Company lists · Data refreshed September 2026

Top 25 Internal communications agencies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 2,570 companies tracked

RevenueBase identified 2,570 company matches for internal communications agencies associated with the United States as of September 2026 and tracks 64,819 professional contacts across them, including 15,349 with verified work emails. New York is the largest hub.

This list covers company matches for internal communications agencies 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 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

2,570Companies

64,819Contacts tracked

15,349Verified emails

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The 25 largest internal communications agencies based in the United States

Ranked by team size

Top 25 of 2,570 company matches for internal communications agencies based in the 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	LEO Burnett	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,385 contacts →
	Exact match “Leo Burnett is a communications agency powered by its HumanKind operating system, with the belief that creativity, data and technology work together to transform human behavior…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	4,963 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	3,874 contacts →
	Exact match “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Thompson	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	3,574 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Young & Rubicam	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	1,602 contacts →
	Exact match “Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Sep 20, 2026	n/a	1,255 contacts →
	Exact match “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Finn Partners	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	903 contacts →
	Exact match “1300+ People.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
9	Nike Communications, INC	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	n/a	872 contacts →
	Exact match “We are a full-service communications agency behind some of the world’s most revered and iconic brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Ruder Finn	Exact match	New York, NY, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
11	Prosek Partners	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	201-500	543 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Everywhere Agency	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	n/a	527 contacts →
	Exact match “Everywhere Agency is now a part of MWWPR.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Droga5	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	501-1,000	505 contacts →
	Exact match “Droga5, part of Accenture Song, is a creative agency with offices in New York, London, Dublin, Tokyo and São Paulo.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	R&r Partners	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 20, 2026	201-500	493 contacts →
	Exact match “R&R partners isn’t our name, it’s our promise.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	BCW Global	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	449 contacts →
	Exact match “BCW is the global communications agency built to move people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	22squared	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	201-500	447 contacts →
	Exact match “For over 100 years, 22squared has helped complex businesses solve their toughest challenges through insight-driven media and creative.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Workshop	Exact match	Omaha, NE, United StatesHQ recorded Sep 20, 2026	51-200	447 contacts →
	Exact match “Workshop is a modern, purpose-built internal communications platform that helps teams create, send, manage, and measure employee communications in one place, starting with email…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	The Hoffman Agency	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 2026	201-500	441 contacts →
	Exact match “Defining communications broadly to include digital, content marketing, thought leadership as well as traditional PR, The Hoffman Agency knows how to differentiate brands and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Sunshine Sachs Morgan & Lylis	Exact match	New York, NY, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
20	KWT Global	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	364 contacts →
	Exact match “KWT Global and HUNTER have joined forces to create a new marketing and communications powerhouse under the HUNTER banner.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Campbell Ewald	Exact match	Detroit, MI, United StatesHQ recorded Sep 20, 2026	501-1,000	356 contacts →
	Exact match “Campbell Ewald is a full service, fully integrated marketing communications agency with offices in Detroit, Los Angeles and New York.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	TMA The Marketing ARM	Exact match	Dallas, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	350 contacts →
	Exact match “TMA pushes past relevance to create true cultural resonance for brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Nail Communications	Exact match	Providence, RI, United StatesHQ recorded Sep 20, 2026	n/a	315 contacts →
	Exact match “Nail Where every brand finds its fascinating.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Doe-Anderson	Exact match	Louisville, KY, United StatesHQ recorded Sep 20, 2026	51-200	289 contacts →
	Exact match “Doe-Anderson is the oldest independent advertising agency in the U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Reingold, INC	Exact match	Alexandria, VA, United StatesHQ recorded Sep 20, 2026	201-500	282 contacts →
	Exact match “Reingold is a full-service strategic communications and marketing firm, helping clients tell stories that get results.” 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 “internal communications agencies”. 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 2,570 internal communications agencies based in the United States

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Internal communications agencies based in the United States at a glance

As of Sep 20, 2026

23.7%Verified-email coverage

25.2Average contacts per company

1-10Median size (employees)

11.3%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,655

11-50

694

51-200

158

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 2,570 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 agencies” 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 15,349 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.

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

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

RevenueBase identified 2,570 company matches for internal communications agencies 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?

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

Which city has the most internal communications agencies?

New York leads with 291 company records, followed by Chicago (89) and Los Angeles (72).

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 15,349 professional contacts with verified work emails tracked across these 2,570 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.