100 leading Non-profit Organizations companies in California (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	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
3	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
4	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
5	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
6	PRIDE Industries prideindustries.com Delivering business excellence with a positive social impact by providing career opportunities and training for people with disabilities and other barriers to employment	Non-profit Organizations	🇺🇸 Roseville	2,195	1966
7	San Diego Zoo Wildlife Alliance sandiegozoowildlifealliance.org A nonprofit conservation leader inspiring passion for nature, working globally to conserve wildlife through innovation, partnerships, and education initiatives	Non-profit Organizations	🇺🇸 San Diego	2,038	1916
8	Textile Exchange textileexchange.org Promoting climate-positive practices in the global textile industry by focusing on sustainable material sourcing and environmental responsibility.	Non-profit Organizations	🇺🇸 Burbank	1,687	2002
9	Easterseals Southern California socal.easterseals.com The company provides essential services and supports for people with disabilities, including early childhood programs, autism services, and employment programs	Non-profit Organizations	🇺🇸 Irvine	1,656	1938
10	Public Health Institute phi.org A nonprofit organization dedicated to promoting health and well-being through research and innovations in public health on a national and international scale	Non-profit Organizations	🇺🇸 Oakland	1,646	1964
11	YMCA of San Diego County ymcasd.org The organization is committed to enhancing human life and empowering individuals to reach their full potential through holistic development	Non-profit Organizations	🇺🇸 San Diego	1,632	1882
12	New Horizons newhorizons-sfv.org Empowering individuals with disabilities to achieve their maximum potential through the services provided by New Horizons	Non-profit Organizations	🇺🇸 North Hills	1,619	1954
13	WORK dowork.org This company in Haiti helps families escape poverty by providing dignified jobs, focusing on holistic support and community empowerment	Non-profit Organizations	🇺🇸 Los Angeles	1,524	2010
14	Sierra Club sierraclub.org A company committed to environmental, racial, economic, and gender justice, advocating for a healthy climate, nature connection, and democracy	Non-profit Organizations	🇺🇸 Oakland	1,366	1892
15	Room to Read roomtoread.org A non-profit organization focused on promoting education by improving literacy, empowering girls, and providing support to children in low-income communities worldwide	Non-profit Organizations	🇺🇸 San Francisco	1,262	2000
16	The Primary School theprimaryschool.org Innovative school model supports children in underserved communities by engaging parents, educators, and healthcare providers from birth, integrating holistic care	Non-profit Organizations	🇺🇸 East Palo Alto	1,262	2015
17	Private School Village privateschoolvillage.org Empowering Black and Brown families in the private school system through community building, parent engagement, racial literacy, and policy change	Non-profit Organizations	🇺🇸 Los Angeles	1,202	2018
18	The Asia Foundation asiafoundation.org A nonprofit organization focused on improving lives in Asia through initiatives related to governance, women empowerment, economic opportunity, environmental resilience, and international cooperation	Non-profit Organizations	🇺🇸 San Francisco	1,153	1954
19	Goodwill Southern California goodwillsocal.org Providing education, training, work experience, and job placement services to individuals with disabilities, veterans, and youth while promoting sustainability through thrift stores	Non-profit Organizations	🇺🇸 Los Angeles	1,109	1916
20	Team Rubicon teamrubiconusa.org A veteran-led humanitarian organization providing aid to communities worldwide in times of disasters and crises	Non-profit Organizations	🇺🇸 Los Angeles	1,069	2010
21	HumanGood humangood.org A leading nonprofit provider of senior housing in California, serving over 13,000 residents in 122 life plan and affordable housing communities nationwide	Non-profit Organizations	🇺🇸 Duarte	1,064	n/a
22	Yohanna yohanna.org The company offers a platform for recruiters and job seekers to connect, with job listings and collaboration opportunities available	Non-profit Organizations	🇺🇸 Sunnyvale	994	n/a
23	Alliance College-Ready Public Schools laalliance.org Nonprofit charter school network in Los Angeles providing high-quality education to scholars from underprivileged communities, with high success rates in college acceptance	Non-profit Organizations	🇺🇸 Los Angeles	935	2004
