The 100 largest Non-profit Organizations companies in the United States (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	CASA DE LA FAMILIA casadelafamilia.org A non-profit organization providing mental health services to children, youth, and families impacted by trauma in Southern California communities	Non-profit Organizations	🇺🇸 Santa Ana	65,434	1996
2	UNICEF unicef.org The organization works globally to support the most vulnerable children, saving lives, defending rights, and promoting overall well-being for all	Non-profit Organizations	🇺🇸 New York	48,886	1946
3	YMCA of the USA ymca.org National resource office supporting independent YMCAs across the US by providing leadership, guidance, and resources to strengthen communities and promote youth development, health, and well-being	Non-profit Organizations	🇺🇸 Chicago	46,444	1851
4	The Salvation Army salvationarmyusa.org A national organization providing social services, including food, shelter, rehabilitation, and spiritual enrichment, while preaching the gospel and meeting human needs without discrimination	Non-profit Organizations	🇺🇸 Alexandria	38,675	1865
5	American Red Cross redcross.org Mobilizing volunteers and donors to provide emergency relief, blood donations, and life-saving skills training for communities worldwide.	Non-profit Organizations	🇺🇸 Washington	33,900	n/a
6	The Y (YMCA)ymca.org We empower individuals regardless of age, income, or background to reach their full potential, improve well-being, and inspire action in communities	Non-profit Organizations	🇺🇸 Chicago	27,727	1844
7	Goodwill Industries International goodwill.org nonprofit organization providing education, training, and career services to disadvantaged individuals and people with disabilities for empowerment.	Non-profit Organizations	🇺🇸 Rockville	24,004	1902
8	Independent region7aaa.org The company manages funding and services for senior citizens and people with disabilities as part of a national network of Area Agencies on Aging	Non-profit Organizations	🇺🇸	23,035	n/a
9	TED Conferences ted.com Discovering and promoting powerful ideas globally to inspire change, shift perspectives, and create positive impact across communities and disciplines.	Non-profit Organizations	🇺🇸 New York	16,033	n/a
10	IEEE ieee.org Organization for advancing technological innovation and excellence for humanity. Inspires a global community through publications, conferences, standards, and educational activities.	Non-profit Organizations	🇺🇸 Piscataway	15,558	1884
11	International Rescue Committee rescue.org Delivering lifesaving care and assistance to refugees and displaced people in over 50 countries and 28 US cities to restore safety, dignity, and hope	Non-profit Organizations	🇺🇸 New York	13,458	1933
12	Boys & Girls Clubs of America bgca.org A leading nonprofit youth development organization supporting millions of kids and teens through programs, training, and services to help them reach their full potential	Non-profit Organizations	🇺🇸 Atlanta	11,507	1906
13	YPO ypo.org Global leadership community with 34,000 members in 150 countries, focused on developing better leaders through peer learning and exceptional experiences	Non-profit Organizations	🇺🇸 Irving	10,683	1950
14	CARE care.org A global humanitarian organization delivering lasting change to impoverished communities, with a focus on empowering women to lift families out of poverty	Non-profit Organizations	🇺🇸 Atlanta	10,627	1945
15	St. Jude Children's Research Hospital - ALSAC stjude.org Fundraising and awareness efforts supporting a children's research hospital focused on curing diseases and providing free family care.	Non-profit Organizations	🇺🇸 Memphis	10,579	n/a
16	Rotary International rotary.org Global network of leaders and volunteers uniting to create lasting positive change in communities worldwide through service and engagement.	Non-profit Organizations	🇺🇸 Evanston	8,787	n/a
17	Compassion International compassion.com Christian ministry partnering with local churches to provide holistic spiritual, social, economic, and physical support to children in poverty worldwide.	Non-profit Organizations	🇺🇸	7,982	1952
18	American Cancer Society cancer.org Leading organization focused on cancer advocacy, research, patient support, improving lives, and ensuring opportunities for prevention, detection, treatment, survival.	Non-profit Organizations	🇺🇸 Atlanta	7,962	1913
19	Catholic Relief Services crs.org An international humanitarian agency providing assistance to people in need in over 100 countries, with high efficiency and transparency	Non-profit Organizations	🇺🇸 Baltimore	7,845	1943
20	Toastmasters International toastmasters.org Global non-profit organization providing public speaking and leadership development through club meetings where members practice speeches, receive feedback, and lead diverse teams.	Non-profit Organizations	🇺🇸 Englewood	7,521	1924
