Data / Nonprofits / California / Castro Valley
Nonprofits in Castro Valley, CA: 338 registered with the IRS
338 nonprofits are registered with the IRS in Castro Valley, CA, 295 of them 501(c)(3) charities; the 98 that report revenue took in $117.4 million. The largest by revenue: Baywood Court ($28 million), Rubys Place ($18.2 million), Redwood Christian Schools ($14.2 million). Most common causes: religion-related (42), education (32), recreation and sports (21).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Baywood Court | Housing and shelter | 501(c)(3) | 1985 | $28 million | $48.7 million | 2025-06 |
| Rubys Place | Housing and shelter | 501(c)(3) | 1974 | $18.2 million | $11 million | 2025-06 |
| Redwood Christian Schools | Education | 501(c)(3) | 1970 | $14.2 million | $13.4 million | 2026-06 |
| George Mark Childrens Fund | Health care | 501(c)(3) | 1997 | $8.6 million | $19 million | 2025-06 |
| St John Kronstadt Home for Aged Russian Americans | Health care | 501(c)(3) | 1973 | $6.7 million | $7.1 million | 2025-12 |
| Electrochemistry Foundry Inc | Science and technology | 501(c)(3) | 2025 | $5.7 million | $9.6 million | 2025-12 |
| Play CV | Education | 501(c)(3) | 2021 | $5.3 million | $2.8 million | 2025-06 |
| Regional Parks Foundation | 501(c)(3) | 1969 | $3.8 million | $26.9 million | 2025-12 | |
| Fern Lodge Inc | Housing and shelter | 501(c)(3) | 1972 | $3.6 million | $4.6 million | 2024-12 |
| 360serve | International, foreign affairs and national security | 501(c)(3) | 2012 | $2.1 million | $757,836 | 2025-12 |
| Won Buddhism San Francisco Temple | 501(c)(3) | 1992 | $1.8 million | $2.9 million | 2024-12 | |
| Montessori Discovery of the Child Foundation Inc | 501(c)(3) | 1993 | $1.7 million | $5.8 million | 2025-08 | |
| Eden Counseling Services Inc | Crime and legal-related | 501(c)(3) | 2000 | $1.5 million | $955,463 | 2025-06 |
| Tule Lake Committee Inc | 501(c)(3) | 1981 | $1.4 million | $1.5 million | 2024-12 | |
| Mental Health Association for Chinese Communities | Mental health and crisis intervention | 501(c)(3) | 2018 | $1.3 million | $538,480 | 2025-12 |
| Healthcare Charities Inc | International, foreign affairs and national security | 501(c)(3) | 1996 | $1.2 million | $1.9 million | 2025-03 |
| Castro Valley Soccer Club | 501(c)(3) | 1989 | $1.2 million | $637,222 | 2025-12 | |
| Pilgrim Baptist Church of San Mateo | 501(c)(3) | 1955 | $1.1 million | $8.5 million | 2024-12 | |
| Our Safehaven Inc | Human services | 501(c)(3) | 2005 | $738,522 | $92,808 | 2025-12 |
| Won Buddhism Meditation Temple Ofberkeley | Religion-related | 501(c)(3) | 2007 | $655,638 | $1 million | 2023-12 |
| Sri Sai Temple Inc | Religion-related | 501(c)(3) | 2014 | $538,168 | $3.4 million | 2024-12 |
| Castro Valley Chamber of Commerce Inc | 501(c)(6) | 1983 | $486,617 | $512,522 | 2025-12 | |
| Hayward-Castro Valley Lodge No 1491 | 501(c)(8) | 1940 | $429,207 | $1.1 million | 2026-04 | |
| Parent Booster USA Inc | Education | 501(c)(3) | 2005 | $426,046 | $141,362 | 2025-06 |
| Chabot Swim Club | 501(c)(7) | 1963 | $327,212 | $861,857 | 2025-10 | |
| Eden Medical Staff | Health care | 501(c)(6) | 2019 | $289,324 | $435,770 | 2024-12 |
| Center for the Dance Theatre Co | Arts, culture and humanities | 501(c)(3) | 2006 | $277,593 | $71,454 | 2025-12 |
| School Personnel Commissioners Association of Northern California | Community improvement and capacity building | 501(c)(6) | 2022 | $263,101 | $191,155 | 2025-06 |
| East Bay Bat Rays Swimming Association | Recreation and sports | 501(c)(3) | 2004 | $248,877 | $92,800 | 2025-08 |
| Castro Valley Arts Foundation | 501(c)(3) | 2005 | $234,729 | $5.6 million | 2025-06 | |
