Data / Nonprofits / Oklahoma / Stillwater / Environment
Environment nonprofits in Stillwater, OK: 7 registered with the IRS
7 environment nonprofits are registered with the IRS in Stillwater, OK, 7 of them 501(c)(3) charities; the 3 that report revenue took in $595,455. The largest by revenue: Lake McMurtry Friends Inc ($474,819), Oklahoma Prescribed Burn Association ($87,950), Payne County Conservation Foundation Inc ($32,686).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Lake McMurtry Friends Inc | 501(c)(3) | 2014 | $474,819 | $115,359 | 2025-06 |
| Oklahoma Prescribed Burn Association | 501(c)(3) | 2015 | $87,950 | $173,767 | 2025-12 |
| Payne County Conservation Foundation Inc | 501(c)(3) | 1992 | $32,686 | $436,885 | 2026-06 |
| Eco-Balance Initiative | 501(c)(3) | 2026 | |||
| Friends of Northern Flyer Alliance Inc | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Great Plains Preservation and Development Foundation | 501(c)(3) | 1994 | $0 | $0 | 2024-12 |
| Oklahoma Prescribed Burn Association Group | 501(c)(3) | 2015 |
Other causes in Stillwater, OK
- Education 58
- Human services 27
- Recreation and sports 23
- Religion-related 21
- Arts, culture and humanities 20
- Community improvement and capacity building 18
- Philanthropy, voluntarism and grantmaking foundations 15
- Animal-related 10
- Youth development 8
- Food, agriculture and nutrition 8
- Mental health and crisis intervention 8
- Health care 6
- Crime and legal-related 4
- Public and societal benefit 4
- Science and technology 3
- Housing and shelter 3
- Civil rights, social action and advocacy 3
Every nonprofit in Stillwater, OK · 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.