Company lists · Data refreshed September 2026

Top 25 Full-service consulting firms based in Chicago, United States

Name: Full-service consulting firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 496 companies tracked

RevenueBase identified 496 full-service consulting firms headquartered in Chicago, United States as of September 2026 and tracks 21,672 professional contacts across them, including 8,485 with verified work emails. Across the United States, New York is the largest hub for this category (935 companies); Chicago follows with 496.

This list covers full-service consulting firms headquartered in Chicago, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

496Companies

21,672Contacts tracked

8,485Verified emails

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The 25 largest full-service consulting firms based in Chicago, United States

Ranked by team size

Top 25 of 496 full-service consulting firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to full-service consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kearney	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	6,978 contacts →
	Partial evidence “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Source: RevenueBase Database · checked Sep 30, 2026
2	Accenture Strategy & Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,514 contacts →
	Indirect evidence “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Source: RevenueBase Database · checked Sep 30, 2026
3	Sikich	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,688 contacts →
	Partial evidence “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Source: RevenueBase Database · checked Sep 30, 2026
4	Navigant	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,029 contacts →
	Partial evidence “Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.” Source: RevenueBase Database · checked Sep 30, 2026
5	DLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	546 contacts →
	Partial evidence “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Source: RevenueBase Database · checked Sep 30, 2026
6	Aarete	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	543 contacts →
	Partial evidence “AArete is a global management and technology consulting firm specializing in driving profitability improvement, digital transformation, and strategy & change for clients.” Source: RevenueBase Database · checked Sep 30, 2026
7	Weaver Consultants Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	382 contacts →
	Indirect evidence “From its inception in 1991, Weaver Consultants Group has been founded upon the tenets of attentive and responsive customer service, strong project management, and solid internal…” Source: RevenueBase Database · checked Sep 30, 2026
8	Beyond KEY	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	363 contacts →
	Indirect evidence “Our Journey of Growth, Trust, and Purpose Two decades ago, Beyond Key started with a vision not just to solve business problems with technology, but to create lasting impact.” Source: RevenueBase Database · checked Sep 30, 2026
9	Prescouter, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	325 contacts →
	Partial evidence “PreScouter is a strategy consulting firm supporting innovation-minded clients with challenges related to strategy, science, technology, and growth.” Source: RevenueBase Database · checked Sep 30, 2026
10	PTS Consulting Services Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	251 contacts →
	Partial evidence “Overview PTS Consulting Services (People Technology Services), is a firm that specializes in providing IT consulting and Business consulting services.” Source: RevenueBase Database · checked Sep 30, 2026
11	Healthscape Advisors, A Chartis Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	224 contacts →
	Partial evidence “HealthScape Advisors, a Chartis Company is a management consulting firm dedicated to serving clients in the healthcare industry.” Source: RevenueBase Database · checked Sep 30, 2026
12	Accretive Solutions	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	501-1,000	217 contacts →
	Indirect evidence “Your World.” Source: RevenueBase Database · checked Sep 30, 2026
13	RKON	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	163 contacts →
	Indirect evidence “Since 1998, RKON has delivered IT Transformation helping private equity and enterprise firms achieve Quiet IT from vision to execution.” Source: RevenueBase Database · checked Sep 30, 2026
14	STA Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	143 contacts →
	Indirect evidence “Strategies For Business Transformation STA Group offers end-to-end business, technology and digital strategy for today’s leading businesses.” Source: RevenueBase Database · checked Sep 30, 2026
15	Cuesta Partners	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	122 contacts →
	Indirect evidence “We believe in the power of technology to create sustained, differentiated advantage.” Source: RevenueBase Database · checked Sep 30, 2026
16	Clarity Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	121 contacts →
	Strong evidence “Clarity Partners is a privately held full-service management and technology consulting firm.” Source: RevenueBase Database · checked Sep 30, 2026
17	Diamond Management & Technology Consultants	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	501-1,000	114 contacts →
	Partial evidence “Diamond is a management and technology consulting firm.” Source: RevenueBase Database · checked Sep 30, 2026
18	W. Capra	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	108 contacts →
	Indirect evidence “W.” Source: RevenueBase Database · checked Sep 30, 2026
19	HBR Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	501-1,000	106 contacts →
	Partial evidence “HBR Consulting is now part of Harbor.” Source: RevenueBase Database · checked Sep 30, 2026
20	CGN Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	104 contacts →
	Partial evidence “A Chicago-based firm with offices in Mexico, the UK, France, Turkey, India, and China, providing supply chain, digital, strategy and transformation consulting services to…” Source: RevenueBase Database · checked Sep 30, 2026
21	Logan Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	84 contacts →
	Partial evidence “Logan Consulting helps manufacturing, distribution and service companies use technology to reduce costs and increase sales resulting in higher company profits.” Source: RevenueBase Database · checked Sep 30, 2026
22	Bostrom	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	51-200	72 contacts →
	Partial evidence “Bostrom is a professional services firm offering comprehensive management, consulting and outsourcing to the not-for-profit community.” Source: RevenueBase Database · checked Sep 30, 2026
23	The Keystone Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	11-50	63 contacts →
	Partial evidence “The Keystone Group is a results-oriented management consulting firm.” Source: RevenueBase Database · checked Sep 30, 2026
24	TRC Advisory	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	11-50	62 contacts →
	Partial evidence “TRC Advisory is a boutique consulting firm focused on working with clients to define and deploy the strategies and tactics necessary to consistently outperform competitors and…” Source: RevenueBase Database · checked Sep 30, 2026
25	Bluerock	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	201-500	53 contacts →
	Indirect evidence “BlueROCK was founded on the premise that all companies should have a trusted partner for unbiased technology advice and guidance.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: full-service consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names full-service consulting firms.
Partial evidence: Its own public description names part of full-service consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name full-service consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 496 full-service consulting firms based in Chicago, United States

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Full-service consulting firms based in Chicago, United States at a glance

As of Sep 30, 2026

39.2%Verified-email coverage

43.7Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

337

11-50

112

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 496 companies.

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 full-service consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “full-service consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names full-service consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among full-service consulting firms, and records with no verified work email. Companies headquartered outside Chicago 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 its RevenueBase Smart Search 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, 8,485 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 30, 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.

Full-service consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names full-service consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many full-service consulting firms are there based in Chicago, United States?

RevenueBase identified 496 full-service consulting firms headquartered in Chicago, 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?

Kearney, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most full-service consulting firms?

New York leads the United States with 935 headquartered companies, followed by Chicago (496) and Atlanta (479).

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 8,485 verified decision-maker contacts tracked across these 496 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 30, 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 Smart Search, 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.