| California Pacific Conference | Recreation and sports | 501(c)(3) | 1998 | $221,335 | $216,904 | 2025-06 |
| Southbay Youth Maritime Foundation | Youth development | 501(c)(3) | 2019 | $218,004 | $371,335 | 2025-08 |
| Free & Accepted Masons of California | 501(c)(10) | 1940 | $213,300 | $3.3 million | 2024-12 | |
| Little League Baseball Inc | Recreation and sports | 501(c)(3) | 1967 | $199,979 | $109,646 | 2025-09 |
| Castro Valley Educational Foundation | 501(c)(3) | 1982 | $190,637 | $1.6 million | 2025-06 | |
| Forest Hills Swimming Club Inc | 501(c)(7) | 1983 | $190,470 | $158,588 | 2025-12 | |
| Oscar Grant Foundation | Education | 501(c)(3) | 2016 | $183,134 | $182,970 | 2025-12 |
| Euro-Christian Partners | Religion-related | 501(c)(3) | 2004 | $177,606 | $56,882 | 2025-12 |
| The Sequoians | Recreation and sports | 501(c)(7) | 2017 | $170,867 | $288,244 | 2024-12 |
| Castro Valley Parent Nursery School Inc | 501(c)(3) | 1958 | $155,777 | $349,727 | 2026-06 | |
| Retired Oakland Police Officers Association | Public safety, disaster preparedness and relief | 501(c)(4) | 2014 | $142,222 | $1 million | 2025-12 |
| Castro Valley Girls Softball League | 501(c)(3) | 1984 | $135,083 | $110,349 | 2025-12 | |
| Ascension of the Lord Romanian Orthodox Church | Religion-related | 501(c)(3) | 2009 | $131,584 | $30,189 | 2025-12 |
| Hidden People Ministries | Religion-related | 501(c)(3) | 2002 | $129,571 | $233,998 | 2025-06 |
| Forestr Org | Environment | 501(c)(3) | 2020 | $126,454 | $82,136 | 2025-12 |
| Follow Up Ministries Inc | Crime and legal-related | 501(c)(3) | 1959 | $122,545 | $388,618 | 2023-12 |
| Castro Valley Masonic Temple Association | Mutual and membership benefit | 501(c)(2) | 1961 | $117,401 | $116,255 | 2024-12 |
| Pta California Congress of Parents Teachers & Students Inc | 501(c)(3) | 1943 | $110,402 | $69,704 | 2025-06 | |
| Independent Elementary Pto | Education | 501(c)(3) | 2023 | $104,796 | $61,171 | 2025-06 |
| Rowell Ranch Rodeo Inc | Arts, culture and humanities | 501(c)(3) | 1978 | $103,811 | $608,486 | 2024-07 |
| Peace and Cross Cultural Education Foundation | International, foreign affairs and national security | 501(c)(3) | 2013 | $102,773 | $597,572 | 2025-12 |
| Plethos Productions | Arts, culture and humanities | 501(c)(3) | 2019 | $102,475 | $8,464 | 2024-12 |
| Norcal Lawmen Football Organization | Recreation and sports | 501(c)(3) | 2007 | $98,805 | $14,835 | 2025-12 |
| West Alameda County Conference | Youth development | 501(c)(3) | 2021 | $96,394 | $21,527 | 2025-07 |
| Friends of the Castro Valley Library | 501(c)(3) | 1999 | $91,700 | $430,503 | 2025-09 | |
| Laca Foundation | International, foreign affairs and national security | 501(c)(3) | 1992 | $89,009 | $377,093 | 2025-12 |
| California Rescue Dog Association | Public safety, disaster preparedness and relief | 501(c)(3) | 1978 | $86,403 | $263,522 | 2025-06 |
| Rhythmic Pathways | Arts, culture and humanities | 501(c)(3) | 2022 | $86,230 | $41,044 | 2024-12 |
| Homecoming Global | 501(c)(3) | 2021 | $84,362 | $34,373 | 2025-12 | |
| Rotary International | 501(c)(4) | 1954 | $82,350 | $44,001 | 2025-06 | |
| Castro Valley History Museum | Arts, culture and humanities | 501(c)(3) | 2025 | $80,325 | $74,943 | 2025-12 |
| Les Dames Descoffier Internationalsan Francisco Chapter | Education | 501(c)(3) | 2014 | $75,332 | $95,132 | 2025-12 |
| Bay Area Freedom Collective | Crime and legal-related | 501(c)(3) | 2022 | $71,132 | $131,562 | 2024-12 |
| Agua Linda Swimming Pool Corp | 501(c)(7) | 1958 | $68,549 | $31,501 | 2024-12 | |
| Vannoy Parent Club | Education | 501(c)(3) | 1994 | $68,008 | $180,620 | 2025-07 |