24	Kesem kesem.org A national nonprofit providing free year-round programs for children with a parent's cancer through camps and support services, funded by donations	Non-profit Organizations	🇺🇸 Covina	870	2000
25	Eskaton discover.eskaton.org A regional nonprofit aging services provider in Northern California offering a comprehensive continuum of care, innovative programs, and a supportive work environment	Non-profit Organizations	🇺🇸 Carmichael	852	1968
26	Natural Resources naturalresources-sf.com Community nonprofit supporting new and expectant families with classes, essential products, and community-building services, including doula trainings and herbal products	Non-profit Organizations	🇺🇸 San Francisco	834	1988
27	YMCA of Greater San Francisco ymcasf.org The organization focuses on youth development, healthy living, and social responsibility by enriching lives through comprehensive programs and services	Non-profit Organizations	🇺🇸 San Francisco	830	1853
28	Academy of Motion Picture Arts and Sciences oscars.org Organization of accomplished cinema professionals recognizing excellence, inspiring creativity, and connecting global audiences through the art of motion pictures.	Non-profit Organizations	🇺🇸 Beverly Hills	808	1927
29	St. Anne's stannes.org A social-service agency in Los Angeles offering residential care, family education, mental health services, workforce development, and early childhood education	Non-profit Organizations	🇺🇸 Los Angeles	806	n/a
30	Tzu Chi USA tzuchi.us An international volunteer-based NGO providing humanitarian aid, disaster relief, medical assistance, education, and promoting humanistic values and community volunteerism	Non-profit Organizations	🇺🇸 San Dimas	805	1989
31	Community Research Foundation crfbehavioralhealthcare.org A San Diego-based non-profit corporation providing behavioral health services to adults, children, and families through outpatient programs, peer-run clubhouses, ACT programs, and more	Non-profit Organizations	🇺🇸 San Diego	786	1977
32	#CaliforniansForAll College Corps californiavolunteers.ca.gov Empowering College Corps Fellows in California with $10,000 stipends for work in K-12 education, climate action, and addressing food insecurity	Non-profit Organizations	🇺🇸 Sacramento	780	n/a
33	Wadhwani Foundation wadhwanifoundation.org A global non-profit founded in 2001 focused on accelerating job growth in emerging economies and enabling individuals to earn a sustainable income	Non-profit Organizations	🇺🇸 Los Altos	752	2001
34	Catalight catalight.org Dedicated to empowering individuals with developmental disabilities to choose their own paths by breaking down barriers and biases for a more equitable world	Non-profit Organizations	🇺🇸 Walnut Creek	734	n/a
35	Children's Institute childrensinstitute.org Support 30,000 children and families annually in emotional well-being, educational success, equity, and inclusion in underserved Los Angeles communities.	Non-profit Organizations	🇺🇸 Los Angeles	729	1906
36	The Salvation Army USA Western Territory salvationarmyusa.org An evangelical Christian organization providing social services and spiritual support to those in need, rooted in love and compassion	Non-profit Organizations	🇺🇸 Rancho Palos Verdes	724	n/a
37	SHPE shpe.org A non-profit organization advancing Hispanics in STEM through programming, resources, events, and the largest Hispanic STEM convention in the nation	Non-profit Organizations	🇺🇸 City of Industry	714	1974
38	Olive Crest - Strong Families, Safe Kids olivecrest.org An organization providing safe homes, counseling, and education to children and families in crisis, with a focus on strengthening family bonds	Non-profit Organizations	🇺🇸 Santa Ana	714	1973
39	We are Crazy (Crazy for Success Foundation)wearecrazy.org A global community uniting passionate individuals dedicated to achieving success, driven by their enthusiasm and dedication	Non-profit Organizations	🇺🇸 Beaumont	710	2019
40	TiE tie.org A global non-profit organization fostering entrepreneurship through mentoring, networking, and education, enabling members to exchange ideas and build partnerships	Non-profit Organizations	🇺🇸 Santa Clara	709	1992
41	Playworks playworks.org Promoting social and emotional skills through safe and fun play at schools, reaching over 700,000 students across 1,200 schools nationwide	Non-profit Organizations	🇺🇸 Oakland	700	1996
42	BUILD build.org Empowering under-resourced youth through entrepreneurship-based learning to prepare them for success in high school, college, and their careers	Non-profit Organizations	🇺🇸 Redwood City	678	1999
43	New Incentives newincentives.org An NGO in the US provides cash incentives to caregivers in Nigeria to vaccinate infants, aiming to increase vaccination rates and save lives	Non-profit Organizations	🇺🇸 Covina	674	2011