21	The Nature Conservancy nature.org Protecting and conserving natural resources through science-based, community-driven efforts to ensure a sustainable future for all life.	Non-profit Organizations	🇺🇸 Arlington	7,441	1951
22	Mercy Corps mercycorps.org Providing lifesaving assistance, supporting local economies, empowering youth, and fostering community-driven solutions to overcome crises and build resilience.	Non-profit Organizations	🇺🇸 Portland	7,294	1979
23	AARP aarp.org A nonprofit organization disrupting stereotypes about aging, advocating for issues affecting people 50-plus, providing services and information for health, finance, and fulfillment	Non-profit Organizations	🇺🇸 Washington	6,616	1958
24	Jhpiego jhpiego.org Nonprofit organization improving healthcare access and quality in developing countries by training providers and strengthening health systems globally.	Non-profit Organizations	🇺🇸 Baltimore	5,632	1973
25	SEG seg.org A global society promoting collaboration and thought leadership in applied geophysics through education, professional development, and community engagement worldwide	Non-profit Organizations	🇺🇸 Houston	5,476	1930
26	Volunteers of America voa.org This organization provides support and services to a wide range of vulnerable groups in communities across the United States	Non-profit Organizations	🇺🇸 Alexandria	5,233	1896
27	International Medical Corps internationalmedicalcorps.org A global humanitarian organization dedicated to providing health care training, relief, and development programs to save lives and alleviate suffering worldwide	Non-profit Organizations	🇺🇸 Los Angeles	5,105	1984
28	Lions Clubs International lionsclubs.org Provide vision and health screenings, build parks, support eye hospitals, award scholarships, assist youth, and aid disaster relief worldwide.	Non-profit Organizations	🇺🇸 Oak Brook	4,994	1917
29	SEO (Sponsors for Educational Opportunity)seo-usa.org The company provides academic and career support programs for underserved youth, helping them access college, internships, and jobs in various sectors	Non-profit Organizations	🇺🇸 New York	4,709	1963
30	Crisis Text Line crisistextline.org A nonprofit organization providing free 24/7 text-based mental health support and crisis intervention in English and Spanish, with trained volunteers	Non-profit Organizations	🇺🇸 New York	4,689	2016
31	Habitat for Humanity International habitat.org Global movement building safe, affordable homes and vibrant communities through construction, repair, financing, and housing policy advocacy.	Non-profit Organizations	🇺🇸 Atlanta	4,625	1976
32	Child Advocates San Antonio (CASA)casa-satx.org The organization recruits, trains, and supervises volunteer Advocates who provide support and advocacy for abused and neglected children in need of safe and permanent homes	Non-profit Organizations	🇺🇸 San Antonio	4,542	1984
33	One Acre Fund oneacrefund.org Providing smallholder farmers with tools, knowledge, and innovations to increase productivity, resilience, and income across Africa.	Non-profit Organizations	🇺🇸	4,519	2006
34	edc.org edc.org A global nonprofit focused on improving education, promoting health, and expanding economic opportunity through innovative programs in over 80 countries	Non-profit Organizations	🇺🇸 Waltham	4,310	1958
35	Goodwill of Central and Northern Arizona goodwillaz.org A leading nonprofit organization in Arizona providing job training, employment programs, and retail thrift stores to support individuals in need	Non-profit Organizations	🇺🇸 Phoenix	4,202	1947
36	Samaritan's Purse samaritanspurse.org An evangelical Christian organization providing spiritual and physical aid to those in need worldwide through emergency relief, community development, and medical projects	Non-profit Organizations	🇺🇸 Boone	4,201	1970
37	Alpha Phi International Fraternity alphaphi.org A sisterhood of women founded in 1872 at Syracuse University, promoting excellence through collegiate and alumnae chapters in the US and Canada	Non-profit Organizations	🇺🇸 Denver	4,173	1872
38	Gates Foundation gatesfoundation.org Focus on improving health, reducing hunger and poverty in developing countries, and expanding educational opportunities in the United States.	Non-profit Organizations	🇺🇸 Seattle	4,160	2000
39	Wildlife Conservation Society wcs.org Global wildlife conservation organization protecting wilderness, oceans, and wildlife through science, on-the-ground conservation efforts, education, and partnerships in 60 countries	Non-profit Organizations	🇺🇸 Bronx	4,131	1895
40	Entrepreneurs' Organization eonetwork.org A global support network for entrepreneurs, fostering growth and personal development through connections, experiences, and learning opportunities across 61 countries	Non-profit Organizations	🇺🇸 Alexandria	4,078	1987