| Pta California Congress of Parents Teachers & Students Inc | 501(c)(3) | 1943 | $67,918 | $48,387 | 2025-06 | |
| Chabot School Parents Club | Education | 501(c)(3) | 1984 | $66,578 | $190,736 | 2025-06 |
| Sikh Sevak Society | Religion-related | 501(c)(3) | 2014 | $59,264 | $149,443 | 2024-12 |
| Sweet Briar Camp | Public and societal benefit | 501(c)(12) | 2025 | $57,525 | $550,048 | 2025-12 |
| Castro Valley Athletic Boosters | Education | 501(c)(3) | 2010 | $56,501 | $29,080 | 2026-06 |
| Extreme Baseball | Recreation and sports | 501(c)(3) | 2021 | $52,655 | $25,171 | 2025-12 |
| Missions of Compassion | Religion-related | 501(c)(3) | 2004 | $51,054 | $53,854 | 2025-12 |
| Pta California Congress of Parents Teachers & Students Inc | 501(c)(3) | 1943 | $49,528 | $60,845 | 2025-06 | |
| Bay Area Bankruptcy Forum | 501(c)(6) | 1994 | $48,283 | $47,663 | 2025-12 | |
| 3 M Track Club | 501(c)(3) | 1987 | $47,368 | $1 | 2025-12 | |
| Pta California Congress of Parents Teachers & Students Inc | 501(c)(3) | 1967 | $47,238 | $30,134 | 2025-06 | |
| Stanton Parent Association | Education | 501(c)(3) | 2023 | $46,836 | $74,985 | 2026-06 |
| Care Beyond Our Walls | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $45,005 | $43,030 | 2025-06 |
| Cve Pata | Education | 501(c)(3) | 2014 | $41,717 | $44,607 | 2024-06 |
| Rob Warren Leadership Foundation | Education | 501(c)(3) | 2023 | $33,000 | $34,627 | 2025-12 |
| California Houndsmen for Conservation | Recreation and sports | 501(c)(4) | 2012 | $32,811 | $29,435 | 2025-12 |
| Foothill Sportsmens Club Inc | 501(c)(7) | 1961 | $30,419 | $159,054 | 2026-06 | |
| Creekside Parent Teacher Club | Education | 501(c)(3) | 1999 | $26,076 | $27,283 | 2025-06 |
| Native Sons of the Golden West | 501(c)(8) | 1940 | $20,252 | $927,091 | 2025-12 | |
| Chanticleers | Arts, culture and humanities | 501(c)(3) | 1990 | $20,172 | $49,040 | 2024-12 |
| Castro Valley Sports Foundation Inc | Education | 501(c)(3) | 2003 | $19,781 | $70,204 | 2026-01 |
| Creekside Boosters Club | Recreation and sports | 501(c)(3) | 2015 | $16,259 | $37,182 | 2025-06 |
| International Order of the Rainbow Girls | 501(c)(3) | 1972 | $12,859 | $14,418 | 2024-12 | |
| Eden Garden Club | 501(c)(3) | 1987 | $9,246 | $20,971 | 2024-06 | |
| Asphalt Sealcoat Manufacturers Association | 501(c)(6) | 1995 | $8,085 | $6,569 | 2024-12 | |
| Protect Your Record Project Inc | Education | 501(c)(3) | 2019 | $7,514 | $9,440 | 2025-12 |
| Level Up Foundation | Human services | 501(c)(3) | 2023 | $6,325 | $5,837 | 2024-12 |
| Hands 4 Humanity Inc | International, foreign affairs and national security | 501(c)(3) | 2007 | $5,200 | $1 | 2025-07 |
| California Dental Hygienists Association | 501(c)(6) | 1997 | $2,306 | $13,378 | 2024-12 | |
| Rotary Club of Castro Valley Endowment | Community improvement and capacity building | 501(c)(3) | 1993 | $2,043 | $319,722 | 2025-06 |
| United States-China Exchange Council | International, foreign affairs and national security | 501(c)(3) | 2004 | $1,242 | $132,821 | 2025-12 |
| Eden Hospital Auxiliary Inc | 501(c)(3) | 1972 | $295 | $3,400 | 2026-02 | |
| Yellow Home Sanctuary Inc | Animal-related | 501(c)(3) | 2026 | $50 | $50 | 2025-12 |
| 4C Christ Centered Community Church | Religion-related | 501(c)(3) | 2017 | |||
| 82D Airborne Division Association Inc | 501(c)(4) | 2006 | ||||
| A Greenvision Foundation | Environment | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Abraham Haile Foundation NFP | Religion-related | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Absolute Veterans Assistance Inc | Public and societal benefit | 501(c)(3) | 2025 | |||
| Action Christian Center of the Assemlblies of God | Religion-related | 501(c)(3) | 1964 | |||