44	Volunteers of America Los Angeles voala.org A long-standing human service organization in Los Angeles uplifts individuals and communities through various educational, shelter, recovery, veteran, and youth empowerment programs	Non-profit Organizations	🇺🇸 Los Angeles	651	n/a
45	College Track collegetrack.org A college completion program supporting first-generation students from low-income communities to earn bachelor's degrees and achieve upward social mobility	Non-profit Organizations	🇺🇸 Oakland	649	1997
46	PATH epath.org Non-profit organization dedicated to ending homelessness by building affordable housing and providing supportive services in California since 1984	Non-profit Organizations	🇺🇸 Los Angeles	643	1984
47	Front Porch Communities & Services frontporch.net This organization provides quality human services to thousands of residents in senior living and affordable housing communities, fostering connection and fulfillment through innovation	Non-profit Organizations	🇺🇸 Glendale	629	n/a
48	The Trevor Project thetrevorproject.org The organization is dedicated to saving LGBTQ+ youth lives through suicide prevention, crisis intervention, social networking, education, research, and advocacy programs	Non-profit Organizations	🇺🇸 West Hollywood	623	1998
49	Urban Alchemy urban-alchemy.us An organization founded to bring peace and respect to chaotic urban areas, empowering former offenders through love and service for community transformation	Non-profit Organizations	🇺🇸 San Francisco	619	2018
50	JVS SoCal jvs-socal.org Empowering individuals through job training, mentoring, and education to achieve dignity, independence, and economic security, with a focus on sustainable impact	Non-profit Organizations	🇺🇸 Los Angeles	616	1931
51	Trust for Public Land tpl.org National nonprofit connecting communities to outdoor benefits by creating parks, protecting public land, and promoting equitable access, with significant impact since 1972	Non-profit Organizations	🇺🇸 San Francisco	601	1972
52	Abode abode.org This organization works to end homelessness by providing stable, supportive housing and advocating for the removal of its causes	Non-profit Organizations	🇺🇸 Fremont	592	1989
53	Los Angeles LGBT Center lalgbtcenter.org A prominent organization providing comprehensive programs and services for the LGBT community, dedicated to championing equality and celebrating LGBT individuals and families	Non-profit Organizations	🇺🇸 Los Angeles	592	1969
54	La Familia livelafamilia.org Non-profit organization dedicated to enhancing emotional wellness and supporting families in the Latino community through counseling services and community programs	Non-profit Organizations	🇺🇸 Hayward	583	1975
55	Hope Services hopeservices.org Organization providing high-quality services and employment opportunities for people with developmental disabilities, offering job training, counseling, community living, and sustainable social enterprises	Non-profit Organizations	🇺🇸 San Jose	580	1952
56	Jewish Family Service of Los Angeles jfsla.org A compassionate organization offering a wide range of services to support individuals and families in need, including food, shelter, counseling, and advocacy	Non-profit Organizations	🇺🇸 Los Angeles	578	1854
57	MidPen Housing Corporation midpen-housing.org Developing and managing affordable housing for low-income families, seniors, and individuals with special needs, offering onsite programs for resident advancement	Non-profit Organizations	🇺🇸 Foster City	577	1970
58	Inland Regional Center inlandrc.org Non-profit agency providing support and services for individuals with developmental disabilities in Riverside and San Bernardino counties since 1972	Non-profit Organizations	🇺🇸 San Bernardino	575	n/a
59	Hispanic Scholarship Fund HSF.net Empowering Latino families with resources for higher education through scholarships and support services, making college education a top priority nationwide	Non-profit Organizations	🇺🇸 California	565	1975
60	23andMe 23andme.com A genetics and research organization offering direct access to genetic information for understanding and benefiting from the human genome	Non-profit Organizations	🇺🇸 Palo Alto	549	n/a
61	YMCA of Silicon Valley ymcasv.org A leading nonprofit in Silicon Valley focused on youth development, healthy living, and social responsibility to strengthen the community	Non-profit Organizations	🇺🇸 San Jose	545	n/a
62	San Diego Humane Society sdhumane.org The company is dedicated to advancing animal welfare, providing shelter and care to thousands of animals, and inspiring compassion in the community	Non-profit Organizations	🇺🇸 San Diego	530	1880
