Company lists · Data refreshed September 2026

Top 25 Internal communications consultancies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,084 companies tracked

RevenueBase identified 3,084 company matches for internal communications consultancies associated with the United States as of September 2026 and tracks 32,985 professional contacts across them, including 12,762 with verified work emails. New York is the largest hub.

This list covers company matches for internal communications 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 September 28, 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 28, 2026 How this list was built

3,084Companies

32,985Contacts tracked

12,762Verified emails

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The 25 largest internal communications consultancies based in the United States

Ranked by team size

Top 25 of 3,084 company matches for internal communications consultancies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Edelman	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	5,001-10,000	6,242 contacts →
	Exact match “Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Ketchum	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	963 contacts →
	Exact match “We are Ketchum, a global communications consultancy fueled by empathy and intelligence – progress at work for innovation, our employees and our clients since 1923.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	887 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Porter Novelli	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	821 contacts →
	Exact match “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Ruder Finn	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	815 contacts →
	Exact match “Ruder Finn is one of the world’s largest global independent integrated marketing and communications agencies, leading at the intersection of technology, human creativity, and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	ICR	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	201-500	693 contacts →
	Exact match “ICR is a strategic communications and advisory firm that helps management teams align how they communicate with how markets think.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Allison Worldwide	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	501-1,000	587 contacts →
	Exact match “We’re a global integrated marketing and communications consultancy dedicated to driving growth, innovation and positive change for clients, colleagues and communities.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Prosek Partners	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	201-500	543 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Sodali & CO	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	431 contacts →
	Exact match “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Sunshine Sachs Morgan & Lylis	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	201-500	364 contacts →
	Exact match “Sunshine Sachs Morgan & Lylis is an independent, full-service firm specializing in communications and narrative strategy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Jeffreygroup	Exact match	Miami, FL, United StatesHQ recorded Sep 28, 2026	201-500	329 contacts →
	Exact match “Founded in 1993, JeffreyGroup is the leading marketing, corporate communications and public affairs consultancy focused exclusively on Latin America.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Nail Communications	Exact match	Providence, RI, United StatesHQ recorded Sep 28, 2026	n/a	315 contacts →
	Exact match “Nail Where every brand finds its fascinating.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	G&s Business Communications, A G&s Agency	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	227 contacts →
	Exact match “G&S Business Communications is an independent B2B and B2B2C communications agency with over 55 years of experience helping organizations navigate complexity and build momentum.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Stratcomm, INC	Exact match	Framingham, MA, United StatesHQ recorded Sep 28, 2026	51-200	225 contacts →
	Exact match “People always ask, what does strategic communications mean?” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Devries Global	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	206 contacts →
	Exact match “DeVries Global is a boutique agency with a global view that lives at the intersection of life and style.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Cohn & Wolfe	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	200 contacts →
	Exact match “Cohn & Wolfe, a global communications agency, builds brands and corporate reputations through an uncompromising commitment to creativity.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Mixing Board, Powered By Axios	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	n/a	197 contacts →
	Exact match “Mixing Board is a community of top professionals who share insights, support each other, and seek to elevate the industry at large.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Coyne PR	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 28, 2026	51-200	195 contacts →
	Exact match “Every day is Independence Day at Coyne PR.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Marcus Thomas LLC	Exact match	Cleveland, OH, United StatesHQ recorded Sep 28, 2026	51-200	184 contacts →
	Exact match “We hang out at the intersection of brand and digital Marcus Thomas is a fully integrated marketing communications agency focused on audience insight, idea generation and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Padilla	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 28, 2026	201-500	168 contacts →
	Exact match “Padilla is a full-service agency that transforms brands and organizations through strategically creative communications.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Orchestra	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	166 contacts →
	Exact match “Orchestra is a strategic communications and marketing company purpose-built for a world defined by speed, fragmentation and unprecedented transparency.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Finsbury Glover Hering	Exact match	New York, United StatesHQ recorded Sep 28, 2026	501-1,000	166 contacts →
	Exact match “We are now FGS Global.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	TSD Communications, INC	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	51-200	166 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Summit Marketing	Exact match	Lenexa, KS, United StatesHQ recorded Sep 28, 2026	51-200	158 contacts →
	Exact match “Summit Marketing is an integrated marketing communications firm with a track record of success in fundraising for nonprofit organizations and in sales and channel development for…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	SIA Addison	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	155 contacts →
	Exact match “Sia/Addison creates strategy, design and communications for the world’s most respected corporate and B2B organizations, following our distinctive strategy made visible(TM)…” Recorded in the RevenueBase company graph · Sep 28, 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 “internal communications 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 3,084 internal communications consultancies based in the United States

See the full list, filter by size, metro and specialty, and access 12,762 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal communications consultancies based in the United States at a glance

As of Sep 28, 2026

38.7%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

10.5%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,504

11-50

470

51-200

201-500

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 3,084 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 “internal communications 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 12,762 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 28, 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.

Internal communications 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 “internal communications consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internal communications consultancies are there based in the United States?

RevenueBase identified 3,084 company matches for internal communications consultancies associated with the 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?

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

Which city has the most internal communications consultancies?

New York leads with 323 company records, followed by Washington (148) and Chicago (107).

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 12,762 professional contacts with verified work emails tracked across these 3,084 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 28, 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.