Company lists · Data refreshed September 2026

Top 20 Professional service companies based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 47 companies tracked

RevenueBase identified 47 company matches for professional service companies associated with Chicago, United States as of September 2026 and tracks 2,777 professional contacts across them, including 1,306 with verified work emails. Across the United States, New York is the largest hub for this category (89 companies); Chicago has 47.

This list covers company matches for professional service companies associated with Chicago, 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 20, 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 20, 2026 How this list was built

47Companies

2,777Contacts tracked

1,306Verified emails

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The 20 largest professional service companies based in Chicago, United States

Ranked by team size

Top 20 of 47 company matches for professional service companies based in Chicago, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	Sikich	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,688 contacts →
	Exact match “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	DLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	201-500	546 contacts →
	Exact match “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Accretive Solutions	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	501-1,000	217 contacts →
	Exact match “Your World.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Greentarget Global Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	54 contacts →
	Exact match “We believe our strength is in helping clients direct-rather than react to-the ongoing conversations about them in the marketplace.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Bronswick Benjamin P.C	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	42 contacts →
	Exact match “Bronswick Benjamin does not see your business or you as a series of tasks.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Adelfia LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	36 contacts →
	Exact match “ADELFIA LLC (the Company) was formed by a group of individuals who possess a wealth of accounting, auditing and industry experience especially in the public sector market, private…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Source Consulting Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	29 contacts →
	Exact match “Source Consulting Group LLC is the premier full-service consulting firm focusing exclusively on the strategic and operational business process and technology needs of legal and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	CTS Impact	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	29 contacts →
	Exact match “CTS Impact is a hands-on business consulting firm focused on delivering practical solutions to complex business issues in the areas of Finance, IT and Human Resources.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Victura Consulting	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	13 contacts →
	Exact match “Victura Consulting is a Chicago-based financial consulting firm focused on advising companies to successfully perform contracts for the U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Schultz & Chez, LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	8 contacts →
	Exact match “HISTORY Schultz & Chez (“S&C”) has its roots in a firm started on LaSalle Street in 1951 by Jerome Schultz and Lawrence Chez.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Odoni Partners LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	8 contacts →
	Exact match “Odoni Partners is a Chicago-based public accounting & consulting firm that has served an expansive and diverse client base comprising all types of business and individual clients…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	GAP Resources, LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	6 contacts →
	Exact match “GAP Resources provides the RIGHT resources at the RIGHT time at the RIGHT cost.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	E.C. Ortiz & Co., LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	51-200	6 contacts →
	Exact match “We are a group of diverse professionals providing efficient, committed and outstanding services to our clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Moshe Klein & Associates	Exact match	Chicago, United StatesHQ recorded Sep 20, 2026	11-50	3 contacts →
	Exact match “Add a team of professionals to your organization for less than the cost of a part-time file clerk-Tax Service -Bookkeeping -Accounting -Collections (Licensed & Bonded)-Accounts…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Mcgee & Co. LTD	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “Our firm provides outstanding service to our clients because of our dedication to the three underlying principles of professionalism, responsiveness and quality.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Washington, Pittman & Mckeever, LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	2 contacts →
	Exact match “Washington, Pittman & McKeever, LLC (WPM) is a certified public accounting and management consulting firm providing businesses and individuals with audit, accounting, tax and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Mcgarity Consulting Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	2 contacts →
	Exact match “At McGarity LLC, we specialize in providing comprehensive consulting and strategy solutions tailored to meet the unique needs of businesses across diverse industries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Hochfelder & Weber, P.C	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	11-50	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Rubin Solutions	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Rubin Solutions is a leader in profitability, diversity, and operations excellence for professional service firms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Mastertype Accounting & Business Services, P.C	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “If you're looking for a firm large enough to offer a full array of tax, accounting, payroll, and business services, but small enough to know you on a personal basis, than look no…” Recorded in the RevenueBase company graph · Sep 20, 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 “professional service companies”. 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 20 of 47 professional service companies based in Chicago, United States

See the full list, filter by size, metro and specialty, and access 1,306 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional service companies based in Chicago, United States at a glance

As of Sep 20, 2026

47.0%Verified-email coverage

59.1Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 47 companies.

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 Chicago, United States whose business descriptions match “professional service companies” 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 1,306 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 20, 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.

Professional service companies by metro in the United States

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 “professional service companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional service companies are there based in Chicago, United States?

RevenueBase identified 47 company matches for professional service companies associated with Chicago, 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?

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

Which city in the United States has the most professional service companies?

New York leads the United States with 89 company records, followed by Atlanta (53) and Houston (49). Chicago has 47.

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 1,306 professional contacts with verified work emails tracked across these 47 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 20, 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 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.