Data / Nonprofits / New York / Riverhead
Nonprofits in Riverhead, NY: 181 registered with the IRS
181 nonprofits are registered with the IRS in Riverhead, NY, 150 of them 501(c)(3) charities; the 66 that report revenue took in $123.2 million. The largest by revenue: East End Disability Associates Inc ($40.7 million), Aid To the Developmentally Disabled Inc ($32.3 million), Timothy Hill Childrens Ranch Inc ($16.4 million). Most common causes: religion-related (16), arts, culture and humanities (12), human services (12).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| East End Disability Associates Inc | Human services | 501(c)(3) | 1996 | $40.7 million | $17.8 million | 2024-12 |
| Aid To the Developmentally Disabled Inc | Human services | 501(c)(3) | 1989 | $32.3 million | $17.8 million | 2025-12 |
| Timothy Hill Childrens Ranch Inc | Human services | 501(c)(3) | 1977 | $16.4 million | $19.6 million | 2025-06 |
| Central Suffolk Hospital Foundation | Health care | 501(c)(3) | 2004 | $8.1 million | $58.8 million | 2024-12 |
| Riverhead Free Library | Education | 501(c)(3) | 1959 | $5.8 million | $10.9 million | 2025-06 |
| Riverhead Volunteer Ambulance Corps Inc | Health care | 501(c)(3) | 1998 | $2.2 million | $2.7 million | 2024-12 |
| Riverhead Lodge No 1742 Loyal Order of Moose | 501(c)(8) | 1935 | $2 million | $1.3 million | 2026-04 | |
| The Flanders Northampton Volunteer Ambulance Company Inc | Health care | 501(c)(3) | 2014 | $1.4 million | $920,511 | 2024-12 |
| Riverhead Community Awareness Program Inc | 501(c)(3) | 1988 | $1.2 million | $456,598 | 2025-12 | |
| Iglesia La Nueva Jerusalen | 501(c)(3) | 1964 | $1.2 million | $9.7 million | 2025-12 | |
| Riverhead Central Faculty Association Benefit Trust Fund | Mutual and membership benefit | 501(c)(9) | 2008 | $1 million | $1.8 million | 2025-06 |
| Riverhead Foundation for Marine Research and Preservation | Animal-related | 501(c)(3) | 1996 | $860,203 | $996,540 | 2024-12 |
| East End Arts & Humanities Council | 501(c)(3) | 1973 | $789,388 | $222,784 | 2025-08 | |
| Warrior Ranch Foundation Inc | Health care | 501(c)(3) | 2016 | $744,234 | $962,237 | 2025-12 |
| Butterfly Effect Project Inc | Youth development | 501(c)(3) | 2015 | $596,343 | $82,730 | 2024-12 |
| American Federation of Teachers | 501(c)(5) | 1967 | $527,209 | $497,788 | 2025-06 | |
| Suffolk County Historical Society | Arts, culture and humanities | 501(c)(3) | 1941 | $490,063 | $2.2 million | 2024-12 |
| Hallockville Inc | Arts, culture and humanities | 501(c)(3) | 1982 | $454,068 | $1.5 million | 2024-12 |
| Spirits Promise Equine Rescue Corp | Animal-related | 501(c)(3) | 2012 | $434,489 | $268,131 | 2024-12 |
| Maureens Haven Inc | Community improvement and capacity building | 501(c)(3) | 1998 | $429,857 | $439,073 | 2024-12 |
| Housing America Foundation | Housing and shelter | 501(c)(3) | 2001 | $413,068 | $2.6 million | 2024-12 |
| Riverhead Rotary Charities Inc | Human services | 501(c)(3) | 2013 | $407,469 | $817,787 | 2025-06 |
| Sound Justice Initiative Inc | 501(c)(3) | 2020 | $355,169 | $126,907 | 2025-12 | |
| Riverhead Volunteer Firefighters Association Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 2014 | $348,937 | $1.3 million | 2024-12 |
| The Place for Learning Inc | Education | 501(c)(3) | 1996 | $285,103 | $5.5 million | 2025-06 |
| Riverhead Police Benevolent Association Inc | 501(c)(5) | 1993 | $248,930 | $344,646 | 2024-12 | |
| LT Michael P Murphy Usn Memorial Scholarship Foundation | Education | 501(c)(3) | 2006 | $237,559 | $982,673 | 2024-12 |
| Gwen L Kosinski Foundation Inc | Medical research | 501(c)(3) | 2005 | $211,091 | $341,898 | 2025-12 |
