Company lists · Data refreshed September 2026

Top 25 Nonprofit business support organizations based in the United States

RevenueBase identified 3,990 nonprofit business support organizations headquartered in the United States as of September 2026 and tracks 34,730 professional contacts across them, including 7,743 with verified work emails. New York is the largest hub.

This list covers nonprofit business support 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 20, 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 20, 2026 86% judged on-target in blind review
3,990Companies
34,730Contacts tracked
7,743Verified emails
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The 25 largest nonprofit business support organizations based in the United States

Ranked by team size
Top 25 of 3,990 nonprofit business support organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit business support 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWashington, DC, United StatesHQ checked Sep 20, 2026n/a1,328 contacts →

Indirect evidence

“SCORE is the nation’s largest network of volunteer, expert business mentors, with more than volunteers serving all 50 U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceSt. Louis, United StatesHQ checked Sep 20, 2026201-500577 contacts →

Indirect evidence

“49% of Businesses fail within their first 5 years.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 20, 2026n/a480 contacts →

Indirect evidence

“TiE Inc, also known as TiE Global is a non-profit organization with the mission of fostering entrepreneurship, through mentoring, networking and education.”

Source: RevenueBase Database · checked Sep 20, 2026
4Partial evidenceNew York City, NY, United StatesHQ checked Sep 20, 2026201-500447 contacts →

Partial evidence

“Consult Your Community is a 501(c)(3) nonprofit working to empower every entrepreneur to have the economic freedom to pursue the American Dream.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceUnited StatesHQ checked Sep 20, 2026n/a229 contacts →

Indirect evidence

“F6S helps millions of founders and their companies grow.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceSanta Rosa, CA, United StatesHQ checked Sep 20, 2026n/a228 contacts →

Indirect evidence

“Welcome to the Sonoma Small Business Development Center (SBDC), providing technical assistance to small businesses and aspiring entrepreneurs throughout Sonoma County.”

Source: RevenueBase Database · checked Sep 20, 2026
7Strong evidenceLowell, MA, United StatesHQ checked Sep 20, 202651-200223 contacts →

Strong evidence

“Entrepreneurship for All (EforAll) is a national nonprofit organization offering aspiring entrepreneurs the training and support needed to launch and grow a business or nonprofit.”

Source: RevenueBase Database · checked Sep 20, 2026
8Partial evidenceChicago, IL, United StatesHQ checked Sep 20, 202651-200216 contacts →

Partial evidence

“Grounded in equity and deep sector expertise, IFF champions nonprofits to shape more equitable and vibrant communities through community-centered lending, development, and real…”

Source: RevenueBase Database · checked Sep 20, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-200212 contacts →

Partial evidence

“Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceWashington, United StatesHQ checked Sep 20, 202651-200208 contacts →

Indirect evidence

“We are M+R.”

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidenceGrand Junction, United StatesHQ checked Sep 20, 2026n/a191 contacts →

Partial evidence

“The Grand Junction Business Incubator Center * Supportive Entrepreneurial Community * Free Consulting & Low Cost Training * Business Loans & Financing * Colorado State Tax Credits…”

Source: RevenueBase Database · checked Sep 20, 2026
12Strong evidenceLincoln, NE, United StatesHQ checked Sep 20, 202651-200181 contacts →

Strong evidence

“FES is a nonprofit foundation that provides support to communities and nonprofit organizations so they can focus on fulfilling their missions.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceLehi, UT, United StatesHQ checked Sep 20, 2026n/a177 contacts →

Indirect evidence

“Our mission is to empower small businesses to achieve success.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceFully Distributed, UT, United StatesHQ checked Sep 20, 2026201-500172 contacts →

Indirect evidence

“Nav exists to give every small business owner the chance to succeed.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceBentonville, AR, United StatesHQ checked Sep 20, 2026501-1,000157 contacts →

Indirect evidence

“Welcome to Walmart Business, your trusted partner in creating a stronger economy and resilient communities.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 20, 202651-200137 contacts →

Indirect evidence

“Accion Opportunity Fund is a leading national provider of affordable loans, educational resources, coaching, and thriving networks for underserved small businesses.”

Source: RevenueBase Database · checked Sep 20, 2026
17Indirect evidenceBrunswick, ME, United StatesHQ checked Sep 20, 202651-200136 contacts →

Indirect evidence

“Welcome to CEI, a leader in rural business development.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceScarsdale, NY, United StatesHQ checked Sep 20, 202611-50131 contacts →

Partial evidence

“The Acceleration Project (TAP) is a nonprofit organization with a mission to unlock pathways to wealth creation and economic mobility by accelerating under-resourced small…”

Source: RevenueBase Database · checked Sep 20, 2026
19Partial evidenceDenver, CO, United StatesHQ checked Sep 20, 2026n/a128 contacts →

Partial evidence

“Community Resource Center (CRC) creates opportunities, tools, and strategies to develop nonprofits and community groups to strengthen Colorado.”

Source: RevenueBase Database · checked Sep 20, 2026
20Partial evidenceUsa, United StatesHQ checked Sep 20, 202651-200125 contacts →

Partial evidence

“BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceWashington Township, OH, United StatesHQ checked Sep 20, 2026n/a125 contacts →

Indirect evidence

“Wizard was founded to help small and mid-sized business owners grow without losing their soul.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceCleveland, OH, United StatesHQ checked Sep 20, 202651-200122 contacts →

Indirect evidence

“Our mission is to drive economic vitality by connecting entrepreneurs to the opportunities and resources they need to succeed.”

Source: RevenueBase Database · checked Sep 20, 2026
23Partial evidenceDetroit, MI, United StatesHQ checked Sep 20, 202611-50115 contacts →

Partial evidence

“Accounting Aid Society - Growing an Economy That Works for Everyone Accounting Aid Society (AAS) is a nonprofit organization that offers free tax help and counseling; financial…”

Source: RevenueBase Database · checked Sep 20, 2026
24Partial evidenceMount Juliet, TN, United StatesHQ checked Sep 20, 202651-200112 contacts →

Partial evidence

“Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceNorthridge, CA, United StatesHQ checked Sep 20, 202651-200109 contacts →

Indirect evidence

“Charter Impact is a comprehensive back-office solution empowering charter schools and other non-profits with strategic financial management, operational expertise, and data-driven…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 3,990 nonprofit business support organizations based in the United States

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Nonprofit business support organizations based in the United States at a glance

As of Sep 20, 2026
22.3%Verified-email coverage
8.7Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
3,115
11-50
588
51-200
238
201-500
25
501-1,000
12
1,001-5,000
4
5,001-10,000
5
10001+
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 3,990 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 nonprofit business support 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 “nonprofit business support 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 nonprofit business support 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 nonprofit business support 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, 7,743 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 20, 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 nonprofit business support 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 nonprofit business support organizations are there based in the United States?

RevenueBase identified 3,990 nonprofit business support 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?

Score Mentors, headquartered in Washington, tops this list with the largest team on record.

Which city has the most nonprofit business support organizations?

New York leads with 115 headquartered companies, followed by Chicago (97) and Washington (81).

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 7,743 verified decision-maker contacts tracked across these 3,990 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 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 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.