Company lists · Data refreshed September 2026

Top 25 Corporate communications firms based in Philadelphia, United States

Name: Corporate communications firms based in Philadelphia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 58 companies tracked

RevenueBase identified 58 corporate communications firms headquartered in Philadelphia, United States as of September 2026 and tracks 461 professional contacts across them, including 210 with verified work emails. New York is the largest hub.

This list covers corporate communications firms headquartered in Philadelphia, 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 19, 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 19, 2026 86% judged on-target in blind review

58Companies

461Contacts tracked

210Verified emails

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The 25 largest corporate communications firms based in Philadelphia, United States

Ranked by team size

Top 25 of 58 corporate communications firms based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to corporate communications 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	Brian Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Partial evidence “Brian is a full-service, strategic communications agency.” Source: RevenueBase Database · checked Sep 19, 2026
2	Ceisler Media & Issue Advocacy	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Partial evidence “Ceisler Media is: A full-service public relations and issue advocacy firm with offices across Pennsylvania, guiding our clients through every step of their communications…” Source: RevenueBase Database · checked Sep 19, 2026
3	Slice Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “When organizations and their leaders confront high-stakes, complex communications challenges, Slice Communications responds with urgency, sensitivity, and strategic focus.” Source: RevenueBase Database · checked Sep 19, 2026
4	Harris, Baio & Mccullough	Indirect evidence	Philadelphia, United StatesHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “At Harris, Baio & McCullough (HB & M), we help organizations turn complex business challenges into opportunities for growth through strategic marketing, creative storytelling…” Source: RevenueBase Database · checked Sep 19, 2026
5	Cashman & Associates	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Founded in 2001 by Nicole A.” Source: RevenueBase Database · checked Sep 19, 2026
6	Skai Blue Media	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Skai Blue Media is a full-service multimedia communications and marketing agency based in New York and Philadelphia.” Source: RevenueBase Database · checked Sep 19, 2026
7	Maven Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Maven Communications is a results-driven public relations, social media and issues management agency based in Philadelphia.” Source: RevenueBase Database · checked Sep 19, 2026
8	Jacobson Strategic Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Jacobson Strategic Communications is a full-service communications firm that combines three essential components – trust, talent and results – to meet every unique client need.” Source: RevenueBase Database · checked Sep 19, 2026
9	Deardorff	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Deardorff Associates is an award-winning full-service integrated brand communications agency with expertise across numerous industries.” Source: RevenueBase Database · checked Sep 19, 2026
10	Bellevue Communications Group	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Bellevue Communications Group (Bellevue) is a full-service public relations firm specializing in public relations, media relations, crisis communications and issue management.” Source: RevenueBase Database · checked Sep 19, 2026
11	Grimm & Grove Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “We’re a strategic communications firm with deep expertise in the start-up, real estate, tourism, arts & culture and non-profit sectors.” Source: RevenueBase Database · checked Sep 19, 2026
12	Broadpath Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Broadpath is a strategic communications firm providing a full complement of public relations and content marketing services to technology companies and high-innovation brands.” Source: RevenueBase Database · checked Sep 19, 2026
13	Cleary Strategies	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Award-winning, full service public relations agency founded by Ronica Cleary.” Source: RevenueBase Database · checked Sep 19, 2026
14	Aajdesign	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “We create work that makes a difference for individuals, organizations, and society.” Source: RevenueBase Database · checked Sep 19, 2026
15	Peter Breslow Consulting & Public Relations	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Tenacious, resolute and determined, Peter Breslow Consulting & PR has been called “A PR Machine” by its clients as well as many members of the press.” Source: RevenueBase Database · checked Sep 19, 2026
16	Jenna Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Jenna Communications was founded in 2007 keeping one overlying goal in mind: a passion for finding the most effective ways to get your brand noticed.” Source: RevenueBase Database · checked Sep 19, 2026
17	Food Shelter Public Relations	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “No.” Source: RevenueBase Database · checked Sep 19, 2026
18	Onword Communications	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Storytelling isn’t a one size fits all approach.” Source: RevenueBase Database · checked Sep 19, 2026
19	Shinepr	Indirect evidence	Philadelphia, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “ShinePR delivers public relations strategy and execution to purpose-driven B2B organizations, both nonprofit and for profit, in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
20	PIZZI	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Marketing Consulting, Communications Strategy and Media Training” Source: RevenueBase Database · checked Sep 19, 2026
21	Fitler Square Strategies	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Fitler Square Strategies is a strategic communications, crisis communications, and public affairs firm based in Philadelphia.” Source: RevenueBase Database · checked Sep 19, 2026
22	Wendy Ramunno Consulting Ghostwriting & Strategic Communications	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Communications firm specializing in ghostwriting, thought leadership, speechwriting, and executive communications strategy.” Source: RevenueBase Database · checked Sep 19, 2026
23	Quickstudy	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “What we do: Public relations and strategic communications for the tech and healthcare industries.” Source: RevenueBase Database · checked Sep 19, 2026
24	Relief Communications, LLC	Partial evidence	Philadelphia, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “Relief Communications, LLC was founded in 2001 to provide comprehensive communications services to the non-profit sector.” Source: RevenueBase Database · checked Sep 19, 2026
25	Madison Worldwide	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Public Relations, Marketing and Advertising.” Source: RevenueBase Database · checked Sep 19, 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: corporate communications 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 corporate communications firms.
Partial evidence: Its own public description names part of corporate communications firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate communications 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 58 corporate communications firms based in Philadelphia, United States

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Corporate communications firms based in Philadelphia, United States at a glance

As of Sep 19, 2026

45.6%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

875.9%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 58 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 corporate communications 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 Philadelphia, United States whose own description of what they do matches “corporate communications 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 corporate communications 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 corporate communications firms, and records with no verified work email. Companies headquartered outside Philadelphia 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, 210 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 19, 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.

Corporate communications firms by metro in the United States

Corporate communications firms in New York508
Corporate communications firms in Washington203
Corporate communications firms in Los Angeles194
Corporate communications firms in Chicago159
Corporate communications firms in Atlanta111
Corporate communications firms in San Francisco109
Corporate communications firms in Boston93
Corporate communications firms in Miami89
Corporate communications firms in Dallas87
Corporate communications firms in Austin86
Corporate communications firms in Denver72
Corporate communications firms in Houston67
Corporate communications firms in Minneapolis59
Corporate communications firms in Philadelphia58
Corporate communications firms in Seattle55
Corporate communications firms in San Diego48
Corporate communications firms in Portland45
Corporate communications firms in Las Vegas43
Corporate communications firms in Columbus37
Corporate communications firms in Charlotte36
Corporate communications firms in Phoenix36
Corporate communications firms in Nashville35
Corporate communications firms in New York City35
Corporate communications firms in Alexandria34
Corporate communications firms in Baltimore30
Corporate communications firms in Raleigh30
Corporate communications firms in Orlando29
Corporate communications firms in Pittsburgh26
Corporate communications firms in Sacramento26
Corporate communications firms in Tampa26
Corporate communications firms in Birmingham25
Corporate communications firms in Milwaukee25

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 corporate communications 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 corporate communications firms are there based in Philadelphia, United States?

RevenueBase identified 58 corporate communications firms headquartered in Philadelphia, 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?

Brian Communications, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most corporate communications firms?

New York leads with 508 headquartered companies, followed by Washington (203) and Los Angeles (194).

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 210 verified decision-maker contacts tracked across these 58 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 19, 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.