Data / Nonprofits / California / San Mateo / Environment
Environment nonprofits in San Mateo, CA: 12 registered with the IRS
12 environment nonprofits are registered with the IRS in San Mateo, CA, 12 of them 501(c)(3) charities; the 4 that report revenue took in $834,548. The largest by revenue: Sustainable San Mateo County ($412,049), Orchid Conservation Alliance ($229,360), San Mateo Arboretum Society Inc ($117,763).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Sustainable San Mateo County | 501(c)(3) | 2002 | $412,049 | $287,688 | 2025-12 |
| Orchid Conservation Alliance | 501(c)(3) | 2006 | $229,360 | $353,142 | 2025-12 |
| San Mateo Arboretum Society Inc | 501(c)(3) | 1976 | $117,763 | $265,572 | 2025-06 |
| San Mateo Garden Center | 501(c)(3) | 1972 | $75,376 | $170,104 | 2024-12 |
| Center for Balanced Land Use Inc | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| Cleaning Cali Foundation Inc | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Everflow Sanctuary | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Get Dirty | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Green Apple Foundation Inc | 501(c)(3) | 2020 | $713,079 | 2025-12 | |
| Nature Bloomers | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Nuoc Solutions | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Responsible Development for Water Tank Hill | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
Other causes in San Mateo, CA
- Human services 76
- Education 59
- Philanthropy, voluntarism and grantmaking foundations 42
- Religion-related 39
- Recreation and sports 36
- Arts, culture and humanities 33
- Community improvement and capacity building 28
- Youth development 10
- Health care 10
- Mental health and crisis intervention 10
- International, foreign affairs and national security 9
- Housing and shelter 8
- Animal-related 6
- Public and societal benefit 5
- Diseases, disorders and medical disciplines 5
- Medical research 5
- Civil rights, social action and advocacy 4
- Science and technology 4
- Crime and legal-related 4
- Food, agriculture and nutrition 4
- Mutual and membership benefit 4
- Employment 4
Every nonprofit in San Mateo, CA · 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.