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Nonprofits in ISLIP, NY

64 tax-exempt organizations with a return on IRS file.

Largest nonprofits in ISLIP by revenue

Top 5s in ISLIP

Most raised in gifts and grants

Contributions, gifts and grants received in the year

  1. 1Seatuck Environmental Assn Inc990, year ended Dec 2024$1M
  2. 2American Federation of Teachers990, year ended Aug 2025$286.7K
  3. 3Amplo Family Foundation Inc990, year ended Dec 2024$238K
  4. 4Toby Onubogu Foundation Inc990, year ended Dec 2023$208.9K
  5. 5Billy Moon Foundation Inc990-EZ, year ended Dec 2024$148.3K

Largest reserves

Net assets (fund balance) at year end

  1. 1Seatuck Environmental Assn Inc990, year ended Dec 2024$2.1M
  2. 2Guglielmo Marconi Home Lodge 2232990, year ended Dec 2025$477.6K
  3. 3Islip School Age Child Care Corporation990, year ended Jun 2025$445.6K
  4. 4New York Cto Club Inc990-EZ, year ended Dec 2023$304.4K
  5. 5Billy Moon Foundation Inc990-EZ, year ended Dec 2024$238.8K

Highest-paid people

Compensation from the organization and related organizations, including other pay

  1. 1Enrico NardoneExecutive Director · Seatuck Environmental Assn Inc$100.2K
  2. 2Carin WinterPresident, CEO · Mission Be Inc$90.1K
  3. 3Jennifer ChlystunProgram Director · Islip School Age Child Care Corporation$85.6K
  4. 4Madeline SharrockExecutive Director · Keep Islip Clean Inc$45K
  5. 5Dannielle GeraghtyPresident · Islip Breast Cancer Coalition Inc$20.3K

All nonprofits in ISLIP, A–Z