| Ai for Mankind Corp | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Alacosta Moose Legion No 70 | 501(c)(8) | 1940 | $0 | $0 | 2026-04 | |
| Alameda County Sherrifs Air Squadron | Crime and legal-related | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Alpha Chi Omega Fraternity Inc | 501(c)(7) | $0 | $0 | 2026-07 | ||
| Alpha Delta Kappa Sorority Inc | 501(c)(7) | 1970 | $0 | $0 | 2026-05 | |
| Amazing Grace Bible Church | Religion-related | 501(c)(3) | 2025 | |||
| American College of Dentists | 501(c)(6) | 1985 | $0 | $0 | 2024-12 | |
| American College of Dentists Nor Cal | Health care | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| American Unity Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Angus & Friends Inc | Animal-related | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Aqua Tutus Diving Inc | Environment | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Arcadians of Oakland - Skopi | Arts, culture and humanities | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Arethree Corp Dba Riley Recovery Ce Nters Foundation | Mental health and crisis intervention | 501(c)(3) | 2026 | |||
| Armonia Cristiana Internacional Inc | Religion-related | 501(c)(3) | 2016 | |||
| Art Bridge of Cultures | Arts, culture and humanities | 501(c)(3) | 2024 | $0 | $0 | 2025-07 |
| Art Inc | Arts, culture and humanities | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| As in Heaven Church | Religion-related | 501(c)(3) | 1995 | |||
| Baisaa Inc | Mental health and crisis intervention | 501(c)(3) | 2019 | $0 | $0 | 2025-06 |
| Bay Area Affordable Housing Service Center | Human services | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Bay Area Eritreans for Democratic Change | Civil rights, social action and advocacy | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Bay Area Korean Community Service Center | Religion-related | 501(c)(3) | 2001 | |||
| Bay Area Mustang Association | 501(c)(7) | 1993 | $0 | $0 | 2025-10 | |
| Bay Area Sportsmen - Banquet & Cont Est | Recreation and sports | 501(c)(3) | 2026 | |||
| Benevolence Fund for Christian Science Nursing Care | Health care | 501(c)(3) | 2012 | $0 | $0 | 2023-12 |
| Beyond Books SPC | Education | 501(c)(3) | 2025 | |||
| Beyond the Ring | Youth development | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Bhan S Pannu Charitable Foundation | 501(c)(3) | 2021 | $80,558 | 2025-12 | ||
| CV Educations | Education | 501(c)(3) | 2024 | $0 | $0 | 2025-07 |
| CVHS Trojan Brigade Boosters | Arts, culture and humanities | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Caldreams Inc | Education | 501(c)(3) | 2025 | |||
| California Recovery Divers | Public safety, disaster preparedness and relief | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| California Retired Teachers Association | 501(c)(4) | 1972 | $0 | $0 | 2025-06 | |
| Calvary Community Christain Center of the Assemblies of God | 501(c)(3) | 1964 | ||||
| Caresprint | Civil rights, social action and advocacy | 501(c)(3) | 2023 | $1 | 2024-12 | |
| Carrie Lee Taylor Foudation | Human services | 501(c)(3) | 2026 | |||
| Casa de Liberacion Maranatha | Religion-related | 501(c)(3) | 2022 | |||
| Castro Valley Church of the Nazarene | 501(c)(3) | 1963 | ||||
| Castro Valley Crocodiles Swim Team | Recreation and sports | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Castro Valley Independent Baseball League Inc | Recreation and sports | 501(c)(3) | 2025 | |||
| Castro Valley Orchestra Association | Arts, culture and humanities | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Castro Valley Outreach Inc | Human services | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Castro Valley Post No 649 the American Legion Department of | 501(c)(19) | 2026 | $0 | $0 | 2025-12 | |
