Company lists · Data refreshed September 2026

Top 25 IT B2B pr agencies based in the United States

RevenueBase identified 3,857 IT B2B pr agencies headquartered in the United States as of September 2026 and tracks 40,532 professional contacts across them, including 16,671 with verified work emails. New York is the largest hub.

This list covers IT B2B pr agencies 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 21, 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 21, 2026 86% judged on-target in blind review
3,857Companies
40,532Contacts tracked
16,671Verified emails
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The 25 largest IT B2B pr agencies based in the United States

Ranked by team size
Top 25 of 3,857 IT B2B pr agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to IT B2B pr agencies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,0004,191 contacts →

Indirect evidence

“Weber Shandwick is the earned-first global communications agency.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000887 contacts →

Partial evidence

“Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000815 contacts →

Indirect 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 21, 2026
4Partial evidenceIrving, TX, United StatesHQ checked Sep 21, 2026501-1,000616 contacts →

Partial evidence

“Multiview is a B2B digital marketing agency helping associations and businesses reach, engage and grow their most valued relationships.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500543 contacts →

Indirect evidence

“Prosek Partners builds – and protects – the top brands in business.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000449 contacts →

Indirect evidence

“BCW is the global communications agency built to move people.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceSan Jose, CA, United StatesHQ checked Sep 21, 2026201-500441 contacts →

Partial evidence

“Defining communications broadly to include digital, content marketing, thought leadership as well as traditional PR, The Hoffman Agency knows how to differentiate brands and…”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500397 contacts →

Partial evidence

“5WPR is one of the largest independently owned PR and digital marketing agencies in the US.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 202651-200381 contacts →

Partial evidence

“MWW is one of the world’s leading independent, integrated PR agencies with offices across the US and UK, and a global network of partners.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500349 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 21, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500302 contacts →

Indirect 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 21, 2026
12Indirect evidenceSyracuse, NY, United StatesHQ checked Sep 21, 202651-200297 contacts →

Indirect evidence

“Mower is an independent, women-led and employee-owned marketing, advertising and public relations agency with over 50 years of experience helping brands connect with their…”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceWorthington, OH, United StatesHQ checked Sep 21, 2026n/a290 contacts →

Partial evidence

“An integrated B2B agency of strategists and execution specialists, Marketing Works is outcomes driven, strategy focused and values-based.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceWoodland Hills, CA, United StatesHQ checked Sep 21, 202651-200278 contacts →

Partial evidence

“1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 21, 2026201-500257 contacts →

Partial evidence

“Hotwire Global is the preeminent tech PR, communications, and marketing consultancy.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 202651-200227 contacts →

Partial evidence

“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.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceIrvine, CA, United StatesHQ checked Sep 21, 202651-200207 contacts →

Partial evidence

“Directive elevates the focus of B2B marketers from MQLs to qualified pipeline with a proven methodology that fuels the fastest growing B2B brands in the world.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceChicago, IL, United StatesHQ checked Sep 21, 2026201-500199 contacts →

Partial evidence

“Walker Sands is an integrated B2B growth services agency with expertise in strategy, data, content, creative, strategic communications, digital marketing and RevOps.”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000197 contacts →

Partial evidence

“As the world’s first full-service global creative B2B powerhouse, our mission is to create ideas that are humanly relevant.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceParsippany, NJ, United StatesHQ checked Sep 21, 202651-200195 contacts →

Partial evidence

“Every day is Independence Day at Coyne PR.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-200194 contacts →

Indirect evidence

“In 2019, MCC became a wholly owned subsidiary of Mod Op, a digital marketing agency with offices across the U.S.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceBoston, MA, United StatesHQ checked Sep 21, 2026201-500178 contacts →

Indirect evidence

“Your vision deserves results.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 21, 202651-200162 contacts →

Indirect evidence

“At Jackson Spalding, we love a good story.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceWashington, DC, United StatesHQ checked Sep 21, 202651-200161 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 21, 202651-200154 contacts →

Indirect 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 21, 2026

Showing 25 of 3,857 IT B2B pr agencies based in the United States

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IT B2B pr agencies based in the United States at a glance

As of Sep 21, 2026
41.1%Verified-email coverage
10.5Average contacts per company
1-10Median size (employees)
9.2%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
2,802
11-50
904
51-200
119
201-500
20
501-1,000
6
1,001-5,000
4
5,001-10,000
1

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 3,857 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 IT B2B pr agencies, 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 “IT B2B pr agencies”. 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 IT B2B pr agencies), 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 IT B2B pr agencies, 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, 16,671 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 21, 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.

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 IT B2B pr agencies, 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 IT B2B pr agencies are there based in the United States?

RevenueBase identified 3,857 IT B2B pr agencies 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?

Weber Shandwick, headquartered in New York, tops this list with the largest team on record.

Which city has the most IT B2B pr agencies?

New York leads with 353 headquartered companies, followed by Los Angeles (175) and San Francisco (112).

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 16,671 verified decision-maker contacts tracked across these 3,857 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 21, 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.