Company lists · Data refreshed September 2026

Top 25 Human service organizations based in the United States

RevenueBase identified 2,033 human service organizations headquartered in the United States as of September 2026 and tracks 144,696 professional contacts across them, including 38,592 with verified work emails. New York is the largest hub.

This list covers human service 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 19, 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 19, 2026 86% judged on-target in blind review
2,033Companies
144,696Contacts tracked
38,592Verified emails
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The 25 largest human service organizations based in the United States

Ranked by team size
Top 25 of 2,033 human service organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to human service 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 evidenceSanta Ana, CA, United StatesHQ checked Sep 19, 2026n/a12,023 contacts →

Indirect evidence

“Casa de la Familia (CDLF) is a 501(c)(3) non-profit organization founded in 1996 by Clinical Psychologist Dr.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceAlexandria, VA, United StatesHQ checked Sep 19, 202610001+4,505 contacts →

Indirect evidence

“At Volunteers of America, we are more than a nonprofit organization.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 19, 20261,001-5,0002,282 contacts →

Indirect evidence

“Sheppard Pratt is the largest private, nonprofit provider of mental health, substance use, developmental disability, special education, and social services in the country.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261,001-5,0001,756 contacts →

Indirect evidence

“WE BELIEVE … in compassion, love and respect for all people, especially those who are poor and vulnerable.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceGarden City, NY, United StatesHQ checked Sep 19, 20261,001-5,0001,632 contacts →

Indirect evidence

“SCO Family of Services helps New Yorkers build a strong foundation for the future.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceMeadowbrook, PA, United StatesHQ checked Sep 19, 20261,001-5,0001,531 contacts →

Indirect evidence

“With an emphasis on providing a continuum of care, Redeemer Health remains true to the mission to care, comfort and heal that its Founders, the Sisters of the Redeemer, began in…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceMiddleton, WI, United StatesHQ checked Sep 19, 2026n/a1,524 contacts →

Indirect evidence

“WayForward Resources provides access to nutritious food for all Dane County residents and support that helps people stay in their homes in Middleton, Cross Plains and parts of…”

Source: RevenueBase Database · checked Sep 19, 2026
8Strong evidencePhiladelphia, PA, United StatesHQ checked Sep 19, 20261,001-5,0001,502 contacts →

Strong evidence

“Resources for Human Development is a comprehensive human services organization based in Philadelphia.”

Source: RevenueBase Database · checked Sep 19, 2026
9Strong evidenceCambridge, MA, United StatesHQ checked Sep 19, 20261,001-5,0001,319 contacts →

Strong evidence

“Vinfen is one of the most dynamic and innovative health and human services organizations in the country.”

Source: RevenueBase Database · checked Sep 19, 2026
10Strong evidenceNeedham, MA, United StatesHQ checked Sep 19, 20261,001-5,0001,291 contacts →

Strong evidence

“Justice Resource Institute is dedicated to addressing the most confounding challenges of both the human services and educational systems and the persons and families these systems…”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceBrooklyn, United StatesHQ checked Sep 19, 20261,001-5,0001,288 contacts →

Indirect evidence

“CAMBA serves nearly individuals and families each year, citywide, including over youth.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceLexington, MA, United StatesHQ checked Sep 19, 20261,001-5,0001,281 contacts →

Indirect evidence

“For over 70 years, Eliot has been providing hope, healing and opportunity to children, youth, families, and adults throughout Massachusetts.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 19, 20261,001-5,0001,137 contacts →

Indirect evidence

“Endeavors is a national service organization that serves our communities’ most vulnerable populations.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceWilliamsville, NY, United StatesHQ checked Sep 19, 20261,001-5,0001,089 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261,001-5,0001,038 contacts →

Indirect evidence

“At The New York Foundling, we believe that all people-no matter circumstance or zip code-have the opportunity to reach their full potential.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceRochester, NY, United StatesHQ checked Sep 19, 20261,001-5,000977 contacts →

Indirect evidence

“Heritage Christian Services partners with thousands of people throughout Rochester and Buffalo to ensure everyone – including children and people with developmental disabilities –…”

Source: RevenueBase Database · checked Sep 19, 2026
17Strong evidenceSpringfield, MA, United StatesHQ checked Sep 19, 20261,001-5,000883 contacts →

Strong evidence

“The Center for Human Development, Inc.(CHD) provides a broad range of high quality, community-oriented human services dedicated to promoting, enhancing, and protecting the dignity…”

Source: RevenueBase Database · checked Sep 19, 2026
18Strong evidenceMiami, FL, United StatesHQ checked Sep 19, 2026n/a879 contacts →

Strong 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 19, 2026
19Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261,001-5,000844 contacts →

Indirect evidence

“At HELP USA, we work to ensure that everyone has a place to call home.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceSt. Paul, MN, United StatesHQ checked Sep 19, 20261,001-5,000784 contacts →

Indirect evidence

“Lutheran Social Service of Minnesota is the largest, statewide non-profit social service organization in Minnesota with over 2,300 employees serving in 300 communities.”

Source: RevenueBase Database · checked Sep 19, 2026
21Strong evidenceBurlington, VT, United StatesHQ checked Sep 19, 20261,001-5,000763 contacts →

Strong evidence

“Situated alongside Lake Champlain, we are the largest private non-profit human services organization in the State of Vermont.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceBronx, NY, United StatesHQ checked Sep 19, 2026501-1,000762 contacts →

Indirect evidence

“BronxWorks helps individuals and families improve their economic and social well-being.”

Source: RevenueBase Database · checked Sep 19, 2026
23Strong evidenceClarks Summit, PA, United StatesHQ checked Sep 19, 20261,001-5,000719 contacts →

Strong evidence

“Allied Services is the leading provider of healthcare and human services for northeastern Pennsylvanians with disabilities and chronic illness.”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceGaithersburg, MD, United StatesHQ checked Sep 19, 2026201-500690 contacts →

Indirect evidence

“From newborns to adults, Family Services, Inc.(FSI), a part of the Sheppard Pratt Health System, provides high-quality services to foster health and well-being in the home, school…”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 19, 20261,001-5,000679 contacts →

Indirect evidence

“Providing individuals and families with hope and support through life’s challenges.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 2,033 human service organizations based in the United States

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Human service organizations based in the United States at a glance

As of Sep 19, 2026
26.7%Verified-email coverage
71.2Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
708
11-50
530
51-200
390
201-500
209
501-1,000
109
1,001-5,000
72
5,001-10,000
2
10001+
8

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 2,033 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 human service 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 “human service 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 human service 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 human service 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, 38,592 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 19, 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.

Human service organizations by metro

  • Human service organizations in New York39

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 human service 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 human service organizations are there based in the United States?

RevenueBase identified 2,033 human service 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?

Casa DE LA Familia, headquartered in Santa Ana, tops this list with the largest team on record.

Which city has the most human service organizations?

New York leads with 39 headquartered companies, followed by Los Angeles (24) and Chicago (23).

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 38,592 verified decision-maker contacts tracked across these 2,033 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 19, 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.