| Castro Valley Science | Education | 501(c)(3) | 2017 | $0 | $0 | 2025-06 |
| Castro Valley Veterans Memorial Library Foundation | Public and societal benefit | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Casualty Actuaries of the Bay Area | Mutual and membership benefit | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Center for Jewish Life | Religion-related | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Chinese American Chemical Society | 501(c)(3) | 1988 | $0 | $0 | 2025-12 | |
| Christ the Rock | Religion-related | 501(c)(3) | 2015 | |||
| Christian Harmony - Armoniacristiana Inc | Religion-related | 501(c)(3) | 2007 | |||
| Christians in Photojournalism Inc | 501(c)(3) | 1986 | $0 | $0 | 2025-12 | |
| Church of God of Prophecy Bible Place | 501(c)(3) | 1969 | ||||
| Church of Scientology | 501(c)(3) | 1993 | ||||
| Cityserve International Incorporated | Public and societal benefit | 501(c)(3) | 2024 | $0 | $5,000 | 2025-12 |
| Columbiettes Incorporated Supreme Council | 501(c)(10) | 1977 | $0 | $0 | 2025-08 | |
| Congregation Shir Ami | 501(c)(3) | 1964 | ||||
| Cooperative Contingent of Concerned World Citizens Inc | International, foreign affairs and national security | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Creative Metamorphosis Teaching Center | Religion-related | 501(c)(3) | 2014 | |||
| Cultivyt Org | Human services | 501(c)(3) | 2025 | |||
| Demolay International | Arts, culture and humanities | 501(c)(3) | 1996 | $0 | $0 | 2024-12 |
| Didimdol Korean Church | Religion-related | 501(c)(3) | 2026 | |||
| District 15 Al-Anon Alateen Family Groups and Information Services | 501(c)(3) | 1988 | $0 | $0 | 2025-12 | |
| District 21 American Contract Bridge League | 501(c)(4) | 2010 | $0 | $0 | 2024-12 | |
| Dream School Foundation USA | Education | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Duchen Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $277,635 | 2025-12 | |
| East Bay Business Connection | Community improvement and capacity building | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| East Bay Dachshund Club | Animal-related | 501(c)(7) | 2025 | $0 | $0 | 2025-12 |
| East Bay Spartans Inc | Recreation and sports | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| East Bay Swim League | Recreation and sports | 501(c)(3) | 2026 | |||
| East Bay Vietnamese Alliance Church of the Christian and Missionary | 501(c)(3) | 1972 | ||||
| Eden Community Land Trust | Housing and shelter | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Eden Korean Presbyterian Church | 501(c)(3) | 1984 | ||||
| Eden Township Healthcare District Financing Corporation | Public and societal benefit | 501(c)(4) | 2020 | $0 | $1 | 2025-06 |
| Educate Young Project | Diseases, disorders and medical disciplines | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Eliodoro E Marasigan Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $37,756 | 2025-12 | |
| Ellm | Human services | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Ethiopian Cultural Exchange Foundat Ion | Arts, culture and humanities | 501(c)(3) | 2026 | |||
| Everloved Christian Fellowship Center | Religion-related | 501(c)(3) | 2013 | |||
| Faith Lutheran Church of Castro Valley | 501(c)(3) | 1987 | 2013-12 | |||
| Farth Chapel Church of God | 501(c)(3) | 1971 | ||||
| First Baptist Church of Castro Valley | Religion-related | 501(c)(3) | 2020 | 2010-12 | ||
| Firstgen Connect Inc | Public and societal benefit | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Flex-Tax Charity Group | Public and societal benefit | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Food Nutrition and Conservation | Food, agriculture and nutrition | 501(c)(3) | 2025 | $0 | $0 | 2026-03 |
