Company lists · Data refreshed August 2026

Top 25 Communications consulting firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 5,945 companies tracked

RevenueBase identified 5,945 company matches for communications consulting firms associated with the United States as of August 2026 and tracks 56,011 professional contacts across them, including 16,822 with verified work emails and 18,919 with mobile numbers. New York is the largest hub.

This list covers company matches for communications consulting firms 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 August 31, 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 Aug 31, 2026 How this list was built

5,945Companies

56,011Contacts tracked

16,822Verified emails

18,919Mobile numbers

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The 25 largest communications consulting firms based in the United States

Ranked by team size

Top 25 of 5,945 company matches for communications consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Aug 31, 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	Hill & Knowlton	Exact match	Austin, TX, United States	1,001-5,000	1,463 contacts →
	Exact match “Hill & Knowlton is a strategic and creative partner to drive breakthrough opportunities for growth and value creation, advance corporate strategy, and build reputation capital and…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
2	Zeno Group	Exact match	New York, NY, United States	501-1,000	901 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
3	Porter Novelli	Exact match	New York, NY, United States	501-1,000	831 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 · Aug 31, 2026 · View company records in RevenueBase
4	ICR	Exact match	San Francisco, CA, United States	201-500	684 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 · Aug 31, 2026 · View company records in RevenueBase
5	Prosek Partners	Exact match	Boston, MA, United States	201-500	541 contacts →
	Exact match “Prosek Partners builds – and protects – the top brands in business.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
6	Sunshine Sachs Morgan & Lylis	Exact match	Los Angeles, CA, United States	201-500	361 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 · Aug 31, 2026 · View company records in RevenueBase
7	DKC	Exact match	New York, NY, United States	201-500	346 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
8	Berlinrosen, An Orchestra Company	Exact match	New York, NY, United States	201-500	307 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
9	Cartesian	Exact match	Somerset, NJ, United States	201-500	298 contacts →
	Exact match “Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
10	Joele Frank	Exact match	San Francisco, CA, United States	201-500	250 contacts →
	Exact match “Joele Frank is a strategic communications firm that enables clients to take control in key moments of challenge and opportunity, from bet-the-company situations to the ongoing…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
11	Edelman Smithfield	Exact match	United States	201-500	241 contacts →
	Exact match “Edelman Smithfield is a financial communications boutique that specializes in the financial markets and special situations, serving clients in the United States, Canada, EMEA…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
12	Jackson Spalding	Exact match	Los Angeles, CA, United States	51-200	168 contacts →
	Exact match “At Jackson Spalding, we love a good story.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
13	Orchestra	Exact match	New York, NY, United States	501-1,000	167 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 · Aug 31, 2026 · View company records in RevenueBase
14	Rational 360	Exact match	Washington, DC, United States	51-200	157 contacts →
	Exact match “The Rational Way: All in Partners Rational 360 is a leading full-service strategic communications and digital agency, with offices and staff located across the country.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
15	SIA Addison	Exact match	New York, NY, United States	51-200	154 contacts →
	Exact match “Sia/Addison is a creative agency with over 100 award-winning thinkers, designers, content creators, digital storytellers, and developers - all under one roof.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
16	Clarity	Exact match	Los Angeles, CA, United States	51-200	125 contacts →
	Exact match “Behind every ambitious B2B technology brand is a leadership team facing complex, high-stakes growth tensions and internal fragmentation.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
17	ACTUM	Exact match	Los Angeles, CA, United States	51-200	123 contacts →
	Exact match “Actum is a global consulting firm built to solve complex problems at the intersection of business, politics and media.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
18	Quest Corporation Of America, Inc. Quest	Exact match	Land O Lakes, FL, United States	51-200	122 contacts →
	Exact match “Serving clients since 1995, Quest Corporation of America, Inc.(Quest) provides Communications, Community Involvement, Compliance Administration, Creative Graphics, and Web Design…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
19	RF Binder	Exact match	Los Angeles, CA, United States	51-200	122 contacts →
	Exact match “RF\|Binder is a fully integrated communications agency and consultancy that aligns communications and business strategy to achieve results.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
20	Campbell Marketing & Communications	Exact match	Dearborn, MI, United States	51-200	113 contacts →
	Exact match “Campbell Marketing and Communications, founded in 1982 as Campbell & Co, is located in Dearborn, Mich.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
21	Vested	Exact match	New York, NY, United States	51-200	111 contacts →
	Exact match “Vested is a world-leading integrated marketing and communications consultancy focused exclusively on the financial services industry.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
22	VOX Global	Exact match	Indianapolis, IN, United States	51-200	100 contacts →
	Exact match “It starts with a goal: yours.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
23	Lambert	Exact match	Grand Rapids, MI, United States	51-200	98 contacts →
	Exact match “Founded in 1998, Lambert is a strategic communications and advisory firm specializing in public relations, investor relations and integrated marketing.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
24	H Advisors Abernathy	Exact match	New York, NY, United States	51-200	87 contacts →
	Exact match “H/Advisors Abernathy is a trusted strategic communications advisor that partners with companies, investment firms and other organizations to engage core stakeholders as they…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
25	Blue Streak	Exact match	Miami, FL, United States	501-1,000	85 contacts →
	Exact match “Blue Streak is a leading communications construction, consulting and engineering company.” Recorded in the RevenueBase company graph · Aug 31, 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 “communications consulting firms”. 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 5,945 communications consulting firms based in the United States

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Communications consulting firms based in the United States at a glance

As of Aug 31, 2026

30.0%Verified-email coverage

33.8%Mobile-number coverage

9.4Average contacts per company

1-10Median size (employees)

8.1%Largest-city concentration · New York

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

4,808

11-50

963

51-200

130

201-500

501-1,000

1,001-5,000

5,001-10,000

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 “communications consulting firms” 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 16,822 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 August 31, 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.

Communications consulting firms 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 “communications consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many communications consulting firms are there based in the United States?

RevenueBase identified 5,945 company matches for communications consulting firms associated with the United States as of August 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?

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

Which city has the most communications consulting firms?

New York leads with 483 company records, followed by Washington (348) and Los Angeles (206).

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 16,822 professional contacts with verified work emails tracked across these 5,945 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 August 31, 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.