41	American Psychological Association apa.org A leading organization representing psychology professionals in the US, advocating for the advancement of psychological knowledge to improve society	Non-profit Organizations	🇺🇸 Washington	4,073	1892
42	Year Up United yearup.org Provides young adults from diverse backgrounds with training and opportunities to access meaningful careers, addressing workforce talent gaps and economic inequity.	Non-profit Organizations	🇺🇸 Boston	3,976	2000
43	Self Enhancement, Inc.selfenhancement.org A comprehensive resource providing academic support and services for African American youth and families, helping them overcome barriers and reach their full potential	Non-profit Organizations	🇺🇸 Portland	3,927	1981
44	Kappa Kappa Gamma kappakappagamma.org A women's organization supporting members with programs, leadership opportunities, and loyal sisterhood to bridge the gap from dreams to reality	Non-profit Organizations	🇺🇸 Dublin	3,888	n/a
45	Pi Beta Phi Fraternity for Women pibetaphi.org An organization established in 1867, empowering women through a fraternity, foundation, and housing corporation, with over 300,000 members	Non-profit Organizations	🇺🇸 Town and Country	3,846	1867
46	TE data A leading internet service provider in Egypt and Jordan, offering a wide range of communication services, data center hosting, and global partnerships	Non-profit Organizations	🇺🇸 6th of October	3,824	2001
47	Rotaract rotary.org A global community of young adults aged 18-30 coming together to exchange ideas, plan activities, and take action for positive change	Non-profit Organizations	🇺🇸 Evanston	3,674	1968
48	JASA jasa.org A non-profit organization in New York dedicated to helping older adults live safely in their own homes and communities	Non-profit Organizations	🇺🇸 New York	3,617	1968
49	Sanctuary sanctuary.co.uk A not-for-profit housing association providing affordable homes and care in England and Scotland, aiming to build sustainable communities	Non-profit Organizations	🇺🇸 Worcester	3,510	1969
50	Alpha Chi Omega Fraternity, Inc.alphachiomega.org An organization for women promoting leadership, sisterhood, and philanthropy through various entities dedicated to empowering strong, impactful women	Non-profit Organizations	🇺🇸 Indianapolis	3,504	n/a
51	Civil Air Patrol gocivilairpatrol.com An auxiliary of the US Air Force, this organization conducts search and rescue operations, disaster relief, and aerospace education programs	Non-profit Organizations	🇺🇸 Maxwell AFB	3,409	1941
52	GIA (Gemological Institute of America)gia.edu A nonprofit committed to research, education, and innovation in the gem industry, ensuring public trust and promoting sustainability	Non-profit Organizations	🇺🇸 Carlsbad	3,399	1931
53	Special Olympics specialolympics.org Organisation dedicated to providing year-round sports training and competition for individuals with intellectual disabilities, promoting physical fitness, courage, joy, and community inclusion	Non-profit Organizations	🇺🇸 Washington	3,390	n/a
54	Catholic Charities USA catholiccharitiesusa.org This organization provides support to Catholic Charities agencies across the country to help those in need and promote social justice	Non-profit Organizations	🇺🇸 Alexandria	3,371	1910
55	Kappa Delta Sorority kappadelta.org A sorority providing opportunities and experiences to build confidence and inspire action, encouraging engagement through LinkedIn group conversations	Non-profit Organizations	🇺🇸 Memphis	3,305	1897
56	ASME (The American Society of Mechanical Engineers)asme.org Leading international organization enabling engineers to collaborate, share knowledge, and develop skills to address real-world challenges and promote engineering's vital role in society	Non-profit Organizations	🇺🇸 New York	3,274	1880
57	JSI jsi.org Support underserved communities worldwide through health management consulting, research, training, and capacity building for effective public health solutions.	Non-profit Organizations	🇺🇸 Boston	3,272	1978
58	Alpha Delta Pi Sorority alphadeltapi.org An organization promoting sisterhood, values, academic excellence, and social responsibility for over 260,000 women in collegiate chapters and alumnae associations	Non-profit Organizations	🇺🇸 Atlanta	3,143	1851
59	CNC cnc.org Non-profit organization providing human services like education, early childhood development, employment counseling, and housing assistance to individuals in need	Non-profit Organizations	🇺🇸 Miami	3,088	1972
60	Alpha Kappa Psi akpsi.org The company offers educational, networking, and professional development opportunities for college students and graduates interested in business leadership	Non-profit Organizations	🇺🇸 Noblesville	3,087	1904
61	United Way unitedway.org Mobilizing communities worldwide to address local challenges, improve health, youth opportunities, financial security, and strengthen resilience for thriving lives.	Non-profit Organizations	🇺🇸 Alexandria	3,044	n/a
