Company lists · Data refreshed September 2026

Top 25 Advocacy organizations based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 2,052 companies tracked

RevenueBase identified 2,052 advocacy organizations headquartered in the United States as of September 2026 and tracks 33,022 professional contacts across them, including 12,132 with verified work emails. Washington is the largest hub.

This list covers advocacy organizations headquartered in the 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 19, 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 19, 2026 86% judged on-target in blind review

2,052Companies

33,022Contacts tracked

12,132Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest advocacy organizations based in the United States

Ranked by team size

Top 25 of 2,052 advocacy organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to advocacy organizations: 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	Ahrc NEW York City	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,146 contacts →
	Indirect evidence “AHRC New York City is a Chapter of The Arc New York.” Source: RevenueBase Database · checked Sep 19, 2026
2	Kern County Superintendent Of Schools	Strong evidence	Bakersfield, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,281 contacts →
	Strong evidence “As advocates for children, we provide leadership, education and support for students, school districts and the community through programs, services and fiscal accountability.” Source: RevenueBase Database · checked Sep 19, 2026
3	Heartland Alliance	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,244 contacts →
	Indirect evidence “Heartland Alliance-a leading human-rights organization- believes that everyone benefits when people who experience disparities are able to exit poverty, heal from trauma, and…” Source: RevenueBase Database · checked Sep 19, 2026
4	Healthcare Solutions Team	Strong evidence	Lombard, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	734 contacts →
	Strong evidence “We’re a nationwide team of optimists, health care problem solvers and medical insurance advocates.” Source: RevenueBase Database · checked Sep 19, 2026
5	Iraq And Afghanistan Veterans Of America Iava	Strong evidence	New York, DC, United StatesHQ checked Sep 19, 2026	n/a	417 contacts →
	Strong evidence “Stand up, join the fight and make your voice heard: https://bit.ly/3DqMqOk Everyday Iraq and Afghanistan Veterans of America advocates on behalf of all veterans.” Source: RevenueBase Database · checked Sep 19, 2026
6	DDC Public Affairs	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	411 contacts →
	Strong evidence “DDC Public Affairs builds communities of advocates that impact policy and win campaigns.” Source: RevenueBase Database · checked Sep 19, 2026
7	The ONE Campaign	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	410 contacts →
	Indirect evidence “ONE is a global nonpartisan organization fighting for a more just world by demanding the investments needed to create economic opportunities and healthier lives in Africa.” Source: RevenueBase Database · checked Sep 19, 2026
8	Disability Rights California	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 19, 2026	201-500	380 contacts →
	Strong evidence “We are the largest disability advocacy agency in the nation, with 275 staff members.” Source: RevenueBase Database · checked Sep 19, 2026
9	League Of Women Voters	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	375 contacts →
	Indirect evidence “The League of Women Voters of the United States encourages informed and active participation in government, works to increase understanding of major public policy issues, and…” Source: RevenueBase Database · checked Sep 19, 2026
10	Achieva	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 19, 2026	501-1,000	280 contacts →
	Indirect evidence “VISION: Achieva envisions a community where all people with disabilities lead lives of personal significance.” Source: RevenueBase Database · checked Sep 19, 2026
11	Resource Center For Independent Living, INC	Indirect evidence	Utica, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	270 contacts →
	Indirect evidence “Mission & Core Purpose RCIL is a national healthcare and human services leader operating where community care, social infrastructure, and disability equity meet.” Source: RevenueBase Database · checked Sep 19, 2026
12	Benelynk	Strong evidence	Sunrise, FL, United StatesHQ checked Sep 19, 2026	501-1,000	253 contacts →
	Strong evidence “BeneLynk is a national social care advocate for managed care companies.” Source: RevenueBase Database · checked Sep 19, 2026
13	Coalition For The Homeless, INC	Strong evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	246 contacts →
	Strong evidence “Coalition for the Homeless is the nation's oldest advocacy and direct service organization helping homeless men, women, and children.” Source: RevenueBase Database · checked Sep 19, 2026
14	Vietnam Veterans Of America	Indirect evidence	Silver Spring, MD, United StatesHQ checked Sep 19, 2026	51-200	245 contacts →
	Indirect evidence “Founded in 1978, Vietnam Veterans of America (VVA) is a national veterans organization committed to serving the needs of all veterans.” Source: RevenueBase Database · checked Sep 19, 2026
15	BGR Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	243 contacts →
