Data / Nonprofits / New York / Clayton
Nonprofits in Clayton, NY: 49 registered with the IRS
49 nonprofits are registered with the IRS in Clayton, NY, 38 of them 501(c)(3) charities; the 26 that report revenue took in $111.2 million. The largest by revenue: Jefferson-Lewis Etal School Employees Health Plan ($88.3 million), Thousand Islands Land Trust Inc ($5.2 million), Antique Boat Museum ($5 million). Most common causes: arts, culture and humanities (9), recreation and sports (4), education (4).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Jefferson-Lewis Etal School Employees Health Plan | 501(c)(9) | 1981 | $88.3 million | $41.2 million | 2025-06 | |
| Thousand Islands Land Trust Inc | Environment | 501(c)(3) | 1986 | $5.2 million | $32.1 million | 2025-12 |
| Antique Boat Museum | Arts, culture and humanities | 501(c)(3) | 1987 | $5 million | $24.9 million | 2024-12 |
| Clayton Improvement Associaton LTD | Community improvement and capacity building | 501(c)(3) | 1978 | $3 million | $7.7 million | 2025-06 |
| Handweaving Museum and Arts Center | Arts, culture and humanities | 501(c)(3) | 1984 | $2.8 million | $3.3 million | 2024-12 |
| Take the Lead Inc | Food, agriculture and nutrition | 501(c)(3) | 1993 | $1.5 million | $10.1 million | 2024-12 |
| Thousand Islands Emergency Rescue Service Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 2003 | $1 million | $1.4 million | 2024-12 |
| Thousand Islands Performing Artsfund Inc | Arts, culture and humanities | 501(c)(3) | 1980 | $862,556 | $1.2 million | 2025-12 |
| Save the River Inc | Environment | 501(c)(3) | 1982 | $483,640 | $1.8 million | 2025-10 |
| Antique and Classic Boat Society Inc | Arts, culture and humanities | 501(c)(3) | 1987 | $480,157 | $1.5 million | 2025-11 |
| Clayton Yacht Club Inc | Recreation and sports | 501(c)(7) | 2002 | $316,774 | $1.1 million | 2025-12 |
| American Legion | 501(c)(19) | 1946 | $311,457 | $468,809 | 2024-12 | |
| 1000 Islands Charity Poker Run Corp | Recreation and sports | 501(c)(3) | 2017 | $287,511 | $85,373 | 2023-12 |
| Clayton Improvements | 501(c)(3) | 1989 | $224,670 | $605,286 | 2024-12 | |
| Clayton Volunteer Fire Dept Inc | 501(c)(4) | 1974 | $196,710 | $1.6 million | 2025-12 | |
| Thousand Islands Youth Hockey Association Inc | 501(c)(3) | 1981 | $196,099 | $164,943 | 2025-04 | |
| Clayton Chamber of Commerce Inc | 501(c)(6) | 1984 | $185,575 | $68,134 | 2022-12 | |
| Hawn Memorial Library | Education | 501(c)(3) | 1995 | $181,816 | $553,693 | 2025-12 |
| Hibernian Charity | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $124,187 | $368,760 | 2025-06 |
| Paynter Senior Center Inc | Human services | 501(c)(3) | 1981 | $108,079 | $154,089 | 2025-12 |
| Garnsey S Feral Acres Inc | Animal-related | 501(c)(3) | 2019 | $98,741 | $30,479 | 2025-12 |
| Thousand Islands Museum | Arts, culture and humanities | 501(c)(3) | 1968 | $71,358 | $285,293 | 2025-12 |
| Thousand Islands Snowmobile Club | Recreation and sports | 501(c)(3) | 2007 | $59,286 | $187,291 | 2026-03 |
| Clayton Figure Skating Club | 501(c)(3) | 1986 | $44,280 | $30,946 | 2026-04 | |
| Clayton Local Development Corporation | Community improvement and capacity building | 501(c)(3) | 2005 | $42,502 | $21,043 | 2024-12 |
| Thousand Islands Association Inc | Housing and shelter | 501(c)(3) | 1995 | $27,142 | $136,401 | 2025-12 |
| 1000 Islands Chapter Acbs Inc | Arts, culture and humanities | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Adirondack Chapter Antique & Classic Boat Society Inc | Education | 501(c)(3) | 2022 | $0 | $0 | 2025-10 |
| American Legion Auxiliary | 501(c)(19) | 1946 | $0 | $0 | 2025-09 | |
| Clayton Cemetery Asso | 501(c)(13) | 1943 | $0 | $0 | 2026-03 | |
| Grenell Island Historical Association | Arts, culture and humanities | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Grindstone Island Research & Heritage Center | Education | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Institute for Theoretical Biology Inc | 501(c)(3) | 1986 | $0 | $0 | 2025-12 | |
| International Ship Masters Association | 501(c)(8) | 1942 | $0 | $0 | 2025-12 | |
| Kai Music Education Fund Inc | Arts, culture and humanities | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Knights of Columbus Council 350 Inc | Mutual and membership benefit | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| National Society of the Daughters of the American Revolution | 501(c)(3) | 1969 | $0 | $0 | 2026-02 | |
| Northern New York Centers for Conflict Resolution Inc | 501(c)(3) | 1994 | ||||
| Phinney Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $163,548 | 2024-12 | |
| Pto New York Congress Guardino | 501(c)(3) | 2024 | $0 | $0 | 2026-06 | |
| River Community Church | Religion-related | 501(c)(3) | 2024 | |||
| Rotary International | 501(c)(4) | 1942 | $0 | $0 | 2026-06 | |
| Silverwave Cheerleading Inc | Recreation and sports | 501(c)(3) | 2025 | |||
| Third Day Worship Center Clayton Ny | Religion-related | 501(c)(3) | 2004 | |||
| Thousand Islands Athletic Booster Club | Education | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Thousand Islands Education Association Local 3052 | 501(c)(5) | 2022 | $0 | $0 | 2026-06 | |
| Thousand Islands Screen and Dramatic Arts Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Thrones of Fire Inc | Religion-related | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| WWCL Inc | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
By cause in Clayton, NY
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.