Company lists · Data refreshed September 2026

Top 25 Nonprofit mentoring organizations based in the United States

Name: Nonprofit mentoring organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 5,361 companies tracked

RevenueBase identified 5,361 nonprofit mentoring organizations headquartered in the United States as of September 2026 and tracks 79,514 professional contacts across them, including 18,114 with verified work emails. New York is the largest hub.

This list covers nonprofit mentoring 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

5,361Companies

79,514Contacts tracked

18,114Verified emails

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The 25 largest nonprofit mentoring organizations based in the United States

Ranked by team size

Top 25 of 5,361 nonprofit mentoring 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 mentoring 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SEO Sponsors For Educational Opportunity	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	n/a	3,870 contacts →
	Indirect evidence “Founded in 1963 during the Civil Rights Movement, SEO closes educational and career opportunity gaps for ambitious young people annually.” Source: RevenueBase Database · checked Sep 20, 2026
2	Management Leadership For Tomorrow	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	n/a	2,927 contacts →
	Indirect evidence “Management Leadership for Tomorrow (MLT) is a non-profit organization that is changing the face of leadership across sectors and driving breakthrough results for individuals and…” Source: RevenueBase Database · checked Sep 20, 2026
3	BIG Brothers BIG Sisters Of America	Partial evidence	Tampa, FL, United StatesHQ checked Sep 20, 2026	n/a	1,948 contacts →
	Partial evidence “Our mission is to create and support one-to-one mentoring relationships that ignite the power and promise of youth.” Source: RevenueBase Database · checked Sep 20, 2026
4	Score Mentors	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	n/a	1,328 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
5	Genesys Works	Partial evidence	Keller, TX, United StatesHQ checked Sep 20, 2026	n/a	1,042 contacts →
	Partial evidence “Genesys Works is a nonprofit social enterprise providing pathways to career success for high school students in underserved communities through skills training, meaningful work…” Source: RevenueBase Database · checked Sep 20, 2026
6	After School Matters	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	n/a	810 contacts →
	Indirect evidence “Each year, After School Matters provides life-changing after-school and summer program opportunities to nearly Chicago high school teens.” Source: RevenueBase Database · checked Sep 20, 2026
7	REM And Company	Indirect evidence	St. Louis, United StatesHQ checked Sep 20, 2026	201-500	577 contacts →
	Indirect evidence “49% of Businesses fail within their first 5 years.” Source: RevenueBase Database · checked Sep 20, 2026
8	Urban Alliance	Strong evidence	Washington, United StatesHQ checked Sep 20, 2026	51-200	558 contacts →
	Strong evidence “Urban Alliance is a nonprofit that connects young adults with paid work experiences, professional development, dedicated mentoring, and networking opportunities to help them…” Source: RevenueBase Database · checked Sep 20, 2026
9	America Needs YOU	Partial evidence	New York, NJ, United StatesHQ checked Sep 20, 2026	n/a	502 contacts →
	Partial evidence “America Needs You is the national nonprofit connecting ambitious, first-generation college students with transformative mentorship and intensive career development for economic…” Source: RevenueBase Database · checked Sep 20, 2026
10	Youth Guidance	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	500 contacts →
	Indirect evidence “Youth Guidance creates and implements school-based programs that enable children to overcome obstacles, focus on their education and, ultimately, to succeed in school and in life.” Source: RevenueBase Database · checked Sep 20, 2026
11	TIE	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 20, 2026	n/a	480 contacts →
	Partial 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
12	BUILD	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 20, 2026	51-200	462 contacts →
	Indirect evidence “Founded in BUILD uses entrepreneurship-based, experiential learning to ignite the potential of youth in under-resourced communities and equip them for high school, college and…” Source: RevenueBase Database · checked Sep 20, 2026
13	SASE	Indirect evidence	Denver, CO, United StatesHQ checked Sep 20, 2026	51-200	460 contacts →
	Indirect evidence “SASE is a 501(c)(3) organization.” Source: RevenueBase Database · checked Sep 20, 2026
14	Consult Your Community	Partial evidence	New York City, NY, United StatesHQ checked Sep 20, 2026	201-500	447 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
15	Road To Hire	Indirect evidence	Fort Mill, SC, United StatesHQ checked Sep 20, 2026	51-200	441 contacts →
	Indirect evidence “OUR MISSION Road to Hire invests in the untapped potential of underrepresented young adults by breaking down barriers to career success.” Source: RevenueBase Database · checked Sep 20, 2026