| Friends of Chabad Education Network - Israel | Religion-related | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Friends of Outdoor Recreation in San Lorenzo | Education | 501(c)(3) | 2004 | $0 | $0 | 2025-06 |
| Friends of San Lorenzo Creek | Environment | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Friends of Wow Vienna | Religion-related | 501(c)(3) | 2026 | |||
| Gateway Bible Church | Religion-related | 501(c)(3) | 2011 | |||
| Giving Something Back Jr Golf | Recreation and sports | 501(c)(3) | 2026 | |||
| Global Childrens Rights | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-09 |
| Golden Gate Blues Society | Arts, culture and humanities | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Grand Lodge of Dania of California & Nevada | 501(c)(8) | 1972 | $0 | $0 | 2025-12 | |
| Gravy Boat Charitable Foundation | Education | 501(c)(3) | 2012 | $0 | $0 | 2026-01 |
| Hands for Global Health | Health care | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Hannah Haile Foundation NFP | Religion-related | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Harvest Time Church of God in Christ | Religion-related | 501(c)(3) | 2004 | |||
| Hayward Area Travel Club | Recreation and sports | 501(c)(7) | 2017 | $0 | $0 | 2025-12 |
| Hayward-Castro Valley Chapter 934 Women of the Moose | 501(c)(8) | 1935 | $0 | $0 | 2026-04 | |
| Health and Human Wellness Foundation | Human services | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Holy Cross Orthodox Monastery | 501(c)(3) | 1983 | ||||
| Hop4kids | International, foreign affairs and national security | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| Hosanna Pathways | Human services | 501(c)(3) | 1986 | $1.3 million | 2025-12 | |
| Humanity Love and Mercy | Human services | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Iglesia Cristiana Jesucristo Viene Pronto | Religion-related | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Iglesia El Refugio En Cristo Jesus Hayward Ca Inc | Religion-related | 501(c)(3) | 2026 | |||
| Ignite Joy Church Inc | Religion-related | 501(c)(3) | 2015 | |||
| Igreen Planet | Environment | 501(c)(3) | 2024 | $1 | 2025-12 | |
| Immanuel Mission To Seamen | 501(c)(3) | 1967 | ||||
| Indelible Grace Church | 501(c)(3) | 1974 | ||||
| Inglesia Bautistia Exodo | Religion-related | 501(c)(3) | 2010 | |||
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2025-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2025-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Inner Wheel USA Inc | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| International Academy of Earthquake Prediction | Public safety, disaster preparedness and relief | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Italian Catholic Federation of California Inc | 501(c)(8) | 1972 | $0 | $0 | 2024-12 | |
| James and Barbara Knuppe Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $273,096 | 2024-12 | |
| Jenny Lin Foundation | Crime and legal-related | 501(c)(3) | 1994 | $0 | $0 | 2025-12 |
| Jullan Foundation | Education | 501(c)(3) | 2016 | $0 | $0 | 2026-05 |
| Karol Uryga Nawaroski Foundation | 501(c)(3) | 1985 | $1 million | 2024-12 | ||
| Keongmas Association | Education | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Kiwanis International Inc | 501(c)(4) | 1948 | $0 | $0 | 2025-12 | |
| Koamrus Mission Foundation | Religion-related | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Korean Young Nak Presbyterian Church of East Bay | Religion-related | 501(c)(3) | 1995 | |||
