Company lists · Data refreshed September 2026

Top 25 Youth mentoring nonprofits based in Boston, United States

Name: Youth mentoring nonprofits based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 65 companies tracked

RevenueBase identified 65 youth mentoring nonprofits headquartered in Boston, United States as of September 2026 and tracks 1,912 professional contacts across them, including 524 with verified work emails. New York is the largest hub.

This list covers youth mentoring nonprofits headquartered in Boston, 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 22, 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 22, 2026 86% judged on-target in blind review

65Companies

1,912Contacts tracked

524Verified emails

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The 25 largest youth mentoring nonprofits based in Boston, United States

Ranked by team size

Top 25 of 65 youth mentoring nonprofits based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to youth mentoring nonprofits: 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	JA Worldwide	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1,001-5,000	327 contacts →
	Partial 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 22, 2026
2	Boys And Girls Clubs Of Boston	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	201-500	279 contacts →
	Indirect evidence “Boys & Girls Clubs of Boston is a 501(c)3 whose mission is to help young people, especially those who need us most, build strong character and realize their full potential as…” Source: RevenueBase Database · checked Sep 22, 2026
3	Artists For Humanity	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	51-200	184 contacts →
	Indirect evidence “Artists For Humanity (AFH) harnesses the power of mentorship and paid professional experiences to inspire teens to build their future.” Source: RevenueBase Database · checked Sep 22, 2026
4	BIG Brothers BIG Sisters Of Eastern Massachusetts	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	51-200	136 contacts →
	Indirect evidence “For more than 60 years, Big Brothers Big Sisters of Eastern Massachusetts has worked to ensure that every child has the support from caring adults that they need for healthy…” Source: RevenueBase Database · checked Sep 22, 2026
5	Mentor	Strong evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	126 contacts →
	Strong evidence “MENTOR is the unifying champion for quality youth mentoring in the United States.” Source: RevenueBase Database · checked Sep 22, 2026
6	Tenacity	Partial evidence	Boston, United StatesHQ checked Sep 22, 2026	11-50	106 contacts →
	Partial evidence “Tenacity is a city-wide Boston youth development organization focused on closing the achievement and opportunity gaps for underserved Boston youth.” Source: RevenueBase Database · checked Sep 22, 2026
7	Youth Enrichment Services	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	93 contacts →
	Partial evidence “Founded in 1968, Youth Enrichment Services (YES) is a thriving non-profit organization providing Boston youth with year-round outdoor programs and leadership development…” Source: RevenueBase Database · checked Sep 22, 2026
8	Boston Scores	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	51-200	66 contacts →
	Partial evidence “Boston SCORES provides urban youth with team-based education programs that promote health & well-being, academic engagement, and civic leadership.” Source: RevenueBase Database · checked Sep 22, 2026
9	Center For Teen Empowerment, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	62 contacts →
	Partial evidence “Teen Empowerment (TE) inspires inner-city youth to think deeply about the most difficult issues in their communities and provides them with the tools they need to work together to…” Source: RevenueBase Database · checked Sep 22, 2026
10	Peace First	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	55 contacts →
	Partial evidence “Peace First is a global incubator for youth led social change.” Source: RevenueBase Database · checked Sep 22, 2026
11	St. Stephen's Youth Programs	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	49 contacts →
	Indirect evidence “The mission of St.” Source: RevenueBase Database · checked Sep 22, 2026
12	Silver Lining Mentoring	Strong evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	39 contacts →
	Strong evidence “Our mission is to empower youth in foster care to thrive through committed mentoring relationships and the development of essential life skills.” Source: RevenueBase Database · checked Sep 22, 2026
13	The Valedictorian Project	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	n/a	36 contacts →
	Indirect evidence “We believe in a more equitable future where every student has the network and guidance to achieve their goals.” Source: RevenueBase Database · checked Sep 22, 2026
14	Minds Matter Boston	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	35 contacts →
	Indirect evidence “Minds Matter Boston connects driven and determined students from low-income families with the people, preparation, and possibilities to succeed in college, create their future…” Source: RevenueBase Database · checked Sep 22, 2026
15	Friends Of The Children-Boston	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	31 contacts →
	Partial evidence “Friends of the Children-Boston (Friends-Boston) creates generational change by engaging children from high-risk communities in twelve and a half years of transformative mentoring…” Source: RevenueBase Database · checked Sep 22, 2026