63	Fresno Economic Opportunities Commission (Fresno EOC)fresnoeoc.org A nonprofit organization established in 1965, offering a wide range of human services and economic development programs to promote self-sufficiency	Non-profit Organizations	🇺🇸 Fresno	525	1965
64	Chan Zuckerberg Initiative chanzuckerberg.com A mission-driven organization collaborating with communities to address societal challenges, prioritize equity, and create a more inclusive and healthy future for all	Non-profit Organizations	🇺🇸 Redwood City	514	2015
65	AllegiantVets allegiantvets.org An organization supporting US Veterans through education, employment, and entrepreneurship, fostering community and purpose for veterans	Non-profit Organizations	🇺🇸 Rocklin	513	2010
66	StartupExperts startupexperts.us A community of HR, Finance, and Ops leaders who support each other, share knowledge, build relationships, and give back to others	Non-profit Organizations	🇺🇸 San Francisco Bay Area	512	2019
67	International LEAP Network leapacademy.com Private exclusive network for leaders, entrepreneurs, and high achievers, fostering self-improvement and connection among its global members.	Non-profit Organizations	🇺🇸 Los Altos	503	2020
68	Project Concern International globalcommunities.org Global development organization driving innovation to enhance health, end hunger, and overcome hardship for vulnerable populations worldwide through various sectoral focus areas	Non-profit Organizations	🇺🇸 San Diego	502	1961
69	All For Kids allforkids.org Nonprofit organization providing services for children in Southern California, soon to be rebranded as All For Kids in Summer 2024	Non-profit Organizations	🇺🇸 Los Angeles	502	1904
70	Heluna Health helunahealth.org National nonprofit optimizing population health through program and support services for researchers, consortia, government agencies, and community nonprofits to improve community well-being	Non-profit Organizations	🇺🇸 City of Industry	497	1968
71	Catholic Charities SF catholiccharitiessf.org Dedicated to serving the vulnerable with 35 programs in the Bay Area, providing holistic solutions and advocating for social justice	Non-profit Organizations	🇺🇸 San Francisco	496	1907
72	Canine Companions®canine.org National nonprofit organization that provides expertly trained service dogs to enhance the lives of people with disabilities at no cost	Non-profit Organizations	🇺🇸 Santa Rosa	493	1975
73	Social Vocational Services, Inc.socialvocationalservices.org The company offers training and support to help individuals achieve their social, recreational, vocational, and residential goals	Non-profit Organizations	🇺🇸 Torrance	488	1977
74	Turning Point of Central California, Inc.tpocc.org Provider of behavioral/mental health, substance use disorder, recovery, housing, and employment services across central California for clients of all ages	Non-profit Organizations	🇺🇸 Visalia	483	1970
75	Learn To Be learntobe.org Non-profit organization providing free online tutoring to underserved youth in the US, focusing on those experiencing homelessness, in foster care, or with low incomes	Non-profit Organizations	🇺🇸 Los Angeles	481	2008
76	Specialty Coffee Association sca.coffee Connecting diverse voices across the value chain, fostering innovation, and supporting the industry through research, standards, education, and events.	Non-profit Organizations	🇺🇸 Irvine	480	n/a
77	Village Enterprise villageenterprise.org Empowering women, youth, and refugees in rural Africa to start businesses, build resilience against climate change, and lift themselves out of extreme poverty	Non-profit Organizations	🇺🇸 San Carlos	478	1987
78	AYSO ayso.org National non-profit organization established in 1964, providing quality youth soccer programs emphasizing fun, family environment, and AYSO's Six Philosophies	Non-profit Organizations	🇺🇸 Torrance	477	1964
79	Second Harvest of Silicon Valley shfb.org Leading nonprofit food bank serving Silicon Valley, distributing groceries to 500,000+ monthly, connecting people to resources, and advocating for anti-hunger policies	Non-profit Organizations	🇺🇸 San Jose	473	1974
80	American Academy of Ophthalmology aao.org The world's largest association of eye physicians and surgeons setting standards, advocating for patients, and advancing ophthalmic education and care	Non-profit Organizations	🇺🇸 San Francisco	459	1896
81	Second Chance secondchanceprogram.org A non-profit organization focused on breaking the cycle of incarceration by empowering individuals with tools for self-sufficiency and addressing systemic inequities	Non-profit Organizations	🇺🇸 San Diego	457	1993
