Company lists · Data refreshed September 2026

Top 25 Pro bono law firms based in the United States

Name: Pro bono law 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 5, 2026 2,905 companies tracked

RevenueBase identified 2,905 pro bono law firms headquartered in the United States as of September 2026 and tracks 39,821 professional contacts across them, including 16,036 with verified work emails and 17,204 with mobile numbers. New York is the largest hub.

This list covers pro bono law firms 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, 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

2,905Companies

39,821Contacts tracked

16,036Verified emails

17,204Mobile numbers

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The 25 largest pro bono law firms based in the United States

Ranked by team size

Top 25 of 2,905 pro bono law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names pro bono law 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.
#	Company	Headquarters	Employees	Contacts
1	The United Firm LA Liga Defensora, APCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	518
	“The United Firm \| La Liga Defensora, A.P.C.” Source: company website · checked Sep 5, 2026
2	Public Defender Service For The District Of ColumbiaIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	201-500	515
	“The Public Defender Service for the District of Columbia (PDS) provides and promotes quality legal representation to indigent adults and children facing a loss of liberty in the…” Source: company website · checked Sep 5, 2026
3	Brooklyn DefendersIndirect evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 2026	501-1,000	500
	“Brooklyn Defender Services is a public defense office whose mission is to provide outstanding representation and advocacy free of cost to people facing loss of freedom, family…” Source: company website · checked Sep 5, 2026
4	NEW York Legal Assistance GroupIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	444
	“New York Legal Assistance Group (NYLAG) is a leading civil legal services organization combatting economic, racial, and social injustices by advocating for people experiencing…” Source: company website · checked Sep 5, 2026
5	Legal AID Of North CarolinaIndirect evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	201-500	435
	“Every day, North Carolinians face life-changing civil legal issues such as domestic violence, unsafe housing, veteran benefits, disaster recovery, and consumer scams without…” Source: company website · checked Sep 5, 2026
6	Rocket LawyerIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	423
	“At Rocket Lawyer, we believe everyone deserves affordable and simple legal services.” Source: company website · checked Sep 5, 2026
7	NEW Jersey Office Of The Public DefenderIndirect evidence	Trenton, NJ, United StatesHQ checked Sep 5, 2026	1,001-5,000	403
	“The New Jersey Office of the Public Defender (NJOPD) is the country's premiere statewide legal services organization, providing criminal defense and other services to indigent…” Source: company website · checked Sep 5, 2026
8	Alexandra Lozano Immigration LAW PllcPartial evidence	Tukwila, WA, United StatesHQ checked Sep 5, 2026	501-1,000	388
	“Alexandra Lozano Immigration Law transforms the lives of immigrants and their families!” Source: company website · checked Sep 5, 2026
9	Legal Services NYCIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	378
	“Legal Services NYC fights poverty and seeks justice for low-income New Yorkers.” Source: company website · checked Sep 5, 2026
10	Texas Riogrande Legal AIDIndirect evidence	Mercedes, TX, United StatesHQ checked Sep 5, 2026	201-500	314
	“Texas RioGrande Legal Aid provides free legal services to people who cannot afford an attorney in 68 southwestern counties, including the entire Texas-Mexico border.” Source: company website · checked Sep 5, 2026
11	Maryland Legal AIDPartial evidence	Baltimore, MD, United StatesHQ checked Sep 5, 2026	201-500	298
	“Maryland Legal Aid (MLA) is a statewide private, nonprofit law firm that provides free, civil legal services to low-income and vulnerable people to address their most fundamental…” Source: company website · checked Sep 5, 2026
12	Community Legal Services Of PhiladelphiaIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	290
	“Community Legal Services (CLS) is nationally recognized as a model legal services program.” Source: company website · checked Sep 5, 2026
13	Connell Foley LLPIndirect evidence	Roseland, NJ, United StatesHQ checked Sep 5, 2026	201-500	288
	“Since 1938, Connell Foley LLP has been unwavering in its commitment to meeting the needs of clients, employees, and the community while maintaining the highest ethical standards…” Source: company website · checked Sep 5, 2026
14	Legal AID Of Northwest TexasIndirect evidence	Fort Worth, TX, United StatesHQ checked Sep 5, 2026	201-500	280