| Laugh and Learn Center | Community improvement and capacity building | 501(c)(3) | 2026 | |||
| League of Women Voters of the Eden Area | Public and societal benefit | 501(c)(3) | 2022 | $0 | $0 | 2026-06 |
| Lifeline Emergency Housing | Housing and shelter | 501(c)(3) | 2026 | |||
| Little Farm | Animal-related | 501(c)(3) | 2025 | |||
| Little League Baseball Inc | Recreation and sports | 501(c)(3) | 1967 | $0 | $0 | 2025-09 |
| Luso-American Financial A Fraternal Benefit Society | 501(c)(8) | 1972 | $0 | $0 | 2024-12 | |
| MBK Foundation | 501(c)(3) | 1993 | $1.8 million | 2025-12 | ||
| Making Colors Matter Inc | Youth development | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Maktab for All | Education | 501(c)(3) | 2025 | |||
| Masters Hand Foundation | Public and societal benefit | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Mata Amritanandamayi Center | 501(c)(3) | 1987 | 2016-03 | |||
| Mei de and Nai Kang Foundation | International, foreign affairs and national security | 501(c)(3) | 2015 | $173,174 | 2025-10 | |
| Mission Together Church | Religion-related | 501(c)(3) | 2008 | |||
| Modern Woodmen of America | 501(c)(8) | 1972 | $0 | $0 | 2025-12 | |
| Monastery of St Mary | Religion-related | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Muhyiddin Ibn Arabi Society | 501(c)(3) | 1990 | $0 | $0 | 2025-12 | |
| National Sos | Human services | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Neighborhood Church of Castro Valle Y | 501(c)(3) | 1969 | 2025-06 | |||
| New Life Christian Fellowship | 501(c)(3) | 1955 | ||||
| New Testament Fellowship Center Church | 501(c)(3) | 1978 | ||||
| Newfoundland Health and Rescue Inc | Animal-related | 501(c)(3) | 2003 | $0 | $0 | 2024-12 |
| Norcal Punjabi Youth Foundation Inc | Arts, culture and humanities | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Norris Canyon Property Owners Association | Mutual and membership benefit | 501(c)(12) | 2025 | |||
| North Bay Islamic Association | Religion-related | 501(c)(3) | 1999 | $0 | $0 | 2024-12 |
| North Bay Queens of Cali | Human services | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Oakland Revival Tabernacle | 501(c)(3) | 1959 | ||||
| Order of the Eastern Star of California | 501(c)(10) | 2020 | ||||
| Oyster Bay Disc Golf Club | Recreation and sports | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Palomares Parent Teacher Club | Education | 501(c)(3) | 2004 | $0 | $0 | 2025-06 |
| Pamela and Richard Rigg Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $2.7 million | 2025-12 | |
| Partimus | Education | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Partnership for Christian Science Nursing | Education | 501(c)(3) | 2001 | $0 | $0 | 2023-12 |
| Peanuts Helping Hands Inc | Housing and shelter | 501(c)(3) | 2025 | |||
| People People Media Foundation | Arts, culture and humanities | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Pilgrim Baptist Church | 501(c)(3) | 1955 | ||||
| Pilgrim Organization Inc | Human services | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Plantify | Environment | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Positive Changes Services Inc | Public and societal benefit | 501(c)(3) | 2025 | |||
| Proctor School Science and Technology Booster Inc | Education | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Providence Church | Religion-related | 501(c)(3) | 2006 | |||
| Pta California Congress of Parents Teachers & Students Inc | 501(c)(3) | 1943 | $0 | $0 | 2025-06 | |
| Redwood Chapel Inc | 501(c)(3) | 1956 | 2016-06 | |||
| Resilient Roots Chiropractic | Health care | 501(c)(3) | 2026 | |||
| River of Life Assembly of God | 501(c)(3) | 1964 | ||||
| Riyadulummah Inc | Religion-related | 501(c)(3) | 2023 | |||