16	Para LOS Niños	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	423 contacts →
	Indirect evidence “Founded on Skid Row in 1980, our model fosters pathways to success through powerful families, strong communities, and excellence in education for children and youth to thrive.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ymca Of Greater Cincinnati	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 20, 2026	1,001-5,000	406 contacts →
	Indirect evidence “Our Mission To put Christian principles into practice through programs that build a healthy spirit, mind and body for all.” Source: RevenueBase Database · checked Sep 20, 2026
18	Hbcu First	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	n/a	402 contacts →
	Indirect evidence “HBCU First is a student-led, employer-powered community advancing the wellbeing and economic participation of America's youth.” Source: RevenueBase Database · checked Sep 20, 2026
19	JVS Socal	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	398 contacts →
	Partial evidence “JVS SoCal offers hope and opportunity to our diverse community through job training, mentoring and education, combined with expert career guidance and employer partnerships…” Source: RevenueBase Database · checked Sep 20, 2026
20	12	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 20, 2026	51-200	378 contacts →
	Indirect evidence “12+ is a 501(c)(3) non-profit organization that helps students achieve postsecondary success.” Source: RevenueBase Database · checked Sep 20, 2026
21	JA Worldwide	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	327 contacts →
	Indirect evidence “As one of the world’s largest and most impactful youth-serving NGOs, JA Worldwide delivers hands-on, immersive learning in entrepreneurship, work readiness, and financial health.” Source: RevenueBase Database · checked Sep 20, 2026
22	Friends Of The Children	Indirect evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	201-500	324 contacts →
	Indirect evidence “Friends of the Children was founded in 1993 in Portland, OR with just three Friends-salaried, professional mentors-and 24 children.” Source: RevenueBase Database · checked Sep 20, 2026
23	Public Allies	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	51-200	300 contacts →
	Indirect evidence “Since 1992, Public Allies has helped thousands of underrepresented emerging leaders serve our country, get on successful pathways to higher education and careers, and bring…” Source: RevenueBase Database · checked Sep 20, 2026
24	Global Mentorship Initiative	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 20, 2026	n/a	292 contacts →
	Partial evidence “Global Mentorship Initiative (GMI) is a U.S-based nonprofit organization that helps historically underrepresented graduates worldwide secure their first professional roles and…” Source: RevenueBase Database · checked Sep 20, 2026
25	American Corporate Partners ACP	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	285 contacts →
	Partial evidence “American Corporate Partners (ACP) is a 501(c)(3) nonprofit organization dedicated to assisting transitioning US Service Members, Veterans and Active-Duty Military Spouses find…” Source: RevenueBase Database · checked Sep 20, 2026

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: nonprofit mentoring 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 nonprofit mentoring organizations.
Partial evidence: Its own public description names part of nonprofit mentoring organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit mentoring 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 5,361 nonprofit mentoring organizations based in the United States

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Nonprofit mentoring organizations based in the United States at a glance

As of Sep 20, 2026

22.8%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,317

11-50

1,394

51-200

540

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 5,361 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 mentoring 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 mentoring 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 mentoring 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 mentoring 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, 18,114 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.

Nonprofit mentoring organizations by metro

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 mentoring 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 mentoring organizations are there based in the United States?

RevenueBase identified 5,361 nonprofit mentoring 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?

SEO Sponsors For Educational Opportunity, headquartered in New York, tops this list with the largest team on record.

Which city has the most nonprofit mentoring organizations?

New York leads with 220 headquartered companies, followed by Los Angeles (150) and Chicago (149).

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 18,114 verified decision-maker contacts tracked across these 5,361 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.