Company lists · Data refreshed September 2026
Top 25 Civil liberties organizations based in the United States
RevenueBase identified 118 civil liberties organizations headquartered in the United States as of September 2026 and tracks 4,194 professional contacts across them, including 1,690 with verified work emails. Washington is the largest hub.
This list covers civil liberties 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.
The 25 largest civil liberties organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,092 contacts → | ||||
Indirect evidence “The ACLU is an non-profit, non-partisan organization of people who believe in the power of action.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 206 contacts → | ||||
Indirect evidence “Through strategic litigation, training, communication, activism and research, the Institute for Justice advances a rule of law under which individuals can control their destinies…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 136 contacts → | ||||
Strong evidence “The Electronic Frontier Foundation (EFF) is the leading organization defending civil liberties in the digital world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 128 contacts → | ||||
Strong evidence “The New York Civil Liberties Union (NYCLU) advances the civil rights and civil liberties for all New Yorkers to live with dignity, liberty, justice, and equality.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 97 contacts → | ||||
Partial evidence “The Leadership Conference on Civil and Human Rights is a diverse coalition of more than 240 organizations representing the majority of America.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 80 contacts → | ||||
Indirect evidence “The ACLU of Southern Californnia, founded in 1923, advocates for individual liberty and equality and is a leading guardian against unwarranted government interference and abuse.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 61 contacts → | ||||
Strong evidence “MISSION The ACLU of Georgia enhances and defends the civil liberties and rights of all Georgians through legal action, legislative and community advocacy, and civic education and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 55 contacts → | ||||
Partial evidence “We work daily in the courts, legislatures and in the community to defend and preserve the individual rights and liberties guaranteed to every person in this country by the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 53 contacts → | ||||
Indirect evidence “The ACLU of Massachusetts-a private, nonpartisan organization with more than supporters across the Commonwealth and over online activists-is a state affiliate of the national ACLU.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 52 contacts → | ||||
Indirect evidence “We are the ACLU's Pennsylvania affiliate, defending the Constitution and the Bill of Rights through litigation, advocacy, and community education and outreach.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Indirect evidence “Freedom Forum is a nonpartisan, nonprofit organization dedicated to fostering First Amendment freedoms for all.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 44 contacts → | ||||
Indirect evidence “The ACLU works daily in the courts and in our communities to defend the individual rights guaranteed by the Constitution and laws of the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 43 contacts → | ||||
Strong evidence “The ACLU is the nation's premier civil rights and civil liberties organization.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 40 contacts → | ||||
Indirect evidence “The ACLU of Illinois has been the principal protector of constitutional rights in the state since its founding in 1929.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 37 contacts → | ||||
Strong evidence “Founded in 1952 as the Minnesota Civil Liberties Union, the ACLU of Minnesota fights to protect the civil liberties of Minnesotans through litigation, public education, and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 37 contacts → | ||||
Strong evidence “The ACLU of Colorado defends the civil rights & civil liberties of all Coloradans, working daily in courts, the legislature and communities to defend and preserve the individual…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 36 contacts → | ||||
Strong evidence “Since our founding in 1920, the American Civil Liberties Union has led the fight to conserve our most precious liberties.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 33 contacts → | ||||
Strong evidence “The Muslim Legal Fund of America is a charity that funds legal cases and programs in defense of civil liberties and legal rights in America specializing in national security cases.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 31 contacts → | ||||
Partial evidence “The Disability Rights Education & Defense Fund is a leading national civil rights law and policy center directed by individuals with disabilities and parents who have children…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 31 contacts → | ||||
Strong evidence “The American Civil Liberties Union of Missouri (ACLU-MO) is a non-partisan, not-for-profit, membership organization dedicated to the preservation and promotion of civil liberties…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 30 contacts → | ||||
Strong evidence “The American Civil Liberties Union of Wisconsin was founded in 1930 and is the state affiliate of the national ACLU, which was founded in 1920.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 30 contacts → | ||||
Strong evidence “No fight for civil liberties ever stays won.” – Roger Baldwin, founder of the national ACLU Our Mission: The mission of the ACLU of Delaware is to preserve and advance civil…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 29 contacts → | ||||
Indirect evidence “RATHOD |MOHAMEDBHAI LLC is a law firm of experienced trial attorneys representing individuals.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Strong evidence “The American Civil Liberties Union (ACLU) of Virginia is a private, non-profit organization that promotes civil liberties and civil rights for everyone in the Commonwealth through…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 27 contacts → | ||||
Indirect evidence “We are a nonprofit, nonpartisan organization that reaches out to and represents anyone whose fundamental freedoms have been violated.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: civil liberties 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 civil liberties organizations.
- Partial evidence
- Its own public description names part of civil liberties organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name civil liberties 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 118 civil liberties organizations based in the United States
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Civil liberties organizations based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 118 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 civil liberties 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 “civil liberties 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 civil liberties 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 civil liberties 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, 1,690 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.
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 civil liberties 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 civil liberties organizations are there based in the United States?
RevenueBase identified 118 civil liberties 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?
ACLU, headquartered in United States, tops this list with the largest team on record.
Which city has the most civil liberties organizations?
Washington leads with 17 headquartered companies, followed by New York (5) and Indianapolis (3).
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 1,690 verified decision-maker contacts tracked across these 118 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.
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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.
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