| Road Runners Club of America | 501(c)(3) | 1976 | ||||
| Roumeli Society of the Bay Area | 501(c)(7) | 1986 | $0 | $0 | 2025-12 | |
| Safe Shared Streets Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Safehouse Church | Religion-related | 501(c)(3) | 2017 | $0 | $0 | 2022-12 |
| San Francisco Bay Area Chamber Choir | Arts, culture and humanities | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| San Leandro Unity Church | 501(c)(3) | 1970 | ||||
| Second Saturday | Mental health and crisis intervention | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Serving Community Church | 501(c)(3) | 1992 | ||||
| Societas Sancti Joannis Apostoli | 501(c)(3) | 1992 | ||||
| Solano Central Korean Baptist Church | Religion-related | 501(c)(3) | 1999 | |||
| South Hayward Parish | 501(c)(3) | 1976 | ||||
| Spiritual Assembly of the Bahais of Alameda County West | 501(c)(3) | 1995 | ||||
| Sportshopes | Education | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Storys Not Over Yet | Human services | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Straycap Limited | Youth development | 501(c)(3) | 2024 | $2.3 million | 2025-12 | |
| Students Association for Education | Education | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Sunshine Africa Education Inc | Social science | 501(c)(3) | 2018 | $0 | $0 | 2025-11 |
| The Greek Orthodox Church of the Resurrection | Religion-related | 501(c)(3) | 2022 | |||
| The Hermans | Recreation and sports | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| The Milani Foundation | Youth development | 501(c)(3) | 2026 | |||
| Thousand Mather Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $31,607 | 2025-10 | |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2024-12 | |
| Toastmasters International | 501(c)(3) | 1966 | $0 | $0 | 2025-12 | |
| Tops Club Inc | 501(c)(3) | 2008 | $0 | $0 | 2026-03 | |
| Tops Club Inc | Health care | 501(c)(3) | 2008 | $0 | $0 | 2026-03 |
| Trenado Inc | Human services | 501(c)(3) | 2023 | $0 | $0 | 2025-11 |
| Underwater Recovery Unit II | Public safety, disaster preparedness and relief | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Undivided Women War & the Battle for Peace | International, foreign affairs and national security | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| United Corporate Leagues | Recreation and sports | 501(c)(3) | 2026 | |||
| United Methodist Church of Castro Valley | 501(c)(3) | 1974 | ||||
| Unity Church of Castro Valley | 501(c)(3) | 1970 | ||||
| Valley First Presbyterian Church | 501(c)(3) | 1992 | ||||
| Voa Foundation Inc | Education | 501(c)(3) | 2022 | $1,293 | 2023-12 | |
| Western Region Sports Acrobatics Association | Recreation and sports | 501(c)(3) | 2012 | $0 | $0 | 2025-08 |
| Who Rescues Who | Recreation and sports | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Womens National Book Association Inc | 501(c)(3) | 1977 | $0 | $0 | 2024-12 | |
| Worship Encounter | Religion-related | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
By cause in Castro Valley, CA
- Religion-related 42
- Education 32
- Recreation and sports 21
- Arts, culture and humanities 17
- Human services 16
- International, foreign affairs and national security 10
- Public and societal benefit 10
- Philanthropy, voluntarism and grantmaking foundations 8
- Health care 8
- Public safety, disaster preparedness and relief 6
- Housing and shelter 6
- Youth development 6
- Environment 6
- Animal-related 5
- Crime and legal-related 5
- Mental health and crisis intervention 4
- Community improvement and capacity building 4
- Mutual and membership benefit 3
Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.