Company lists · Data refreshed September 2026
Top 25 Nonprofit organizations based in the United States
RevenueBase identified 1,423 nonprofit organizations headquartered in the United States as of September 2026 and tracks 59,748 professional contacts across them, including 6,718 with verified work emails. New York is the largest hub.
This list covers nonprofit 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.
The 25 largest nonprofit organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 31,282 contacts → | ||||
Indirect evidence “For 175 years, the Y has been a place where meaningful connections help build stronger communities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,215 contacts → | ||||
Strong evidence “PLOS is a nonprofit 501(c)(3) corporation,#C2354500, and is based in California, US.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 879 contacts → | ||||
Indirect evidence “Established since 1972, CNC is a non-profit organization providing human services to persons in need from all racial and ethnic groups.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 775 contacts → | ||||
Strong evidence “THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 762 contacts → | ||||
Indirect evidence “BronxWorks helps individuals and families improve their economic and social well-being.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 561 contacts → | ||||
Indirect evidence “Mi Casa Resource Center® (MCRC) is committed to creating pathways to opportunity for low-income and underserved individuals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 513 contacts → | ||||
Indirect evidence “Since 1973, we've offered services designed to support every generation and meet the needs of the communities we serve- Seniors, Housing, Education, Health, and Empowerment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 444 contacts → | ||||
Indirect evidence “At Providencia we are focused on positively impacting the communities where we operate, the lives of vulnerable and underserved populations around the world, and the health of our…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 398 contacts → | ||||
Indirect evidence “Mosholu Montefiore Community Center (MMCC) is the largest not-for-profit provider of quality education, employment, and health and recreation programs in the impoverished…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 363 contacts → | ||||
Strong evidence “Sunnyside Community Services (SCS) is a community-based nonprofit centered on the belief that every person deserves meaningful support to achieve their aspirations – especially…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 326 contacts → | ||||
Indirect evidence “Founded in 1918, Jewish Family Service of San Diego (JFS) is a people-centered, impact-driven organization working to build a stronger and healthier community where everyone can…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 314 contacts → | ||||
Strong evidence “United Planning Organization (UPO) is a nonprofit human services organization whose mission is to Unite People with Opportunities so they can lift themselves into economic…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 303 contacts → | ||||
Indirect evidence “Oswego County Opportunities (OCO) inspires partnerships and provides services that empower people, support communities and change lives.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 286 contacts → | ||||
Indirect evidence “United Way of Greater Houston creates opportunities for every person in our community to thrive.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 285 contacts → | ||||
Indirect evidence “As part of the largest not-for-profit community based organization in America, the YMCA of the Pikes Peak Region is committed to extending our charitable heritage by directly…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 243 contacts → | ||||
Strong evidence “Our name means “The Spirit of Serving Others.” It’s who we are and why we believe there’s no higher value than partnering with nonprofits to make the world a better place.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 227 contacts → | ||||
Indirect evidence “CDS Life Transitions represents the evolution of the leading not-for-profit organization to meet changes, just as the butterfly of its mark has evolved.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 208 contacts → | ||||
Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 206 contacts → | ||||
Indirect evidence “Volunteers of America Mid-States creates positive change in the lives of individuals and communities through a ministry of service.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 197 contacts → | ||||
Indirect evidence “Goodwill of Western and Northern Connecticut strengthens communities by helping people with disabilities and other disadvantages maximize independence through job training and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 185 contacts → | ||||
Indirect evidence “Founded in 1997, SE Works is a registered 501(C-3) with a 20-year history of successfully engaging multi-barriered, low income, underserved populations, including at-risk youth…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 181 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 169 contacts → | ||||
Indirect evidence “Penquis is a community of people who have joined in a common mission to assist individuals and families in preventing, reducing, or eliminating poverty in their lives and, through…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 159 contacts → | ||||
Indirect evidence “Everyone knows the Y as a place to camp, swim, or exercise, but we’re so much more.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 159 contacts → | ||||
Indirect evidence “Special Service for Groups (SSG) is a non-profit organization dedicated to providing community-based solutions to the social and economic issues facing those in greatest need.” Source: RevenueBase Database · checked Sep 20, 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: nonprofit 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 organizations.
- Partial evidence
- Its own public description names part of nonprofit organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nonprofit 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 1,423 nonprofit organizations based in the United States
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Nonprofit organizations based in the United States at a glance
As of Sep 20, 2026Companies by employee count
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 1,423 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 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 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 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 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, 6,718 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 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 organizations are there based in the United States?
RevenueBase identified 1,423 nonprofit 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?
Ymca Of The USA, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most nonprofit organizations?
New York leads with 44 headquartered companies, followed by Atlanta (39) and Chicago (35).
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 6,718 verified decision-maker contacts tracked across these 1,423 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.
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