62	NAMI nami.org Leading grassroots mental health organization advocating for access to services, treatment, and research, while supporting and raising awareness for those affected by mental illness	Non-profit Organizations	🇺🇸 Arlington	3,007	1979
63	Optica optica.org A global organization promoting knowledge in optics and photonics through publications, meetings, resources, and activities to accelerate scientific and educational achievements	Non-profit Organizations	🇺🇸 Washington	2,984	1916
64	JCI (Junior Chamber International)jci.cc Empowering young people worldwide through projects, events, training, and programs to develop leadership and community impact skills.	Non-profit Organizations	🇺🇸 Chesterfield	2,970	1915
65	Future Business Leaders of America, Inc. (FBLA)fbla.org A global student organization offering leadership development, academic competitions, educational programs, membership benefits, community service, and awards in business-related fields	Non-profit Organizations	🇺🇸 Reston	2,949	1942
66	Alzheimer's Association®alz.org Leading organization advancing Alzheimer's research, providing care and support for affected individuals, promoting brain health, and aiming to eliminate dementia.	Non-profit Organizations	🇺🇸 Chicago	2,940	n/a
67	City Year linktr.ee Organization supporting students and schools with diverse teams of AmeriCorps members, improving academic outcomes and fostering civic engagement in communities nationwide and internationally	Non-profit Organizations	🇺🇸 Boston	2,920	1988
68	Merakey merakey.org A non-profit provider offering integrated developmental, behavioral health, and education services nationwide, focusing on innovative care solutions for individuals and communities	Non-profit Organizations	🇺🇸 Lafayette Hill	2,901	1969
69	Generation generation.org The company is dedicated to preparing, placing, and supporting individuals in life-changing careers while advocating for increased opportunities for everyone	Non-profit Organizations	🇺🇸 Washington	2,885	n/a
70	Tri Delta tridelta.org Established in 1888, this premier women's organization focuses on service, personal growth, and leadership development for women worldwide Benefits include competitive pay and comprehensive health options	Non-profit Organizations	🇺🇸 Dallas	2,880	1888
71	RAND rand.org nonprofit organization providing unbiased research and analysis to support evidence-based policymaking and improve decisionmaking for leaders	Non-profit Organizations	🇺🇸 Santa Monica	2,839	1946
72	American Chemical Society acs.org Professional organization supporting chemists worldwide through publications, conferences, education, research grants, and advocacy for chemistry's societal impact.	Non-profit Organizations	🇺🇸 Washington	2,797	1876
73	Child Care Services Association earlyyearsnc.org The organization provides free child care referrals, financial assistance, professional development, nutritious meals, scholarships, and research to support accessible early childhood education	Non-profit Organizations	🇺🇸 Chapel Hill	2,777	1974
74	ActionAid actionaid.org Support vulnerable communities worldwide to secure rights to food, shelter, work, healthcare, and participation in decisions affecting their lives.	Non-profit Organizations	🇺🇸	2,723	1972
75	HOSA-Future Health Professionals hosa.org An international student organization promoting health care career opportunities and improving the quality of health care for all people	Non-profit Organizations	🇺🇸 Southlake	2,723	1976
76	ColorStack colorstack.org Dedicated to boosting Black and Latinx representation in tech by empowering graduates to pursue successful careers in computer science	Non-profit Organizations	🇺🇸 Freeport	2,714	2020
77	TLC nctlc.org Empowering individuals of all abilities since 1969, offering a diverse range of programs for children, adults, and families in on-site and community settings	Non-profit Organizations	🇺🇸 Raleigh	2,689	1969
78	Gamma Phi Beta International Sorority gammaphibeta.org A women's sorority offering lifetime leadership and educational opportunities, fostering sisterhood, and supporting the development of women through philanthropy	Non-profit Organizations	🇺🇸 Centennial	2,685	1874
79	American Marketing Association ama.org Provides marketing and sales professionals with industry insights, professional certification, academic journals, training, and conferences through a global community.	Non-profit Organizations	🇺🇸 Chicago	2,669	1937
80	Management Leadership for Tomorrow mlt.org Non-profit organization accelerating diverse talent pipelines through coaching, networking, and equity certifications, connecting top minority talent with leading corporations and business schools	Non-profit Organizations	🇺🇸 Bethesda	2,663	2002
81	Enactus enactus.org It is an international non-profit organization focused on empowering students through entrepreneurial action to create a sustainable and inclusive world.	Non-profit Organizations	🇺🇸 Global	2,659	1975
