Company lists · Data refreshed September 2026

Top 25 Public affairs consultancies based in Boston, United States

Name: Public affairs consultancies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 45 companies tracked

RevenueBase identified 45 public affairs consultancies headquartered in Boston, United States as of September 2026 and tracks 307 professional contacts across them, including 150 with verified work emails. Washington is the largest hub.

This list covers public affairs consultancies 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 14, 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 14, 2026 86% judged on-target in blind review

45Companies

307Contacts tracked

150Verified emails

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The 25 largest public affairs consultancies based in Boston, United States

Ranked by team size

Top 25 of 45 public affairs consultancies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to public affairs consultancies: 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	O'neill And Associates	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	48 contacts →
	Partial evidence “O’Neill and Associates is New England’s leading full-service government relations, crisis and public relations firm.” Source: RevenueBase Database · checked Sep 14, 2026
2	Issues Management Group	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	44 contacts →
	Strong 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 14, 2026
3	Shawmut Strategies Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	18 contacts →
	Indirect evidence “At Shawmut Strategies Group, we make government more accessible so our clients can thrive.” Source: RevenueBase Database · checked Sep 14, 2026
4	Tremont Strategies Group	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	16 contacts →
	Strong evidence “Tremont Strategies Group is a full-service government affairs and public-policy consulting firm offering a broad suite of practices and a steadfast commitment to delivering the…” Source: RevenueBase Database · checked Sep 14, 2026
5	Slowey Mcmanus Communications	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	14 contacts →
	Strong evidence “With offices in Boston and Worcester and affiliates in New York City, Slowey McManus Communications provides strategic public relations, communications, and public affairs…” Source: RevenueBase Database · checked Sep 14, 2026
6	Benchmark Strategies	Strong evidence	Boston, United StatesHQ checked Sep 14, 2026	11-50	13 contacts →
	Strong evidence “Benchmark Strategies is a Boston-based public affairs firm led by Patrick Bench.” Source: RevenueBase Database · checked Sep 14, 2026
7	Smith, Costello & Crawford	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	13 contacts →
	Indirect evidence “Smith, Costello & Crawford is a regulatory and legislative policy firm dedicated to helping our clients achieve success through consulting, lobbying, and law services.” Source: RevenueBase Database · checked Sep 14, 2026
8	Charles Group Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	11 contacts →
	Indirect evidence “Since 2001, Charles Group Consulting (CGC) has provided its clients with unparalleled access to state government and guidance toward achieving successful outcomes for their…” Source: RevenueBase Database · checked Sep 14, 2026
9	Bulfinch Strategies Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	10 contacts →
	Indirect evidence “Building and launching a successful strategy requires more than just getting you in the door with the right policymakers.” Source: RevenueBase Database · checked Sep 14, 2026
10	Serlin Haley, LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	9 contacts →
	Indirect evidence “Based in Boston with offices in Washington DC, Maine and California, Serlin Haley offers a full range of government relations services to businesses and trade organizations at the…” Source: RevenueBase Database · checked Sep 14, 2026
11	Melwood Global	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	7 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 14, 2026
12	Nardo & Associates	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	7 contacts →
	Indirect evidence “NARDO & ASSOCIATES advises counsel, principals, and board in high-stakes matters involving conflict, scrutiny, and operational disruption.” Source: RevenueBase Database · checked Sep 14, 2026
13	The Brennan Group, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	6 contacts →
	Partial evidence “At The Brennan Group, our mission is to provide our clients with successful government affairs strategies.” Source: RevenueBase Database · checked Sep 14, 2026
14	The Novus Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	5 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 14, 2026
15	Merrimack Potomac Charles	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “Merrimack Potomac + Charles is a full-service, strategic advisory with offices up and down the East Coast.” Source: RevenueBase Database · checked Sep 14, 2026
16	Northwind Strategies	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Strong evidence “Northwind Strategies offers full-service strategic communications, campaign management, and public affairs services for corporations, nonprofits and grassroots campaigns and…” Source: RevenueBase Database · checked Sep 14, 2026
17	The Allen Company LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “To companies needing business development, political organizations needing an assist with communications, fundraising, or strategy, schools looking to reach the next level, or any…” Source: RevenueBase Database · checked Sep 14, 2026
18	Consensus Strategies	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	3 contacts →
	Partial evidence “Consensus Strategies is a national consulting firm specializing in land use politics, public opinion research, and strategic advocacy.” Source: RevenueBase Database · checked Sep 14, 2026
19	Dempsey Associates	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Indirect evidence “Government Relations experts specializing in Legislative and Executive Branch lobbying, Appropriations and Funding, and Regulatory matters.” Source: RevenueBase Database · checked Sep 14, 2026
20	Gray Media INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Strong evidence “Gray Media is a public affairs PR firm specializing in communication strategy issues, especially in the nexus of the government and private sectors.” Source: RevenueBase Database · checked Sep 14, 2026
21	Baerlein & Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	2 contacts →
	Indirect 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 14, 2026
22	Highbury Strategies	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Indirect evidence “Highbury Strategies provides the strategic guidance, tools, and experience to mobilize support for issues, influence policy fights and win tough campaigns.” Source: RevenueBase Database · checked Sep 14, 2026
23	The Suffolk Group, LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Partial evidence “The Suffolk Group, LLC is a multidisciplinary professional services firm, specializing in improving business performance through government affairs.” Source: RevenueBase Database · checked Sep 14, 2026
24	OAK & Argyle	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Partial evidence “Oak & Argyle is a full-service government affairs, strategic communications, and real estate development consulting firm.” Source: RevenueBase Database · checked Sep 14, 2026
25	27 South Strategies	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	1 contacts →
	Indirect evidence “27 South Strategies is a people-powered government relations firm, rewriting the playbook at all levels of government.” Source: RevenueBase Database · checked Sep 14, 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: public affairs consultancies. 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 public affairs consultancies.
Partial evidence: Its own public description names part of public affairs consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name public affairs consultancies. 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 45 public affairs consultancies based in Boston, United States

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Public affairs consultancies based in Boston, United States at a glance

As of Sep 14, 2026

48.9%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

1286.7%Largest-city concentration · Washington

Sep 14, 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 Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 45 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 public affairs consultancies, 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 “public affairs consultancies”. 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 public affairs consultancies), 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 public affairs consultancies, 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, 150 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 14, 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.

Public affairs consultancies by metro in the United States

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 public affairs consultancies, 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 public affairs consultancies are there based in Boston, United States?

RevenueBase identified 45 public affairs consultancies 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?

O'neill And Associates, headquartered in Boston, tops this list with the largest team on record.

Which city has the most public affairs consultancies?

Washington leads with 579 headquartered companies, followed by Sacramento (92) and New York (84).

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 150 verified decision-maker contacts tracked across these 45 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 14, 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.