Company lists · Data refreshed September 2026

Top 25 Internal communications firms based in Boston, United States

RevenueBase identified 79 internal communications firms headquartered in Boston, United States as of September 2026 and tracks 676 professional contacts across them, including 296 with verified work emails. New York is the largest hub.

This list covers internal communications firms headquartered in Boston, 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 20, 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 20, 2026 86% judged on-target in blind review
79Companies
676Contacts tracked
296Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest internal communications firms based in Boston, United States

Ranked by team size
Top 25 of 79 internal communications firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to internal 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202651-200102 contacts →

Partial evidence

“The Dewey Square Group offers strategic marketing, grassroots and digital communications to the country's most respected corporate and non-profit organizations.”

Source: RevenueBase Database · checked Sep 20, 2026
2Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-5061 contacts →

Partial evidence

“V2 Communications is the integrated communications firm for B2B, healthcare and climate & energy technology brands, redefining what it means to be a strategic communications…”

Source: RevenueBase Database · checked Sep 20, 2026
3Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202651-20047 contacts →

Partial evidence

“617MediaGroup is a fast-growing, full service, progressive communications firm headquartered in Massachusetts.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-5047 contacts →

Indirect evidence

“Castle is a certified women-owned business where local expertise meets global impact.”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202651-20044 contacts →

Partial evidence

“Issues Management Group is an integrated strategic communication, public affairs and digital firm guiding clients through complex, highly leveraged situations.”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202651-20032 contacts →

Partial evidence

“We are a nationally recognized communications and public affairs firm named by Forbes as one of America’s top public relations firms.”

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-1016 contacts →

Partial evidence

“Crackle Communications is a public relations agency that works with good companies only.”

Source: RevenueBase Database · checked Sep 20, 2026
8Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-1016 contacts →

Partial evidence

“DPA Communications is a full-service public relations and marketing firm.”

Source: RevenueBase Database · checked Sep 20, 2026
9Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-5016 contacts →

Partial evidence

“Metis Communications is a marketing communications consultancy.”

Source: RevenueBase Database · checked Sep 20, 2026
10Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-5015 contacts →

Partial evidence

“Regina Villa Assoc is a public relations and communications company based out of 20 Park Plaza, Suite 801, Boston, Massachusetts, United States.”

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-5014 contacts →

Partial evidence

“We drive value creation in today’s dynamic capital markets through strategic communications and investor relations.”

Source: RevenueBase Database · checked Sep 20, 2026
12Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-1013 contacts →

Partial evidence

“Kortenhaus Communications (KCI) is an independent, boutique public relations firm skilled in developing and executing targeted marketing communications programs.”

Source: RevenueBase Database · checked Sep 20, 2026
13Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202651-20012 contacts →

Partial evidence

“Since 1992 Fenway Group has been providing marketing communications solutions for leading businesses, organizations and brands in the greater Boston area and beyond.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-1012 contacts →

Indirect evidence

“Libretto helps our clients articulate what they do, believe, and hope to achieve.”

Source: RevenueBase Database · checked Sep 20, 2026
15Strong evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-507 contacts →

Strong evidence

“Melwood Global is a strategic communications firm staffed by media industry professionals who have vast experience in both international public affairs and international…”

Source: RevenueBase Database · checked Sep 20, 2026
16Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-107 contacts →

Partial evidence

“Image Unlimited Communications (IUC) is a boutique Integrated Marketing Communications (IMC) agency specializing in lifestyle and consumer goods in Boston, MA.”

Source: RevenueBase Database · checked Sep 20, 2026
17Indirect evidenceBoston, United StatesHQ checked Sep 20, 20261-106 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
18Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“Motivated by a singular focus on successful client outcomes, The Novus Group leverages its unique blend of subject expertise in leading political and issues campaigns.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“We are not an advertising agency nor the typical management consulting firm.”

Source: RevenueBase Database · checked Sep 20, 2026
20Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-104 contacts →

Partial evidence

“When the stakes are high, Fortune 500 companies, major institutions and leading public figures come to Howell Communications.”

Source: RevenueBase Database · checked Sep 20, 2026
21Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-103 contacts →

Partial evidence

“McKenna and Partners is a strategic communications firm created to handle opportunities that agencies-of-record may not have the manpower, speed or vertical expertise to address.”

Source: RevenueBase Database · checked Sep 20, 2026
22Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-103 contacts →

Partial evidence

“You’re a highly-skilled Corporate Communications Executive who’s fighting the epidemic of busy-work.”

Source: RevenueBase Database · checked Sep 20, 2026
23Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 202611-502 contacts →

Partial evidence

“Baerlein & Partners is a boutique strategic communications agency staffed by veteran practitioners who are specialists in their segments of the communications field.”

Source: RevenueBase Database · checked Sep 20, 2026
24Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-102 contacts →

Partial evidence

“Mees Communications is your always-on resource for corporate communications, content strategy and development, influencer relations and more.”

Source: RevenueBase Database · checked Sep 20, 2026
25Partial evidenceBoston, MA, United StatesHQ checked Sep 20, 20261-102 contacts →

Partial evidence

“Little Bird Boston is a Boston-based communications consulting company, specializing in marketing and PR for small businesses, startups and non-profits.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 79 internal communications firms based in Boston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 296 reachable decision-makers.

Free signup · no credit card

View the full list →

Internal communications firms based in Boston, United States at a glance

As of Sep 20, 2026
43.8%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
500.0%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
57
11-50
16
51-200
6

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 79 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 internal 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 Boston, United States whose own description of what they do matches “internal 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 internal 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 internal communications firms, and records with no verified work email. Companies headquartered outside Boston 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, 296 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 20, 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 internal 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 internal communications firms are there based in Boston, United States?

RevenueBase identified 79 internal communications firms headquartered in Boston, 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?

Dewey Square Group, headquartered in Boston, tops this list with the largest team on record.

Which city has the most internal communications firms?

New York leads with 395 headquartered companies, followed by Washington (170) and Chicago (147).

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 296 verified decision-maker contacts tracked across these 79 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 79 internal communications firms based in Boston, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.