	“Legal Aid of NorthWest Texas provides free civil legal services to eligible low-income residents in 114 Texas counties.” Source: company website · checked Sep 5, 2026
15	Neighborhood Defender ServiceIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	268
	“Neighborhood Defender Service (NDS) is known nationally and internationally for its innovative, community-based, holistic public defense practice.” Source: company website · checked Sep 5, 2026
16	Legal AID Foundation Of LOS AngelesIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	257
	“Legal Aid Foundation of Los Angeles achieves justice for people living in poverty across Los Angeles County.” Source: company website · checked Sep 5, 2026
17	Greater Boston Legal ServicesIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	252
	“Greater Boston Legal Services (GBLS) plays an indispensable role in the lives of people living in poverty in the Boston area by providing free, high-quality civil (non-criminal)…” Source: company website · checked Sep 5, 2026
18	Legal Services Of NEW JerseyIndirect evidence	Edison, NJ, United StatesHQ checked Sep 5, 2026	201-500	247
	“Legal Services of New Jersey (LSNJ), an independent, non-profit organization, coordinates the statewide Legal Services system.” Source: company website · checked Sep 5, 2026
19	Neighborhood Legal Services Of LOS Angeles CountyIndirect evidence	Glendale, CA, United StatesHQ checked Sep 5, 2026	51-200	240
	“Each year Neighborhood Legal Services of Los Angeles County (NLSLA) provides free assistance to more than individuals and families through innovative projects that expand access…” Source: company website · checked Sep 5, 2026
20	California Rural Legal Assistance, INCPartial evidence	Modesto, CA, United StatesHQ checked Sep 5, 2026	201-500	230
	“California Rural Legal Assistance, Inc.(CRLA) is an anti-poverty law firm that dismantles unjust systems through community lawyering in California’s historically rural areas.” Source: company website · checked Sep 5, 2026
21	Northwest Justice ProjectPartial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	201-500	226
	“As a dynamic statewide law firm, NJP pursues its mission through legal advice and representation, community partnerships, and education to empower clients and combat injustice in…” Source: company website · checked Sep 5, 2026
22	Foster Swift Collins & Smith, PCIndirect evidence	Lansing, MI, United StatesHQ checked Sep 5, 2026	201-500	222
	“Foster Swift has helped businesses, public entities, families, and individuals navigate legal challenges and discover opportunities across Michigan for more than 120 years.” Source: company website · checked Sep 5, 2026
23	Heplerbroom LLCIndirect evidence	Edwardsville, IL, United StatesHQ checked Sep 5, 2026	201-500	217
	“HeplerBroom LLC is committed to bringing Excellence, Results, and Integrity to everything we do.” Source: company website · checked Sep 5, 2026
24	Legal AID Society Of SAN DiegoIndirect evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	201-500	208
	“The Legal Aid Society of San Diego is a proud, committed and compassionate group of people dedicated to providing equal access to justice for poor people through aggressive…” Source: company website · checked Sep 5, 2026
25	Coblentz Patch Duffy & Bass LLPIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	51-200	200
	“Like most respected firms, we have many ways to tout our skill, our experience, and our results.” Source: company website · checked Sep 5, 2026

Showing 25 of 2,905 pro bono law firms based in the United States

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Pro bono law firms based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 109 HQs

17,204Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

1,999

11-50

639

51-200

203

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

14,924

31–60

1,045

61–90

90–180

180+

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 pro bono law 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 the United States whose own description of what they do matches “pro bono law 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 pro bono law firms, 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 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, 16,036 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.

Pro bono law firms by metro

Frequently asked

How many pro bono law firms are there based in the United States?

RevenueBase identified 2,905 pro bono law firms 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?

The United Firm LA Liga Defensora, APC, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most pro bono law firms?

New York leads with 109 headquartered companies, followed by Chicago (69) and Los Angeles (67).

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 16,036 verified decision-maker contacts tracked across these 2,905 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.