| North Fork Breast Health Coalition Inc | Arts, culture and humanities | 501(c)(3) | 1998 | $204,572 | $359,161 | 2024-12 |
| Suffolk County Correction Officers Benevolent Association Inc | 501(c)(9) | 1975 | $188,050 | $133,152 | 2025-12 | |
| Rotary International District 7255 | Community improvement and capacity building | 501(c)(4) | 2023 | $185,491 | $282,805 | 2025-06 |
| East End Tourism Alliance Inc | Community improvement and capacity building | 501(c)(6) | 2009 | $169,514 | $18,591 | 2024-12 |
| Riverhead Business Improvement District Management Assoc Inc | Community improvement and capacity building | 501(c)(3) | 1997 | $166,639 | $122,271 | 2025-12 |
| Free & Accepted Masons of New York | 501(c)(10) | 1940 | $151,342 | $2.8 million | 2025-12 | |
| Veterans of Foreign Wars Rensselae | 501(c)(19) | $147,967 | $384,123 | 2025-06 | ||
| Long Island Wine Council Inc | 501(c)(6) | 1997 | $139,341 | $139,009 | 2025-06 | |
| Benevolent & Protective Order of Elks of the USA | 501(c)(8) | 1951 | $130,577 | $64,334 | 2026-03 | |
| Riverhead Cemetery Association | 501(c)(13) | 1944 | $130,376 | $841,539 | 2025-06 | |
| Rotary District 7255 Foundation Inc | Community improvement and capacity building | 501(c)(3) | 2011 | $111,506 | $34,056 | 2025-06 |
| Riverhead Chamber of Commerce | 501(c)(6) | 1973 | $110,252 | $102,022 | 2025-12 | |
| Humane Long Island | Animal-related | 501(c)(3) | 2014 | $98,548 | $27,997 | 2024-12 |
| Family Community Life Center Inc | Recreation and sports | 501(c)(3) | 2024 | $89,417 | $72,085 | 2024-12 |
| I R I E Therapeutic Equestrian Program | Education | 501(c)(3) | 1996 | $88,364 | $45,768 | 2025-12 |
| Empire State Huskies Long Island Inc | 501(c)(3) | 2020 | $87,192 | $35,059 | 2024-12 | |
| Dr Lazarus Onwuka Medical Foundation Inc | Health care | 501(c)(3) | 2022 | $85,000 | $3,000 | 2024-12 |
| Little League Baseball Inc | Youth development | 501(c)(3) | 1967 | $69,095 | $6,339 | 2025-09 |
| Marcos 16 15 | Religion-related | 501(c)(3) | 2000 | $68,661 | $929,262 | 2025-12 |
| Rotary International | 501(c)(4) | 1958 | $59,568 | $93,054 | 2024-06 | |
| Long Island Buddhist Meditation Center | Religion-related | 501(c)(3) | 2009 | $55,928 | $222,077 | 2024-12 |
| WHR Charities Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $48,012 | $70,311 | 2023-06 |
| Friends of the Riverhead Free Library Inc | Education | 501(c)(3) | 2001 | $44,943 | $74,020 | 2025-04 |
| Hope and Resilience Long Island Inc | Crime and legal-related | 501(c)(3) | 2023 | $44,237 | $5,332 | 2025-12 |
| East End Counselors Association Inc | Education | 501(c)(3) | 2015 | $42,959 | $50,311 | 2026-06 |
| Open Arms Care Center Inc | Human services | 501(c)(3) | 2000 | $38,942 | $24,880 | 2024-12 |
| Iglesia Apostolica Eden Efesios 220 | Religion-related | 501(c)(3) | 2011 | $36,795 | $190,401 | 2025-12 |
| Eastern Long Island Quilters Guild | 501(c)(7) | 1982 | $31,285 | $33,087 | 2025-12 | |
| DMS Dream Foundation | Education | 501(c)(3) | 2024 | $26,348 | $46,064 | 2025-12 |
| Johannas Hope Inc | Human services | 501(c)(3) | 2022 | $21,356 | $16,501 | 2024-12 |
| Our Future Generation | Arts, culture and humanities | 501(c)(3) | 2014 | $20,530 | $19,450 | 2025-12 |
| Harvest East End Inc | Human services | 501(c)(3) | 2012 | $20,466 | $29,282 | 2025-06 |
| Forget Me Not of America Inc | Mental health and crisis intervention | 501(c)(3) | 2017 | $18,138 | $367,065 | 2025-12 |
| Timothy Foundation Inc | Community improvement and capacity building | 501(c)(2) | 2004 | $12,781 | $1.1 million | 2025-06 |
