Company lists · Data refreshed September 2026

Top 25 Stakeholder communication firms based in the United States

Name: Stakeholder communication firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 1,845 companies tracked

RevenueBase identified 1,845 stakeholder communication firms headquartered in the United States as of September 2026 and tracks 20,071 professional contacts across them, including 8,157 with verified work emails. New York is the largest hub.

This list covers stakeholder communication firms headquartered in the 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 22, 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 22, 2026 86% judged on-target in blind review

1,845Companies

20,071Contacts tracked

8,157Verified emails

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The 25 largest stakeholder communication firms based in the United States

Ranked by team size

Top 25 of 1,845 stakeholder communication firms based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to stakeholder communication 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	Zeno Group	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	501-1,000	887 contacts →
	Partial evidence “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Source: RevenueBase Database · checked Sep 22, 2026
2	Ruder Finn	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	815 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
3	ICR	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	693 contacts →
	Partial evidence “ICR is a strategic communications and advisory firm that helps management teams align how they communicate with how markets think.” Source: RevenueBase Database · checked Sep 22, 2026
4	Prosek Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	543 contacts →
	Indirect evidence “Prosek Partners builds – and protects – the top brands in business.” Source: RevenueBase Database · checked Sep 22, 2026
5	Sodali & CO	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	501-1,000	431 contacts →
	Partial evidence “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Source: RevenueBase Database · checked Sep 22, 2026
6	DKC	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	349 contacts →
	Indirect evidence “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Source: RevenueBase Database · checked Sep 22, 2026
7	Berlinrosen, An Orchestra Company	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	302 contacts →
	Partial evidence “Built to operate with the speed and intensity of a political campaign, BerlinRosen takes a 360-degree approach to communications, activating audiences and elevating story above…” Source: RevenueBase Database · checked Sep 22, 2026
8	Coyne PR	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 22, 2026	51-200	195 contacts →
	Indirect evidence “Every day is Independence Day at Coyne PR.” Source: RevenueBase Database · checked Sep 22, 2026
9	Finsbury Glover Hering	Indirect evidence	New York, United StatesHQ checked Sep 22, 2026	501-1,000	166 contacts →
	Indirect evidence “We are now FGS Global.” Source: RevenueBase Database · checked Sep 22, 2026
10	ID	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	154 contacts →
	Partial evidence “Established in 1993, ID is the largest independently owned full-service communications agency in the U.S, with offices in Los Angeles and New York.” Source: RevenueBase Database · checked Sep 22, 2026
11	The Results Company	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 22, 2026	n/a	134 contacts →
	Partial evidence “The Results Company creates winning communications and outreach strategies for businesses and organizations at the local, state and federal levels.” Source: RevenueBase Database · checked Sep 22, 2026
12	Infinite	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	122 contacts →
	Partial evidence “Infinite Global is an award-winning strategic communications firm specializing in PR, Content & Campaigns, Digital, and Crisis & Litigation.” Source: RevenueBase Database · checked Sep 22, 2026
13	The Martin Group	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 22, 2026	51-200	118 contacts →
	Partial evidence “The Martin Group is a leading integrated communications firm headquartered in downtown Buffalo with offices in New York City, Rochester and Albany, NY.” Source: RevenueBase Database · checked Sep 22, 2026
14	Campbell Marketing & Communications	Partial evidence	Dearborn, MI, United StatesHQ checked Sep 22, 2026	51-200	113 contacts →
	Partial evidence “Campbell Marketing and Communications, founded in 1982 as Campbell & Co, is located in Dearborn, Mich.” Source: RevenueBase Database · checked Sep 22, 2026
15	Narrative Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	111 contacts →
	Partial evidence “Narrative is a full-service strategic communications firm creatively solving today’s most demanding reputational and public affairs challenges.” Source: RevenueBase Database · checked Sep 22, 2026
16	Gregory FCA	Indirect evidence	Ardmore, PA, United StatesHQ checked Sep 22, 2026	51-200	109 contacts →
	Indirect evidence “At Gregory FCA, we’re a 30-year success story, forged by exceeding client expectations during every engagement.” Source: RevenueBase Database · checked Sep 22, 2026
17	Kcsa Strategic Communications	Partial evidence	New York, United StatesHQ checked Sep 22, 2026	11-50	102 contacts →
	Partial evidence “KCSA is a fully integrated communications agency specializing in public relations, shareholder communications and social media, with expertise in cannabis, financial and…” Source: RevenueBase Database · checked Sep 22, 2026
18	Kearns & West	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	51-200	101 contacts →
	Partial evidence “Kearns & West is a collaboration and strategic communications firm founded in 1984.” Source: RevenueBase Database · checked Sep 22, 2026
19	RBB Communications	Partial evidence	Miami, FL, United StatesHQ checked Sep 22, 2026	51-200	100 contacts →
	Partial evidence “rbb is a leading integrated communications agency that champions breakout brands.” Source: RevenueBase Database · checked Sep 22, 2026
20	VOX Global	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	99 contacts →
	Indirect evidence “It starts with a goal: yours.” Source: RevenueBase Database · checked Sep 22, 2026
21	Lambert	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 22, 2026	51-200	99 contacts →
	Partial evidence “Founded in 1998, Lambert is a strategic communications and advisory firm specializing in public relations, investor relations and integrated marketing.” Source: RevenueBase Database · checked Sep 22, 2026
22	Bite Communications	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	51-200	96 contacts →
	Indirect evidence “We help category-defining brands make their mark through hard-working, creative campaigns that change perceptions and spark action.” Source: RevenueBase Database · checked Sep 22, 2026
23	ROI Communication	Partial evidence	Scotts Valley, CA, United StatesHQ checked Sep 22, 2026	51-200	89 contacts →
	Partial evidence “ROI Communication is a 100% employee-owned internal communications company focused on helping the world’s leading businesses achieve their very best through inspired employee…” Source: RevenueBase Database · checked Sep 22, 2026
24	H Advisors Abernathy	Strong evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	86 contacts →
	Strong evidence “H/Advisors Abernathy is a trusted strategic communications advisor that partners with companies, investment firms and other organizations to engage core stakeholders as they…” Source: RevenueBase Database · checked Sep 22, 2026
25	LSG	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	51-200	85 contacts →
	Indirect evidence “We work with corporations, trade associations, and nonprofits to change hearts and minds, move public opinion, and help brands connect to the public conscience in a rapidly…” Source: RevenueBase Database · checked Sep 22, 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: stakeholder communication 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 stakeholder communication firms.
Partial evidence: Its own public description names part of stakeholder communication firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name stakeholder communication 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 1,845 stakeholder communication firms based in the United States

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Stakeholder communication firms based in the United States at a glance

As of Sep 22, 2026

40.6%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

10.5%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

1,376

11-50

404

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,845 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 stakeholder communication 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 the United States whose own description of what they do matches “stakeholder communication 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 stakeholder communication 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 stakeholder communication firms, and records with no verified work email. Companies headquartered outside United States 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, 8,157 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 22, 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.

Stakeholder communication firms by metro

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 stakeholder communication 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 stakeholder communication firms are there based in the United States?

RevenueBase identified 1,845 stakeholder communication firms headquartered in the 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?

Zeno Group, headquartered in New York, tops this list with the largest team on record.

Which city has the most stakeholder communication firms?

New York leads with 194 headquartered companies, followed by Washington (90) and Los Angeles (73).

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 8,157 verified decision-maker contacts tracked across these 1,845 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 22, 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.