	Strong evidence “The Services You Need BGR Group offers an integrated suite of bipartisan lobbying, strategic communications and advocacy solutions that help meet challenges in a risky…” Source: RevenueBase Database · checked Sep 19, 2026
16	GMMB	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	239 contacts →
	Indirect evidence “We’re bold.” Source: RevenueBase Database · checked Sep 19, 2026
17	Cohen Milstein Sellers & Toll LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	236 contacts →
	Indirect evidence “Cohen Milstein Sellers & Toll LLP champions the causes of real people-workers, consumers, small business owners, investors, and whistleblowers-working to deliver corporate reforms…” Source: RevenueBase Database · checked Sep 19, 2026
18	Missionwired	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	226 contacts →
	Indirect evidence “At MissionWired, we believe your world-changing cause deserves more than marginal gains.” Source: RevenueBase Database · checked Sep 19, 2026
19	League Of Conservation Voters	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	218 contacts →
	Indirect evidence “LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Source: RevenueBase Database · checked Sep 19, 2026
20	St. John's Community Services	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	501-1,000	211 contacts →
	Indirect evidence “SJCS is different from other agencies.” Source: RevenueBase Database · checked Sep 19, 2026
21	AVŌQ	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	205 contacts →
	Indirect evidence “Excellence isn’t enough.” Source: RevenueBase Database · checked Sep 19, 2026
22	National Association Of Community Health Centers Nachc	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 19, 2026	51-200	204 contacts →
	Strong evidence “As a leading national healthcare advocacy organization, the National Association of Community Health Centers (NACHC) supports Community Health Centers and the expansion of quality…” Source: RevenueBase Database · checked Sep 19, 2026
23	Legal Action Center	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	200 contacts →
	Indirect evidence “LAC is fighting for a future where all people have the opportunity to obtain the jobs, homes, health care, and other life essentials needed to thrive, where everyone’s rights are…” Source: RevenueBase Database · checked Sep 19, 2026
24	Public Citizen	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	195 contacts →
	Strong evidence “Public Citizen is a nonprofit consumer advocacy organization that champions the public interest – your interests – in the halls of power.” Source: RevenueBase Database · checked Sep 19, 2026
25	The ARC Of Chester County	Strong evidence	West Chester, PA, United StatesHQ checked Sep 19, 2026	201-500	174 contacts →
	Strong evidence “The mission of The Arc of Chester County is to advocate, educate, and provide services to empower individuals with disabilities and their families to enhance the quality of their…” Source: RevenueBase Database · checked Sep 19, 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: advocacy organizations. 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 advocacy organizations.
Partial evidence: Its own public description names part of advocacy organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advocacy organizations. 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 2,052 advocacy organizations based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,132 reachable decision-makers.

Free signup · no credit card

View the full list →

Advocacy organizations based in the United States at a glance

As of Sep 19, 2026

36.7%Verified-email coverage

16.1Average contacts per company

1-10Median size (employees)

14.1%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,360

11-50

486

51-200

136

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 2,052 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 advocacy organizations, 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 the United States whose own description of what they do matches “advocacy organizations”. 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 advocacy organizations), 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 advocacy organizations, and records with no verified work email. Companies headquartered outside United States 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, 12,132 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 19, 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.

Advocacy organizations by metro

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 advocacy organizations, 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 advocacy organizations are there based in the United States?

RevenueBase identified 2,052 advocacy organizations headquartered in the 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?

Ahrc NEW York City, headquartered in New York, tops this list with the largest team on record.

Which city has the most advocacy organizations?

Washington leads with 290 headquartered companies, followed by New York (71) and Sacramento (47).

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 12,132 verified decision-maker contacts tracked across these 2,052 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,052 advocacy organizations based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Advocacy organizations by geography

Browse the directory

Browse: Companies home · All United States lists · All Advocacy organizations lists · New 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.