Company lists · Data refreshed September 2026

Top 25 Grassroots consulting firms based in Washington, United States

Name: Grassroots consulting firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 444 companies tracked

RevenueBase identified 444 grassroots consulting firms headquartered in Washington, United States as of September 2026 and tracks 4,076 professional contacts across them, including 1,701 with verified work emails. Across the United States, Washington is the largest hub for this category.

This list covers grassroots 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 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 28, 2026 86% judged on-target in blind review

444Companies

4,076Contacts tracked

1,701Verified emails

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The 25 largest grassroots consulting firms based in Washington, United States

Ranked by team size

Top 25 of 444 grassroots consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to grassroots consulting 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	Fieldworks	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	5,001-10,000	336 contacts →
	Partial evidence “FieldWorks brings innovative grassroots and field strategies to Democratic and progressive campaigns and organizations.” Source: RevenueBase Database · checked Sep 28, 2026
2	Cornerstone Government Affairs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	255 contacts →
	Indirect evidence “Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Source: RevenueBase Database · checked Sep 28, 2026
3	M R	Indirect evidence	Washington, United StatesHQ checked Sep 28, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 28, 2026
4	DCI	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	198 contacts →
	Strong evidence “DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.” Source: RevenueBase Database · checked Sep 28, 2026
5	Mcallister & Quinn	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	170 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
6	Invariant	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	166 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
7	The Kaizen Company	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	150 contacts →
	Indirect evidence “Kaizen, a Tetra Tech company, offers an alternative approach to development.” Source: RevenueBase Database · checked Sep 28, 2026
8	The Cohen Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	110 contacts →
	Indirect evidence “Who We Are A talented team of experts with years of experience in both government and industry, with a passion for finding solutions and a deep understanding of the institutions…” Source: RevenueBase Database · checked Sep 28, 2026
9	Hilltop Consultants	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	101 contacts →
	Partial evidence “Hilltop Consultants is a consulting organization entirely run by Georgetown University undergraduates that executes and leads 6-7 strategy consulting projects each semester for…” Source: RevenueBase Database · checked Sep 28, 2026
10	TFG The Ferguson Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	84 contacts →
	Indirect evidence “Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Source: RevenueBase Database · checked Sep 28, 2026
11	Freedman Consulting, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	61 contacts →
	Partial evidence “Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…” Source: RevenueBase Database · checked Sep 28, 2026
12	Strategix Management LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	59 contacts →
	Indirect evidence “Founded in 2016 by President and CEO, Jonathan Crawley, Strategix Management LLC employs cutting-edge technology to streamline and ignite program activities that increase the…” Source: RevenueBase Database · checked Sep 28, 2026
13	The Roosevelt Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	53 contacts →
	Partial evidence “TRG is a government relations consulting firm located on the doorstep of the United States Capitol.” Source: RevenueBase Database · checked Sep 28, 2026
14	Cgcn Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	52 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
15	Ward Circle Strategies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “Ward Circle Strategies, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
16	Hilltop Public Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	52 contacts →
	Partial evidence “At Hilltop, we manage high-stakes, high-profile campaigns, build coalitions and find and mobilize grasstops and grassroots advocates across the country.” Source: RevenueBase Database · checked Sep 28, 2026
17	Advocacy Associates	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	51 contacts →
	Partial evidence “Advocacy Associates specializes in strategic grassroots and advocacy approaches designed to address the individual needs of our clients - no cookie cutter approaches are allowed.” Source: RevenueBase Database · checked Sep 28, 2026
18	Carmen Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	51 contacts →
	Partial evidence “Carmen Group is Washington’s leading government affairs consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
19	Making Cents International	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	48 contacts →
	Partial evidence “Making Cents International is a results-driven development consulting firm founded on the principles of social entrepreneurship.” Source: RevenueBase Database · checked Sep 28, 2026
20	BTG	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “At BTG, we provide turnkey solutions that minimize risk and optimize the inclusion of small businesses on large, complex projects.” Source: RevenueBase Database · checked Sep 28, 2026
21	Deliver Strategies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	34 contacts →
	Indirect evidence “Our firm was founded so that hardworking Americans have a loud, strong voice in the political process.” Source: RevenueBase Database · checked Sep 28, 2026
22	West END Strategy Team	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Strategic communications succeeds when it inspires change.” Source: RevenueBase Database · checked Sep 28, 2026
23	Kountoupes Denham Carr & Reid Kdcr Partners	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Kountoupes Denham Carr and Reid is a women-owned and -led bipartisan, results driven firm that offers clients invaluable assistance in navigating the legislative and political…” Source: RevenueBase Database · checked Sep 28, 2026
24	Collaborative Communications Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Collaborative Communications is a national communications consultancy dedicated to efforts that help build a more educated, engaged, and equal society, where every child and young…” Source: RevenueBase Database · checked Sep 28, 2026
25	The Normandy Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	25 contacts →
	Indirect evidence “The Normandy Group is a bipartisan government relations and public affairs firm based in Washington DC.” Source: RevenueBase Database · checked Sep 28, 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: grassroots consulting 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 grassroots consulting firms.
Partial evidence: Its own public description names part of grassroots consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grassroots consulting 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 444 grassroots consulting firms based in Washington, United States

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Grassroots consulting firms based in Washington, United States at a glance

As of Sep 28, 2026

41.7%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

349

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 444 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 grassroots consulting 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 Washington, United States whose own description of what they do matches “grassroots consulting 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 grassroots consulting 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 grassroots 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 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, 1,701 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 28, 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.

Grassroots consulting firms 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 grassroots consulting 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 grassroots consulting firms are there based in Washington, United States?

RevenueBase identified 444 grassroots 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?

Fieldworks, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most grassroots consulting firms?

Washington leads the United States with 444 headquartered companies, followed by New York (310) and Chicago (206).

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 1,701 verified decision-maker contacts tracked across these 444 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 28, 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.