Data / Nonprofits / New York / PRT Jefferson / Philanthropy, voluntarism and grantmaking foundations
Philanthropy, voluntarism and grantmaking foundations nonprofits in PRT Jefferson, NY: 9 registered with the IRS
9 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in PRT Jefferson, NY, 9 of them 501(c)(3) charities; the 2 that report revenue took in $103,812. The largest by revenue: Port Jefferson Yacht Club Foundation Inc ($86,723), Thomas Matthew Miloscia Foundation Inc ($17,089).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Port Jefferson Yacht Club Foundation Inc | 501(c)(3) | 2012 | $86,723 | $1,586 | 2024-12 |
| Thomas Matthew Miloscia Foundation Inc | 501(c)(3) | 2016 | $17,089 | $61,257 | 2024-12 |
| Ahepa 319 Port Jefferson Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Aidan Kaminska My Day Foundation Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Frey Family Foundation Inc | 501(c)(3) | 2003 | $3.3 million | 2024-12 | |
| Hamd Foundation Inc | 501(c)(3) | 2016 | $28.5 million | 2024-12 | |
| Port Jefferson Rotary Club Foundation | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Royal Educational Foundation of Port Jefferson Incorporated | 501(c)(3) | 2014 | $18,176 | 2024-06 | |
| Whispers Bridge Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
Other causes in PRT Jefferson, NY
- Arts, culture and humanities 7
- Education 5
- Community improvement and capacity building 4
- Human services 4
- Religion-related 4
- Recreation and sports 3
Every nonprofit in PRT Jefferson, NY · Philanthropy, voluntarism and grantmaking foundations nonprofits across the state · 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.