001-5,000	1,184	589
19	Damco Solutions	Plainsboro, NJ	1,001-5,000	1,103	297
20	Eliassen Group	Catonsville, MD	1,001-5,000	960	457
21	Ionidea	Fairfax, VA	1,001-5,000	780	105
22	Skillmine Technology	New York, NY	1,001-5,000	763	175
23	Xavient Digital	Atlanta, GA	1,001-5,000	749	20
24	Primus Global Services	Irving, TX	1,001-5,000	714	72
25	Emtec INC	Athens, AL	1,001-5,000	654	286

Showing 25 of 30,312 enterprise IT consulting firms based in the United States

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Enterprise IT consulting firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 1009 HQs

204,249Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

15,255

11-50

9,343

51-200

4,114

201-500

971

501-1,000

300

1,001-5,000

179

10001+

Enterprise IT consulting firms by metro

Metro	Companies
Enterprise IT consulting firms in New York	1009
Enterprise IT consulting firms in Houston	677
Enterprise IT consulting firms in Atlanta	551
Enterprise IT consulting firms in Dallas	507
Enterprise IT consulting firms in Chicago	499
Enterprise IT consulting firms in Austin	480
Enterprise IT consulting firms in Washington	378

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise IT consulting firms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 30,312 enterprise IT consulting firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

CGI, headquartered in Knoxville, tops this list with the largest team on record.

Which city has the most enterprise IT consulting firms?

New York leads with 1009 headquartered companies, followed by Houston (677) and Atlanta (551).

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 260,761 verified decision-maker contacts tracked across these 30,312 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.