| Flanders Riverside and Northampton Community Association Inc | Community improvement and capacity building | 501(c)(3) | 2003 | $11,888 | $23,688 | 2025-12 |
| Heidis Helping Angels | Human services | 501(c)(3) | 2012 | $9,139 | $6,388 | 2025-12 |
| Indian Network of Eastern Long Island Inc | Arts, culture and humanities | 501(c)(3) | 2008 | $1,500 | $4,787 | 2025-12 |
| Spay Alter Vaccinate Every Stray Inc | Animal-related | 501(c)(3) | 1996 | $40 | $33,457 | 2024-12 |
| 2ND Chance Inc | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| 4 Petes Sake Inc | Animal-related | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Al-Nahal Foundation | Mental health and crisis intervention | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| All Saints Greek Orthodox Mission Inc | Religion-related | 501(c)(3) | 1998 | |||
| American Federation of Teachers | 501(c)(5) | 1967 | $0 | $0 | 2025-06 | |
| Aram Square Club Inc | Arts, culture and humanities | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Baiting Hollow Cemetery Association Inc | 501(c)(13) | 1974 | $0 | $0 | 2025-12 | |
| Blue Waves Boys Basketball Booster Club Inc | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bridge Improving Access To Health Care Inc | Health care | 501(c)(3) | 2009 | |||
| Business Alliance Town of Southampton Inc | 501(c)(6) | 1995 | $0 | $0 | 2025-12 | |
| Centro Franciscano A Mission of the Diocese of Long Island | 501(c)(3) | 1972 | ||||
| Church of God | 501(c)(3) | 1972 | ||||
| Church of the Harvest | 501(c)(3) | 1990 | ||||
| Civil Service Employees Association | 501(c)(5) | 1970 | $0 | $0 | 2025-09 | |
| Civil Service Employees Association | 501(c)(5) | 1970 | $0 | $0 | 2025-09 | |
| Civil Service Employees Association | 501(c)(5) | $0 | $0 | 2025-09 | ||
| Civil Service Employees Association | 501(c)(5) | 1947 | $0 | $0 | 2025-09 | |
| Civil Service Employees Association | 501(c)(5) | 1970 | $0 | $0 | 2025-09 | |
| Coastal Reserve Corp | Environment | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Community Bible Church | 501(c)(3) | 1983 | ||||
| Cooperative Extension Association in the State of N Y | 501(c)(3) | 1966 | 2024-12 | |||
| Corey Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1998 | $26.2 million | 2025-12 | |
| Council for the Vail-Leavitt Music Hall Inc | 501(c)(3) | 1981 | $0 | $0 | 2026-02 | |
| Critterville Farm Sanctuary Inc | Animal-related | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Dirt Dad Fund Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Discoveries East End Learning and Mentorship Center | Youth development | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Double C Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2014 | $37,985 | 2024-12 | |
| East End Womens Network Inc | Social science | 501(c)(3) | 2017 | $0 | $0 | 2025-06 |
| Eastern Long Island Antique Fire Apparatus Association | Education | 501(c)(3) | 2018 | $24,579 | 2025-12 | |
| Eugenio Cuttica Foundation Corp | Environment | 501(c)(3) | 2025 | |||
| First Baptist Church | 501(c)(3) | 1955 | ||||
| Flanders Village Historical Society | Arts, culture and humanities | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friars Head Disaster Relief Fund | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Friendship Baptist Church | 501(c)(3) | 1955 | ||||
| Friendship Baptist Church of Riverhead | Religion-related | 501(c)(3) | 2002 | |||
| Fund for Reconciliation & Development | International, foreign affairs and national security | 501(c)(3) | 1990 | $0 | $0 | 2025-08 |
| Gertrude and Leonard McCombe Foundaiton | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2019 | $1.6 million | 2025-12 | |
