Data / Nonprofits / Connecticut / Greenwich / Environment
Environment nonprofits in Greenwich, CT: 12 registered with the IRS
12 environment nonprofits are registered with the IRS in Greenwich, CT, 12 of them 501(c)(3) charities; the 7 that report revenue took in $9.4 million. The largest by revenue: Garden Conservancy Inc ($7.7 million), The Greenwich Land Trust Inc ($1 million), Greenwich Tree Conservancy Inc ($332,641).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Garden Conservancy Inc | 501(c)(3) | 1990 | $7.7 million | $44.9 million | 2025-12 |
| The Greenwich Land Trust Inc | 501(c)(3) | 1977 | $1 million | $115 million | 2024-12 |
| Greenwich Tree Conservancy Inc | 501(c)(3) | 2007 | $332,641 | $1.5 million | 2025-12 |
| Greenwich Green and Clean Inc | 501(c)(3) | 1987 | $124,449 | $438,254 | 2025-12 |
| Hortulus Inc | 501(c)(3) | 1967 | $68,345 | $284,027 | 2026-06 |
| Federated Garden Clubs of Connecticut Inc | 501(c)(3) | 1967 | $68,039 | $295,624 | 2025-06 |
| Federated Garden Clubs of Connecticut Inc | 501(c)(3) | 1967 | $66,526 | $202,984 | 2025-06 |
| Chantecaille Family Foundation | 501(c)(3) | 2022 | $154.4 million | 2024-12 | |
| Magnaverde Foundation Inc | 501(c)(3) | 1996 | $47,876 | 2025-12 | |
| Pemberwick Glenville Association Inc | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Voda Foundation | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Wernickes Foundation of America Inc | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
Other causes in Greenwich, CT
- Philanthropy, voluntarism and grantmaking foundations 132
- Education 50
- Arts, culture and humanities 47
- Human services 22
- Recreation and sports 22
- Health care 19
- Community improvement and capacity building 16
- Religion-related 16
- International, foreign affairs and national security 10
- Youth development 9
- Diseases, disorders and medical disciplines 7
- Public and societal benefit 7
- Housing and shelter 6
- Animal-related 6
- Employment 6
- Public safety, disaster preparedness and relief 5
- Medical research 5
- Mental health and crisis intervention 4
- Civil rights, social action and advocacy 4
- Science and technology 3
Every nonprofit in Greenwich, CT · 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.