16	Arkanum INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	24 contacts →
	Indirect evidence “ARKanum brings teens with mentors as a family, fostering key character building skills that will help them on their way to lifelong success.” Source: RevenueBase Database · checked Sep 22, 2026
17	Mass Mentoring Partnership	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “Mass Mentoring Partnership (MMP), is committed to ensuring that all young people in Massachusetts have the mentoring relationships they need to develop into thriving, engaged…” Source: RevenueBase Database · checked Sep 22, 2026
18	Future Chefs	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	16 contacts →
	Partial evidence “Future Chefs prepares urban youth in Greater Boston for quality early employment and post-secondary education opportunities in the culinary field and supports them in developing a…” Source: RevenueBase Database · checked Sep 22, 2026
19	Elevate Youth	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	11 contacts →
	Partial evidence “The mission of Elevate Youth (EY) is to empower underserved, urban youth to explore the outdoors alongside mentors, sharing awe and the richness of our natural world.” Source: RevenueBase Database · checked Sep 22, 2026
20	Mentorpro	Partial evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “MentorPRO is a cutting-edge, evidence-based mentoring platform designed to help organizations launch, manage, and scale effective mentoring programs across education, workforce…” Source: RevenueBase Database · checked Sep 22, 2026
21	ONE Bead	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “At One Bead, we partner exclusively with elementary and middle schools in low-income communities where students identify predominantly as African American or Hispanic/Latino.” Source: RevenueBase Database · checked Sep 22, 2026
22	Massachusetts Youth Leadership Foundation	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	51-200	4 contacts →
	Indirect evidence “MYL Foundation provides outstanding high school students with the skills, opportunities, and inspiration to affect positive change in their communities.” Source: RevenueBase Database · checked Sep 22, 2026
23	Music & Youth Initiative	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “We create accessible, sustainable, high quality music programs so every young person can experience the magic of music.” Source: RevenueBase Database · checked Sep 22, 2026
24	Sparkshare INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “The SparkShare framework was developed in direct response to what we heard from young people and that spirit of active listening remains a core component of both what we teach and…” Source: RevenueBase Database · checked Sep 22, 2026
25	Global Deeds Foundation, INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Strong evidence “Global Deeds is devoted to disrupting the cycle of poverty by assisting schools, nonprofits, and corporations to empower disadvantaged youth through innovative educational and…” Source: RevenueBase Database · checked Sep 22, 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: youth mentoring nonprofits. 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 youth mentoring nonprofits.
Partial evidence: Its own public description names part of youth mentoring nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name youth mentoring nonprofits. 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 65 youth mentoring nonprofits based in Boston, United States

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Youth mentoring nonprofits based in Boston, United States at a glance

As of Sep 22, 2026

27.4%Verified-email coverage

29.4Average contacts per company

1-10Median size (employees)

383.1%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 65 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 youth mentoring nonprofits, 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 Boston, United States whose own description of what they do matches “youth mentoring nonprofits”. 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 youth mentoring nonprofits), 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 youth mentoring nonprofits, and records with no verified work email. Companies headquartered outside Boston 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, 524 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 22, 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.

Youth mentoring nonprofits by metro in the United States

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 youth mentoring nonprofits, 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 youth mentoring nonprofits are there based in Boston, United States?

RevenueBase identified 65 youth mentoring nonprofits headquartered in Boston, 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?

JA Worldwide, headquartered in Boston, tops this list with the largest team on record.

Which city has the most youth mentoring nonprofits?

New York leads with 249 headquartered companies, followed by Los Angeles (188) and Chicago (171).

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 524 verified decision-maker contacts tracked across these 65 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 22, 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.