| Grace Church | 501(c)(3) | 1972 | ||||
| Heart of Gold Ministries Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | |||
| House of Praise Christian Revival Center Inc | 501(c)(3) | 1992 | ||||
| Iglesia Cristiana Emanuel Inc | Religion-related | 501(c)(3) | 2019 | $0 | $481,910 | 2024-12 |
| Iglesia Episcopal San Francisco | 501(c)(3) | 1972 | ||||
| Iglesia Evangelica Jesucristo Es La Pena de Horeb | Religion-related | 501(c)(3) | 2022 | |||
| Iglesia Pentecostal Familia de Dios | 501(c)(3) | 1964 | ||||
| Iglesia de Cristo En Riverhead Inc | Religion-related | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Im My Sisters Keeper Inc | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Independent Order of Odd Fellows | 501(c)(8) | 2019 | $0 | $0 | 2025-09 | |
| John Wesley Village II Inc | Housing and shelter | 501(c)(3) | 1998 | $9.1 million | 2025-12 | |
| Konnected Thru 22 Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Laurents Hatcher Foundation Inc | 501(c)(3) | 1965 | $21.4 million | 2024-12 | ||
| Let There Be Aid Inc | Housing and shelter | 501(c)(3) | 2023 | $0 | $1,000 | 2024-12 |
| Li Reapers Fastpitch Incorporated | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2025-07 |
| Living Water Full Gospel Church Inc | 501(c)(3) | |||||
| Long Island District of New York State Assoc of Fam & Consumer Scie | Food, agriculture and nutrition | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Luz En Tu Senda | 501(c)(3) | 1964 | ||||
| Magnificat-Suffolk County Ny Chapter | 501(c)(3) | 1946 | $0 | $0 | 2026-07 | |
| McGann Mercy High School | 501(c)(3) | |||||
| Meridian Triangle 71 | Youth development | 501(c)(3) | 2024 | $3,030 | 2023-12 | |
| Miriams House Ministries | 501(c)(3) | 1996 | ||||
| Nassau Suffolk Civil Engineers | Science and technology | 501(c)(6) | 2011 | $0 | $0 | 2026-06 |
| National Institute for Special Education Inc | Human services | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| National Society of the Daughters of the American Revolution | 501(c)(3) | 1949 | $0 | $0 | 2025-12 | |
| New Arising Global | Religion-related | 501(c)(3) | 2026 | |||
| New Day Charity Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| New Hope Covenant Church Inc | Religion-related | 501(c)(3) | 2024 | |||
| New Life Ministries | 501(c)(3) | 1994 | ||||
| New York State Fire Marshalls and Inspectors Association Inc | Community improvement and capacity building | 501(c)(6) | 2018 | $0 | $0 | 2025-12 |
| North Fork Country Kids Rescue and Preservation Through Pedagogy | Animal-related | 501(c)(3) | 2016 | $0 | $0 | 2026-02 |
| North Shore Christian Church | Religion-related | 501(c)(3) | 2008 | |||
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-03 | |
| Paumanok Weavers Guild | 501(c)(3) | 1989 | $0 | $0 | 2026-06 | |
| Peconic Ballet Foundation Inc | Arts, culture and humanities | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Peconic Green Growth Inc | Community improvement and capacity building | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Peconic United Methodist Housing Development Fund Company Inc | Housing and shelter | 501(c)(3) | 1987 | $0 | $5.5 million | 2024-12 |
| Personhood Education New York Inc | Civil rights, social action and advocacy | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Personhood New York Inc | Civil rights, social action and advocacy | 501(c)(4) | 2018 | $0 | $0 | 2025-12 |
| Porch Missional Community Inc | Religion-related | 501(c)(3) | 2024 | $0 | $1 | 2024-12 |
| Power of Prayer Ministry | Religion-related | 501(c)(3) | 2001 | |||
| Praying Hands Fellowship | Religion-related | 501(c)(3) | 2006 | |||