82	TechnoServe technoserve.org A nonprofit organization empowering people in the developing world to build competitive farms, businesses, and industries to alleviate poverty	Non-profit Organizations	🇺🇸 Arlington	2,599	1968
83	FIRST firstinspires.org A non-profit organization founded to inspire young people in STEM fields through innovative programs, mentorship, and skill-building opportunities worldwide	Non-profit Organizations	🇺🇸 Manchester	2,568	1989
84	VluchtelingenWerk Nederland vluchtelingenwerk.nl Aiding refugees in building new lives in the Netherlands, with 11,000 volunteers supporting their protection, integration, and advocacy for rights	Non-profit Organizations	🇺🇸 Amsterdam	2,562	1979
85	United Cerebral Palsy linktr.ee Providing support and resources for individuals with cerebral palsy and other disabilities, aiming for a life of inclusion in communities	Non-profit Organizations	🇺🇸 Vienna	2,561	1949
86	Habitat for Humanity charlottecountyhfh.org Bringing people together to build homes, communities, and hope by putting God's love into action	Non-profit Organizations	🇺🇸 Punta Gorda	2,557	n/a
87	American Nurses Association nursingworld.org Advocating for 5 million registered nurses, promoting high standards in nursing practice, advancing healthcare quality, and supporting nurses' health and wellness	Non-profit Organizations	🇺🇸 Silver Spring	2,528	n/a
88	Big Brothers Big Sisters of America bebignow.org This company strives to create and support mentoring relationships to empower youth by building confidence, relationships, and educational success	Non-profit Organizations	🇺🇸 Tampa	2,515	1904
89	American Medical Association ama-assn.org Providing essential resources and advocacy to support physicians, residents, and medical students throughout their medical careers and improve public health.	Non-profit Organizations	🇺🇸 Chicago	2,513	1847
90	Ronald McDonald House rmhc.org Provide housing and support services to families with ill or injured children, ensuring proximity to medical care and emotional assistance.	Non-profit Organizations	🇺🇸 Chicago	2,505	1974
91	The American Legion legion.org Patriotic veterans service organization providing community service and mutual support for 2 million members worldwide through 13,000 Legion posts	Non-profit Organizations	🇺🇸 Indianapolis	2,483	1919
92	Rewriting the Code rewritingthecode.org Global community supporting women in technology with education, mentorship, scholarships, resources, and events for career readiness.	Non-profit Organizations	🇺🇸 Durham	2,399	2016
93	Community Options, Inc.comop.org A national nonprofit organization creating housing and employment opportunities for individuals with developmental disabilities, promoting community inclusion and independence	Non-profit Organizations	🇺🇸 Princeton	2,394	1989
94	NMDP nmdp.org A global non-profit leader in cell therapy, connecting researchers, donors, and clinicians to save lives by finding cures for blood cancers and disorders	Non-profit Organizations	🇺🇸 Minneapolis	2,382	1987
95	DAV (Disabled American Veterans)dav.org A nonprofit organization supporting veterans and their families by providing access to benefits, employment opportunities, and career fairs nationwide	Non-profit Organizations	🇺🇸 Erlanger	2,380	1920
96	AHRC New York City ahrcnyc.org Advocating for equity and social justice, supporting individuals with intellectual and developmental disabilities to lead full and equitable lives in NYC	Non-profit Organizations	🇺🇸 New York	2,369	1949
97	Population Services International psi.org A network of organizations working to achieve consumer-powered healthcare by prioritizing people's voice and choice, developing innovative solutions for global health challenges	Non-profit Organizations	🇺🇸 Washington	2,351	1970
98	ICAP at Columbia University icap.columbia.edu A global leader in HIV and health systems strengthening, providing technical assistance and support to governments and organizations in nearly 50 countries	Non-profit Organizations	🇺🇸 New York	2,304	2003
99	International Coaching Federation coachingfederation.org Global organization setting high standards, providing certification, and building a network for trained coaching professionals to empower the world through coaching	Non-profit Organizations	🇺🇸 Lexington	2,303	1995
100	National Notary Association nationalnotary.org The National Notary Association educates, serves, and advocates for 48 million Notaries, promoting best practices and advancing professionalism and ethics	Non-profit Organizations	🇺🇸 Chatsworth	2,279	1957

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.

The 100 largest Non-profit Organizations companies in the United States

Turn this list into pipeline

How this list is built

More company lists in the United States

The same list elsewhere in United States