82	KFF kff.org A nonpartisan nonprofit organization providing policy analysis, journalism, and information on national health issues to policymakers, the media, and the public	Non-profit Organizations	🇺🇸 San Francisco	456	n/a
83	After-School All-Stars afterschoolallstars.org This organization offers free after-school programs to help children succeed academically and personally, promoting safety, academic support, enrichment, and community engagement	Non-profit Organizations	🇺🇸 Los Angeles	456	1992
84	Kidango kidango.org A non-profit organization providing preschool and early learning services to ensure all children have access to academic and social opportunities for future success	Non-profit Organizations	🇺🇸 Fremont	455	1979
85	ETR etr.org A multidisciplinary team dedicated to improving health and well-being through education, training, and program development focused on various health issues	Non-profit Organizations	🇺🇸 Watsonville	451	1981
86	Para Los Niños paralosninos.org A model founded in 1980 on Skid Row, fostering pathways to success through excellent education, powerful families, and strong communities for children and youth	Non-profit Organizations	🇺🇸 Los Angeles	449	1980
87	Associated Students UCLA asucla.ucla.edu A not-for-profit organization providing student services and activities at UCLA, including a large college store, food services, student government, and more	Non-profit Organizations	🇺🇸 Los Angeles	447	1919
88	PDS Health Foundation pdsfoundation.org The company's mission is to enhance overall health by focusing on oral health, providing services locally, nationally, and internationally	Non-profit Organizations	🇺🇸 Irvine	439	n/a
89	Cal Poly Associated Students, Inc asi.calpoly.edu Provides student programs, services, leadership opportunities, employment, and manages campus facilities to enhance student learning and college experience.	Non-profit Organizations	🇺🇸 San Luis Obispo	432	1964
90	The Surfrider Foundation surfrider.org A non-profit organization dedicated to protecting and preserving the world's oceans, waves, and beaches, with a global network of members and chapters	Non-profit Organizations	🇺🇸 San Clemente	420	1984
91	Homeboy Industries homeboyindustries.org Non-profit providing hope, training, and support to formerly gang-involved and incarcerated individuals in Los Angeles through job training and social enterprises	Non-profit Organizations	🇺🇸 Los Angeles	416	1988
92	Neighborhood House Association neighborhoodhouse.org A multi-purpose human services organization dedicated to improving the quality of life for underserved individuals and families in San Diego County	Non-profit Organizations	🇺🇸 San Diego	411	1914
93	Bay Area Community Services (BACS)bayareacs.org Breaking barriers in mental health, housing, and community support by offering comprehensive programs for individuals facing various challenges like substance use, trauma, and poverty	Non-profit Organizations	🇺🇸 Oakland	408	1953
94	Madera Community Hospital maderahospital.org A not-for-profit community health resource promoting and maintaining the well-being of residents in the Central Valley with compassion and safety	Non-profit Organizations	🇺🇸 Madera	402	1971
95	U.S.VETS usvets.org A nonprofit organization providing housing, mental health, career programs, and supportive services for veterans to successfully transition to civilian life	Non-profit Organizations	🇺🇸 Los Angeles	400	1993
96	Noora Health noorahealth.org This company focuses on supporting patients and caregivers in health systems to provide them with the tools and resources they need	Non-profit Organizations	🇺🇸 San Francisco	393	2014
97	PRC linktr.ee A San Francisco nonprofit focused on ending homelessness and improving quality of life through integrated legal, social, and health services	Non-profit Organizations	🇺🇸 San Francisco	393	1987
98	StartX web.startx.co A community of entrepreneurs and experts focused on collaboration and impact, providing support and resources without taking equity	Non-profit Organizations	🇺🇸 Palo Alto	390	2009
99	Community Action Partnership of Kern capk.org Provides food, education, utility aid, and social services to empower Kern County families and individuals toward self-sufficiency and well-being.	Non-profit Organizations	🇺🇸 Bakersfield	389	1965
100	HomeFirst homefirstscc.org A leading provider of services, shelter, and housing opportunities for the homeless in Santa Clara County, focused on eliminating barriers to housing and stability	Non-profit Organizations	🇺🇸 Milpitas	389	1980

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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 24, 2026.

100 leading Non-profit Organizations companies in California

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