| Prosocial Design Network Inc | Social science | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Purple City 91 | Education | 501(c)(3) | 2026 | |||
| Race for the Kids Foundation Inc | Youth development | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| Ravenswood Charitable Foundation | Employment | 501(c)(3) | 1996 | $900,527 | 2025-11 | |
| Red Knights International Motorcycle Club - Ny Chapter 25 | Health care | 501(c)(3) | 2026 | |||
| Restoration First Assembly of God | 501(c)(3) | 1964 | ||||
| Rimantas Kaukenas Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| River Head Garden Club | Environment | 501(c)(3) | 2014 | $0 | $0 | 2026-02 |
| Riverhead Athletic Club Inc | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Riverhead Chapter No 1118 Women of the Moose | 501(c)(8) | 1935 | $0 | $0 | 2026-04 | |
| Riverhead Faculty and Community Theatre Inc | 501(c)(3) | 1989 | $0 | $0 | 2025-12 | |
| Riverhead Roots Inc | Recreation and sports | 501(c)(3) | 2026 | |||
| Riverhead Southam Cmnty Center | 501(c)(3) | 1955 | ||||
| Robert David Lion Gardiner Foundation Inc | 501(c)(3) | 1985 | $122.7 million | 2025-12 | ||
| Roma M Karp Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2018 | $3.2 million | 2025-12 | |
| Rotary International | 501(c)(4) | 1942 | $0 | $0 | 2025-06 | |
| Saint John Paul II Regional School | 501(c)(3) | 1946 | ||||
| Savant Garde Institute LTD | 501(c)(3) | 1981 | $0 | $0 | 2026-07 | |
| St Maksymilian M Kolbe Polish School Inc | Arts, culture and humanities | 501(c)(3) | 2020 | $0 | $0 | 2025-08 |
| Stop the Violence Long Island Inc | Youth development | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Student Government Assist Inc | Education | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Suffolk Performing Arts Alliance Inc | Arts, culture and humanities | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| The African-American Educational and Cultural Festival Inc | Arts, culture and humanities | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| The Friends of the Big Duck Inc | Arts, culture and humanities | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| The Lions Club of Reverhead Inc | Human services | 501(c)(4) | 2024 | $0 | $0 | 2026-06 |
| Timothy Hill Christian Camp Inc | Recreation and sports | 501(c)(3) | 2025 | |||
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2025-12 | |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2025-12 | |
| United Pet and Scholarship Fund | Animal-related | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Unity Pentecostal Church of God in Christ Inc | Religion-related | 501(c)(3) | 2025 | |||
| Upwards Advocacy Inc | Health care | 501(c)(3) | 2026 | |||
| Voices for Veterans Corp | Public and societal benefit | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Walking By Faith Ministries | Religion-related | 501(c)(3) | 2023 | |||
| Waves Baseball Club Inc | Recreation and sports | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| Wildwood Warriors Triathlon Club | Recreation and sports | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| William and Mary Stark Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $3.3 million | 2025-12 |
By cause in Riverhead, NY
- Religion-related 16
- Arts, culture and humanities 12
- Human services 12
- Philanthropy, voluntarism and grantmaking foundations 11
- Education 10
- Community improvement and capacity building 9
- Health care 8
- Recreation and sports 8
- Animal-related 8
- Youth development 6
- Housing and shelter 4
- Environment 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.