Company lists · Data refreshed September 2026

Top 25 Advocacy organizations consulting firms based in the United States

Name: Advocacy organizations consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 12,596 companies tracked

RevenueBase identified 12,596 company matches for advocacy organizations consulting firms associated with the United States as of September 2026 and tracks 125,564 professional contacts across them, including 57,251 with verified work emails. Washington is the largest hub.

This list covers company matches for advocacy organizations consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

12,596Companies

125,564Contacts tracked

57,251Verified emails

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The 25 largest advocacy organizations consulting firms based in the United States

Ranked by team size

Top 25 of 12,596 company matches for advocacy organizations consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kearney	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 2026	5,001-10,000	6,978 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	ABT Global	Exact match	Rockville, MD, United StatesHQ recorded Sep 27, 2026	1,001-5,000	3,323 contacts →
	Exact match “Abt is a mission-driven consulting and research firm.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Nelson Mullins Riley & Scarborough	Exact match	Columbia, SC, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,012 contacts →
	Exact match “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Taft Stettinius & Hollister LLP	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,980 contacts →
	Exact match “At Taft, we work as one team, driven and committed to helping you succeed.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Faegre Drinker	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,848 contacts →
	Exact match “Faegre Drinker is a firm designed for clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	FGS Global	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,814 contacts →
	Exact match “FGS Global is the strategic leadership advisory for a complex world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Analysis Group	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,781 contacts →
	Exact match “Analysis Group is one of the largest international economics consulting firms, with more than 1,500 professionals across 15 offices in North America, Europe, and Asia.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Ballard Spahr LLP	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,682 contacts →
	Exact match “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	APCO	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,578 contacts →
	Exact match “APCO is a global advisory and advocacy firm helping organizations build the un/common ground upon which progress is made.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Fisher Phillips	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,471 contacts →
	Exact match “With hundreds of attorneys across the globe, Fisher Phillips advises and advocates for employers internationally on some of the most complex and high-profile workplace matters.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Ardurra	Exact match	Miami, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,260 contacts →
	Exact match “Expertly balancing experience and innovation to deliver unique solutions to public and private clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Manatt, Phelps & Phillips, LLP	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,085 contacts →
	Exact match “Forget everything you thought you knew about professional services firms.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Brownstein Hyatt Farber Schreck	Exact match	Denver, CO, United StatesHQ recorded Sep 27, 2026	501-1,000	902 contacts →
	Exact match “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Porter Novelli	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	821 contacts →
	Exact match “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	The Vertex Companies LLC	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	765 contacts →
	Exact match “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Lucas Group	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 27, 2026	10001+	756 contacts →
	Exact match “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	CCS Fundraising	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	728 contacts →
	Exact match “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Pinion	Exact match	Loveland, CO, United StatesHQ recorded Sep 27, 2026	501-1,000	697 contacts →
	Exact match “Pinion is a business advisory provider, ‘U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Fennemore	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 27, 2026	501-1,000	674 contacts →
	Exact match “Since 1885, Fennemore has provided legal counsel to help clients thrive in a complex, evolving business and legal landscape.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	ERG	Exact match	Concord, MA, United StatesHQ recorded Sep 27, 2026	501-1,000	663 contacts →
	Exact match “ERG is a multidisciplinary consulting firm offering a broad range of professional services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Health Management Associates	Exact match	Okemos, MI, United StatesHQ recorded Sep 27, 2026	501-1,000	658 contacts →
	Exact match “Health Management Associates is an independent national research and consulting firm specializing in complex health care program and policy issues.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Wiley Rein LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	501-1,000	576 contacts →
	Exact match “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Acumen, LLC	Exact match	Burlingame, CA, United StatesHQ recorded Sep 27, 2026	501-1,000	570 contacts →
	Exact match “Acumen, LLC works to improve the information provided to policymakers who design and revise welfare, health, education, labor, and business programs at the national, state, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Solomonedwards	Exact match	Wayne, PA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	557 contacts →
	Exact match “For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	JBS International, INC	Exact match	North Bethesda, MD, United StatesHQ recorded Sep 27, 2026	201-500	506 contacts →
	Exact match “Established in 1985 by two women, JBS International, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “advocacy organizations consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 12,596 advocacy organizations consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 57,251 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Advocacy organizations consulting firms based in the United States at a glance

As of Sep 27, 2026

45.6%Verified-email coverage

10.0Average contacts per company

1-10Median size (employees)

10.3%Largest-city concentration · Washington

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

10,155

11-50

1,959

51-200

370

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 12,596 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “advocacy organizations consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 57,251 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Advocacy organizations consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advocacy organizations consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advocacy organizations consulting firms are there based in the United States?

RevenueBase identified 12,596 company matches for advocacy organizations consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kearney tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most advocacy organizations consulting firms?

Washington leads with 1296 company records, followed by New York (639) and Chicago (327).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 57,251 professional contacts with verified work emails tracked across these 12,596 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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.