Company lists · Data refreshed September 2026

Top 25 Public policy consulting firms based in Washington, United States

RevenueBase identified 597 public policy consulting firms headquartered in Washington, United States as of September 2026 and tracks 6,109 professional contacts across them, including 3,239 with verified work emails. Washington is the largest hub.

This list covers public policy consulting firms headquartered in Washington, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
597Companies
6,109Contacts tracked
3,239Verified emails
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The 25 largest public policy consulting firms based in Washington, United States

Ranked by team size
Top 25 of 597 public policy consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names public policy consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1Washington, DC, United StatesHQ checked Sep 5, 2026201-500255

“Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…”

Source: company website · checked Sep 5, 2026
2
Keller And Heckman LLPStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200230

“Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.”

Source: company website · checked Sep 5, 2026
3
SKDKPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200220

“SKDK provides strategic advice, public relations, crisis communications, advertising, direct mail, and research to national and international companies, advocacy organizations…”

Source: company website · checked Sep 5, 2026
4
DCIStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200198

“DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.”

Source: company website · checked Sep 5, 2026
5
Mcallister & QuinnPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200170

“McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.”

Source: company website · checked Sep 5, 2026
6
InvariantIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200166

“Invariant is a bipartisan business advisory firm, providing strategic advice to companies, trade associations, non-profits, and individuals on how to make Washington work for them.”

Source: company website · checked Sep 5, 2026
7Washington, DC, United StatesHQ checked Sep 5, 2026201-500121

“Edelman’s public and government affairs team of consultants are trusted and experienced public affairs advisors-including former government officials, political advisors, policy…”

Source: company website · checked Sep 5, 2026
8
Monument AdvocacyPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20097

“Monument Advocacy is a bipartisan firm that offers government relations, public affairs, strategic and crisis communications, and digital services.”

Source: company website · checked Sep 5, 2026
9
TFG The Ferguson GroupIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5084

“Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.”

Source: company website · checked Sep 5, 2026
10
VAN Scoyoc AssociatesIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20082

“For more than 30 years, Van Scoyoc Associates (VSA) has been developing and executing tailored government affairs strategies for its clients.”

Source: company website · checked Sep 5, 2026
11
Mclarty AssociatesIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20080

“McLarty Associates, An Ankura Company, is the global strategy firm led by former Clinton White House Chief of Staff Thomas F.”

Source: company website · checked Sep 5, 2026
12
Cassidy & AssociatesIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20079

“At Cassidy and Associates, we make Washington work for you.”

Source: company website · checked Sep 5, 2026
13
Forbes Tate PartnersStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5076

“Bipartisan public affairs firm driving outcomes for our partners that achieve their goals and build value in today’s policy and political landscape.”

Source: company website · checked Sep 5, 2026
14
Gravity ResearchPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20069

“Gravity Research empowers organizations to anticipate risk, spot opportunities, and rationalize reputational concerns against a backdrop of evolving public pressures.”

Source: company website · checked Sep 5, 2026
15
Capitol Counsel, LLCPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5063

“Capitol Counsel, LLC is a full service government relations firm providing political analysis, strategic advice and advocacy services.”

Source: company website · checked Sep 5, 2026
16
Freedman Consulting, LLCStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5061

“Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…”

Source: company website · checked Sep 5, 2026
17
McdermottPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5060

“McDermott+ serves health industry clients with one-stop lobbying services, data analytics and modeling and policy advice.”

Source: company website · checked Sep 5, 2026
18
Beekeeper GroupIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5055

“At Beekeeper Group we believe in empowering people to advocate for impact by connecting them with stakeholders that are ready to take action so that our clients can achieve their…”

Source: company website · checked Sep 5, 2026
19
MindsetStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5053

“Mindset is a bipartisan public policy firm that blends thoughtful research and analysis, strategic advisory services, and sophisticated advocacy to address the challenges and…”

Source: company website · checked Sep 5, 2026
20
The Roosevelt GroupPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5053

“TRG is a government relations consulting firm located on the doorstep of the United States Capitol.”

Source: company website · checked Sep 5, 2026
21
Cgcn GroupIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5052

“CGCN Group is an integrated advocacy and strategic communications firm that specializes in helping Fortune 500 companies, non-profits, and trade associations navigate complex…”

Source: company website · checked Sep 5, 2026
22
Ward Circle StrategiesIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20052

“Ward Circle Strategies, Inc.”

Source: company website · checked Sep 5, 2026
23
Hilltop Public SolutionsIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20052

“At Hilltop, we manage high-stakes, high-profile campaigns, build coalitions and find and mobilize grasstops and grassroots advocates across the country.”

Source: company website · checked Sep 5, 2026
24
Carmen GroupPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-20051

“Carmen Group is Washington’s leading government affairs consulting firm.”

Source: company website · checked Sep 5, 2026
25
Breakwater StrategyPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5050

“Breakwater Strategy is an advisory partner on high-visibility, high-stakes public affairs, corporate reputation and capital markets issues for leading businesses, nonprofits and…”

Source: company website · checked Sep 5, 2026

Showing 25 of 597 public policy consulting firms based in Washington, United States

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Public policy consulting firms based in Washington, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
WashingtonLargest hub · 597 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
432
11-50
137
51-200
22
201-500
5

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 597 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 policy consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Washington, United States whose own description of what they do matches “public policy consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among public policy consulting firms, and records with no verified work email. Companies headquartered outside Washington 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 an evidence 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, 3,239 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 5, 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

How many public policy consulting firms are there based in Washington, United States?

RevenueBase identified 597 public policy consulting firms headquartered in Washington, 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?

Cornerstone Government Affairs, headquartered in Washington, tops this list with the largest team on record.

Which city has the most public policy consulting firms?

Washington leads with 597 headquartered companies, followed by Sacramento (94) and New York (73).

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 3,239 verified decision-maker contacts tracked across these 597 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 5, 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.