Company lists · Data verified August 2026

Top 25 IT consulting companies based in Chicago, United States

Name: IT consulting companies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 373 companies tracked

As of August 2026, this directory lists 373 IT consulting companies based in Chicago, United States, with 15,841 contacts and 6,226 email addresses. New York is the single most-represented city among the companies on the list. Use the directory to identify potential vendors, partners, and sales prospects.

IT consulting companies advise organizations on technology strategy, systems, software, infrastructure, cybersecurity, cloud services, and related IT implementation needs. This list covers companies that provide professional IT consulting services, including technology advisory, systems planning, implementation support, and related services. Ranked by team size, largest first. Data current as of August 28, 2026.

373Companies

15,841Contacts tracked

6,226Verified emails

2,482Mobile numbers

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The 25 largest IT consulting companies based in Chicago, United States

Ranked by team size

Top 25 of 373 IT consulting companies based in Chicago, 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	Bearingpoint	Chicago, IL	5,001-10,000	8,162	3,341
2	LEVIO	Chicago, IL	1,001-5,000	1,425	737
3	Aarete	Chicago, IL	201-500	538	432
4	Comtec Information Systems IT	Chicago, IL	501-1,000	402	57
5	AIM Consulting Group	Chicago, IL	501-1,000	395	187
6	SDI Presence	Chicago, IL	201-500	389	226
7	Nettxio	Chicago, IL	201-500	362	189
8	Maven Wave, An Eviden Company	Chicago, IL	501-1,000	189	68
9	Krasan Consulting Services	Chicago, IL	201-500	168	79
10	RKON	Chicago, IL	51-200	164	111
11	STA Group	Chicago, IL	51-200	141	2
12	Alam, An Accentedge Company	Chicago, IL	201-500	128	1
13	Cuesta Partners	Chicago, IL	51-200	118	58
14	Kenway Consulting	Chicago, IL	51-200	105	59
15	Comtek International	Chicago, IL	201-500	85	2
16	Aberdeen Advisors LLC	Chicago, IL	51-200	84	56
17	Logan Consulting	Chicago, IL	51-200	83	69
18	Wappnet Systems Pvt. LTD	Chicago, IL	51-200	83	12
19	Make Corporation	Chicago, IL	51-200	75	3
20	Diversified Systems.com	Chicago, IL	51-200	61	18
21	Adifice Technologies	Chicago, IL	51-200	61	2
22	DTI Diversified Technology INC	Chicago, IL	51-200	60	27
23	Golok Global	Chicago	201-500	51	1
24	Liberty Advisor Group	Chicago, IL	201-500	45	30
25	Mars-Technominds, INC	Chicago, IL	51-200	43	15

Showing 25 of 373 IT consulting companies based in Chicago, United States

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IT consulting companies based in Chicago, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 989 HQs

2,482Contacts with mobile numbers

44Emails re-verified in last 30 days

Companies by employee count

1-10

183

11-50

112

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

IT consulting companies by metro in the United States

Metro	Companies
IT consulting companies in New York	989
IT consulting companies in Houston	635
IT consulting companies in Chicago	502
IT consulting companies in Atlanta	501
IT consulting companies in Dallas	500
IT consulting companies in Austin	485
IT consulting companies in Miami	350

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 “IT consulting companies”, with match quality audited by blind human judging, and headquartered in Chicago, 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; 44 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 IT consulting companies are in the directory?

The directory contains 373 IT consulting companies based in Chicago, United States as of August 2026.

How can I find contacts at IT consulting companies?

You can use this directory to review 15,841 contacts and 6,226 email addresses associated with IT consulting companies based in Chicago, United States.

Which city has the most IT consulting companies on the list?

New York is the single most-represented city among the IT consulting companies on the list.

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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.