Company lists · Data refreshed September 2026
Top 25 Pro bono law firms based in Philadelphia, United States
RevenueBase identified 45 pro bono law firms headquartered in Philadelphia, United States as of September 2026 and tracks 2,537 professional contacts across them, including 921 with verified work emails. Across the United States, New York is the largest hub for this category (139 companies); Philadelphia has 45.
This list covers pro bono law firms headquartered in Philadelphia, 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 14, 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 pro bono law firms based in Philadelphia, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 916 contacts → | ||||
Indirect evidence “Inspired People.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 290 contacts → | ||||
Indirect evidence “Community Legal Services (CLS) is nationally recognized as a model legal services program.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 240 contacts → | ||||
Partial evidence “Founded in 1933, Dilworth Paxson conducts a broad and diverse regional law practice representing a wide variety of clients ranging from Fortune 500 companies to closely-held…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 124 contacts → | ||||
Indirect evidence “Reger Rizzo & Darnall LLP is a firm with a proven track record of success.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 97 contacts → | ||||
Indirect evidence “Founded in 1996, Philadelphia Legal Assistance (PLA) provides free civil legal services to over individuals and families in Philadelphia who cannot afford an attorney each year.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 72 contacts → | ||||
Strong evidence “The Support Center for Child Advocates is the nation’s oldest and largest program dedicated exclusively to providing pro bono legal services for children in crisis.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 46 contacts → | ||||
Indirect evidence “SeniorLAW Center's mission is to improve the lives of older Pennsylvanians and protect their rights through legal representation, education and advocacy.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 35 contacts → | ||||
Indirect evidence “Philadelphia VIP was founded in 1981 by the Philadelphia Bar Association and Community Legal Services to meet the legal needs of low-income Philadelphians by recruiting and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 28 contacts → | ||||
Partial evidence “Law practice representing labor since 1937.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Indirect evidence “ABOUT THE FIRM Astor Weiss Kaplan & Mandel, LLP offers a broad range of expert legal services to its clients by providing high-quality representation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Partial evidence “Regional Housing Legal Services is a nonprofit law firm with unique expertise in affordable, sustainable housing and its related components, community and economic development…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 16 contacts → | ||||
Indirect evidence “Philadelphia Lawyers for Social Equity (PLSE) is a 501(c)(3) non-profit legal aid organization.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 contacts → | ||||
Indirect evidence “Justice at Work is a 501(c)(3) legal services organization, whose mission is to support low-wage workers as they pursue economic and social justice.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Partial evidence “Ferreira Law is focused on helping clients with their legal needs in the areas of immigration law, family law, and real estate law.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 11 contacts → | ||||
Strong evidence “CLCP is a faith-based legal services organization that seeks to "do justice with the love of God" through providing pro bono and low-cost services to individuals, nonprofits and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Partial evidence “Steve Harvey Law LLC, based in Philadelphia, Pennsylvania, is a team of lawyers that advises and represents clients in litigation and at trial.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “Gay Chacker & Ginsburg was founded in Philadelphia in 1965.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “Kenneth L.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Partial evidence “Koller Law, LLC is a proven Employment Law Firm that has been providing representation and legal counsel for both employees and employers in Pennsylvania and New Jersey.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “For more than four decades, Arnold Dranoff and Stephen P.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “Founded in 1972, Lyman & Ash has a history of protecting the rights of individuals, with trial and appellate experience at all levels, and has helped shape the law through…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Partial evidence “JustLaws is a social impact law firm that helps small businesses and nonprofit institutions successfully navigate barriers and challenges from state and local government.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “TadrossLaw was founded with the goal of helping our clients with their legal needs, whether they be litigation or transactional issues.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “The Law Office of John F.” Source: RevenueBase Database · checked Sep 14, 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: pro bono law 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 pro bono law firms.
- Partial evidence
- Its own public description names part of pro bono law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name pro bono law 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 45 pro bono law firms based in Philadelphia, United States
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Pro bono law firms based in Philadelphia, United States at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 45 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 pro bono law 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 Philadelphia, 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.
- 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 pro bono law 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 pro bono law firms, and records with no verified work email. Companies headquartered outside Philadelphia 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, 921 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 14, 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 in the United States
- Pro bono law firms in New York139
- Pro bono law firms in Los Angeles84
- Pro bono law firms in Chicago81
- Pro bono law firms in Houston71
- Pro bono law firms in Washington55
- Pro bono law firms in Miami50
- Pro bono law firms in Atlanta49
- Pro bono law firms in Denver46
- Pro bono law firms in Minneapolis43
- Pro bono law firms in Seattle43
- Pro bono law firms in San Francisco42
- Pro bono law firms in Dallas41
- Pro bono law firms in Boston38
- Pro bono law firms in Orlando38
- Pro bono law firms in Phoenix37
- Pro bono law firms in San Antonio31
- Pro bono law firms in Las Vegas30
- Pro bono law firms in San Diego29
- Pro bono law firms in Austin27
- Pro bono law firms in Charlotte27
- Pro bono law firms in Portland27
- Pro bono law firms in Indianapolis26
- Pro bono law firms in Columbus25
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 pro bono law 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 pro bono law firms are there based in Philadelphia, United States?
RevenueBase identified 45 pro bono law firms headquartered in Philadelphia, 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?
Saul Ewing LLP, headquartered in Philadelphia, tops this list with the largest team on record.
Which city in the United States has the most pro bono law firms?
New York leads the United States with 139 headquartered companies, followed by Los Angeles (84) and Chicago (81). Philadelphia has 45.
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 921 verified decision-maker contacts tracked across these 45 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 14, 2026.
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Pro bono law firms by geography
- Pro bono law firms based in the United States
- Pro bono law firms based in Brazil
- Pro bono law firms based in Canada
- Pro bono law firms based in the United Kingdom
- Pro bono law firms based in France
- Pro bono law firms based in Australia
- Pro bono law firms based in Spain
- Pro bono law firms based in the Netherlands
- Pro bono law firms based in Italy
- Pro bono law firms based in Germany
- Pro bono law firms based in South Africa
- Pro bono law firms based in Belgium
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.