Company lists · Data refreshed November 2026

Top 25 Professional services consultancies based in the United States

Name: Professional services consultancies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 12,481 companies tracked

RevenueBase identified 12,481 company matches for professional services consultancies associated with the United States as of November 2026 and tracks 788,319 professional contacts across them, including 317,786 with verified work emails. New York is the largest hub.

This list covers company matches for professional services consultancies 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 November 6, 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 Nov 6, 2026 How this list was built

12,481Companies

788,319Contacts tracked

317,786Verified emails

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The 25 largest professional services consultancies based in the United States

Ranked by team size

Top 25 of 12,481 company matches for professional services consultancies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	10001+	68,572 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Kpmg US	Exact match	New York, GA, United StatesHQ recorded Nov 6, 2026	10001+	47,430 contacts →
	Exact match “KPMG is one of the world’s leading professional services firms and the fastest growing Big Four accounting firm in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	EXL	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	46,962 contacts →
	Exact match “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Boston Consulting Group BCG	Exact match	Boston, MA, United StatesHQ recorded Nov 6, 2026	10001+	35,975 contacts →
	Exact match “Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Bain & Company	Exact match	Boston, MA, United StatesHQ recorded Nov 6, 2026	10001+	23,264 contacts →
	Exact match “Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Alvarez & Marsal	Exact match	New York, IL, United StatesHQ recorded Nov 6, 2026	10001+	14,637 contacts →
	Exact match “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Guidehouse	Exact match	Mclean, IL, United StatesHQ recorded Nov 6, 2026	10001+	13,603 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 · Nov 6, 2026 · View company records in RevenueBase
8	BDO USA	Exact match	Chicago, AL, United StatesHQ recorded Nov 6, 2026	10001+	11,006 contacts →
	Exact match “At BDO, we believe how we show up matters.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Baker Tilly US	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	10001+	10,838 contacts →
	Exact match “Every business is different-and the strongest decisions come from collaborating with a firm that understands how yours truly works.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	10,188 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	CLA Cliftonlarsonallen	Exact match	Othello, WA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	9,936 contacts →
	Exact match “CLA exists to create opportunities for our clients, our people, and our communities through industry-focused wealth advisory, outsourcing, audit, tax, and consulting services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	FTI Consulting	Exact match	Washington, GA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	9,494 contacts →
	Exact match “FTI Consulting is the leading global expert firm for organizations facing crisis and transformation, with more than 8,100 employees in 32 countries and territories.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Oliver Wyman	Exact match	New York, NC, United StatesHQ recorded Nov 6, 2026	5,001-10,000	8,814 contacts →
	Exact match “At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	TRC Companies, INC	Exact match	Windsor, CT, United StatesHQ recorded Nov 6, 2026	5,001-10,000	7,280 contacts →
	Exact match “TRC, a member of WSP, stands for adaptability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	CBIZ	Exact match	Independence, MO, United StatesHQ recorded Nov 6, 2026	10001+	6,622 contacts →
	Exact match “CBIZ, Inc.(NYSE: CBZ) is a leading professional services advisor to middle-market businesses nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Plante Moran	Exact match	Southfield, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,927 contacts →
	Exact match “Co-founder Frank Moran often referred to our firm as “a people firm disguised as an accounting firm.” Why?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Eisneramper	Exact match	New York, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,410 contacts →
	Exact match “EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	RGP	Exact match	Dallas, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,958 contacts →
	Exact match “RGP (Nasdaq: RGP) has been redefining professional services for 30 years by closing the gap between advice and execution.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Withum	Exact match	Princeton, NJ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,484 contacts →
	Exact match “Withum is a forward-thinking, technology-driven advisory and accounting firm, helping clients to Be in a Position of Strength in today’s modern business landscape.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	APRIO	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,336 contacts →
	Exact match “Aprio is redefining what it means to be a global advisory and accounting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Cherry Bekaert	Exact match	Raleigh, NC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,265 contacts →
	Exact match “Cherry Bekaert is a top-ranked U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Citrin Cooperman	Exact match	Carlsbad, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,231 contacts →
	Exact match “Citrin Cooperman is one of the nation’s largest and fastest-growing professional services firms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Wipfli	Exact match	Milwaukee, WI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,201 contacts →
	Exact match “Always advancing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Oxford Global Resources	Exact match	Beverly, OH, United StatesHQ recorded Nov 6, 2026	501-1,000	2,734 contacts →
	Exact match “Oxford Global Resources is a global professional services and consulting partner trusted by leading industry organizations to solve complex challenges and deliver outcomes at…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Frost & Sullivan	Exact match	San Antonio, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,542 contacts →
	Exact match “For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.” Recorded in the RevenueBase company graph · Nov 6, 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 services consultancies”. 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 12,481 professional services consultancies based in the United States

See the full list, filter by size, metro and specialty, and access 317,786 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional services consultancies based in the United States at a glance

As of Nov 6, 2026

40.3%Verified-email coverage

63.2Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

8,375

11-50

2,700

51-200

921

201-500

217

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 12,481 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 the United States whose business descriptions match “professional services consultancies” 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 317,786 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 November 6, 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 services consultancies 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 “professional services consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional services consultancies are there based in the United States?

RevenueBase identified 12,481 company matches for professional services consultancies associated with the United States as of November 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?

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

Which city has the most professional services consultancies?

New York leads with 771 company records, followed by Atlanta (353) and Houston (337).

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 317,786 professional contacts with verified work emails tracked across these 12,481 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 November 6, 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.