Data / Nonprofits / South Carolina / Hilton Head / Environment
Environment nonprofits in Hilton Head, SC: 4 registered with the IRS
4 environment nonprofits are registered with the IRS in Hilton Head, SC, 4 of them 501(c)(3) charities; the 3 that report revenue took in $4 million. The largest by revenue: Hilton Head Island Deep Well Project ($3.6 million), Outside Foundation ($386,597), Hilton Head Reef Foundation ($54,924).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Hilton Head Island Deep Well Project | 501(c)(3) | 1974 | $3.6 million | $10.8 million | 2025-12 |
| Outside Foundation | 501(c)(3) | 2014 | $386,597 | $76,458 | 2025-12 |
| Hilton Head Reef Foundation | 501(c)(3) | 1992 | $54,924 | $279,292 | 2024-12 |
| Bay Point Island Foundation | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
Other causes in Hilton Head, SC
- Philanthropy, voluntarism and grantmaking foundations 49
- Arts, culture and humanities 27
- Education 25
- Recreation and sports 25
- Human services 18
- Religion-related 17
- Animal-related 8
- Community improvement and capacity building 8
- Youth development 7
- Health care 4
- Food, agriculture and nutrition 4
- Mental health and crisis intervention 4
- Housing and shelter 3
- Medical research 3
- International, foreign affairs and national security 3
- Mutual and membership benefit 3
- Public and societal benefit 3
Every nonprofit in Hilton Head, SC · Environment 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.