Company lists · Data refreshed September 2026

Top 25 Pro bono marketing firms based in the United States

RevenueBase identified 970 company matches for pro bono marketing firms associated with the United States as of September 2026 and tracks 4,435 professional contacts across them, including 1,124 with verified work emails. New York is the largest hub.

This list covers company matches for pro bono marketing 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 20, 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 20, 2026 How this list was built
970Companies
4,435Contacts tracked
1,124Verified emails
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The 25 largest pro bono marketing firms based in the United States

Ranked by team size
Top 25 of 970 company matches for pro bono marketing firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchEl Segundo, CA, United StatesHQ recorded Sep 20, 2026501-1,000148 contacts →

Exact match

“Martindale-Avvo comprises the online legal brands Martindale-Hubbell, Martindale-Nolo, Ngage, Captorra, and Avvo, and connects attorneys with millions of prospective clients every…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 20, 202651-200139 contacts →

Exact match

“Boncom is a full-service advertising agency specializing in bridging the gap between belief and behavior.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-50105 contacts →

Exact match

“Plan B is a full-service, B Corp-certified marketing agency with a talent for pushing boundaries and a passion for positive change.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLansing, MI, United StatesHQ recorded Sep 20, 202611-5075 contacts →

Exact match

“Strengthening Communities.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchIrvine, CA, United StatesHQ recorded Sep 20, 202611-5051 contacts →

Exact match

“We are a full-service marketing firm.” “Our clients view us not as vendors, but as partners.” “We specialize in omni-channel branding campaigns that.” How many times have you seen…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchCleveland, OH, United StatesHQ recorded Sep 20, 202651-20044 contacts →

Exact match

“Beechmont Country Club is a Marketing and Advertising company located in 29600 Chagrin Blvd, Cleveland, Ohio, United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5043 contacts →

Exact match

“There is no one named Phil here.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchSt Augustine, FL, United StatesHQ recorded Sep 20, 202611-5039 contacts →

Exact match

“As a Google Certified Professional Agency, we develop meaningful relationships with nonprofits to help develop a comprehensive online marketing plan by leveraging our experience…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchBoston, MA, United StatesHQ recorded Sep 20, 2026n/a37 contacts →

Exact match

“SOAR strengthens nonprofits through collaborative, pro bono consulting that builds organizational capacity and deepens community impact while fostering an enriching learning…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, CA, United StatesHQ recorded Sep 20, 202611-5036 contacts →

Exact match

“Since ECHO's founding in 2002, we have worked with over for-profit and nonprofit organizations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5035 contacts →

Exact match

“Lawyers Alliance for New York is the leading provider of business and transactional legal services for nonprofit organizations and social enterprises that are improving the…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-20032 contacts →

Exact match

“Lipman Hearne has joined Yes & , an independent, fully-integrated creative agency designed to redefine what’s possible.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchAtlanta, GA, United StatesHQ recorded Sep 20, 2026n/a31 contacts →

Exact match

“48in48 is a 501c3 social entrepreneurship organization that brings marketing professionals together to create websites and digital materials to help nonprofits extend their impact.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5030 contacts →

Exact match

“We believe that progress doesn’t happen on its own.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchPhoenix, AZ, United StatesHQ recorded Sep 20, 202651-20029 contacts →

Exact match

“For more than 25 years, The Rainmaker Institute has helped law firms grow through integrated marketing, technology, and business development.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchCharleston, SC, United StatesHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“Really good marketing & design.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchNew York, United StatesHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“Town Hall is a full-service marketing & advertising agency built to serve organizations that do good, shape futures, and make the world a better place.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchCuyahoga Falls, OH, United StatesHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“Founded in 1994, TRIAD creates award-winning marketing and design for businesses, government, non-profits and foundations throughout northeast Ohio and across the US.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchWoodbridge, VA, United StatesHQ recorded Sep 20, 202651-20027 contacts →

Exact match

“Cowles Parkway Ford is a Marketing and Advertising company located in 13779 Noblewood Plz, Woodbridge, Virginia, United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchMansfield, OH, United StatesHQ recorded Sep 20, 202611-5024 contacts →

Exact match

“Lighting the way to your business' success.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAustin, TX, United StatesHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“Purpose is an award-winning brand and growth advisory and full-service PR and marketing services firm that serves the world's most purpose-driven brands and agencies, AI and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchJacksonville, FL, United StatesHQ recorded Sep 20, 202611-5022 contacts →

Exact match

“Established in 2006, ruckus is a full service marketing and advertising agency with a focus on supporting organizations that do good.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchKingston, MA, United StatesHQ recorded Sep 20, 202651-20021 contacts →

Exact match

“Indian Pond Country Club Inc is a Marketing and Advertising company located in 60 Country Club Way, Kingston, Massachusetts, United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchOakland, CA, United StatesHQ recorded Sep 20, 202611-5020 contacts →

Exact match

“Evolved to meet the digital marketing needs of visionary organizations, Colibri Digital Marketing is San Francisco’s first and only full-service, B Corp-certified digital…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchOmaha, NE, United StatesHQ recorded Sep 20, 202611-5020 contacts →

Exact match

“KreativElement is a group of people who are passionate about helping you define your brand and engage with your audience.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 970 pro bono marketing firms based in the United States

See the full list, filter by size, metro and specialty, and access 1,124 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 20, 2026
25.3%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
4.3%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
790
11-50
159
51-200
18
501-1,000
1

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 970 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 “pro bono marketing 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 1,124 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 20, 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.

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 “pro bono marketing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 970 company matches for pro bono marketing 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?

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

Which city has the most pro bono marketing firms?

New York leads with 42 company records, followed by Chicago (21) and Los Angeles (21).

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 1,124 professional contacts with verified work emails tracked across these 970 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 20, 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.