Data / Nonprofits / Oklahoma / Tulsa / Environment
Environment nonprofits in Tulsa, OK: 38 registered with the IRS
38 environment nonprofits are registered with the IRS in Tulsa, OK, 36 of them 501(c)(3) charities; the 13 that report revenue took in $26.5 million. The largest by revenue: Land Legacy ($14.1 million), Native Preservation Co ($6.6 million), Oklahoma Centennial Botanical Garden Inc ($4 million).
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Every organization, largest by revenue first
Other causes in Tulsa, OK
- Religion-related 573
- Philanthropy, voluntarism and grantmaking foundations 326
- Education 302
- Human services 252
- Arts, culture and humanities 188
- Community improvement and capacity building 118
- Recreation and sports 103
- Youth development 87
- Health care 68
- Mental health and crisis intervention 62
- Housing and shelter 52
- International, foreign affairs and national security 51
- Animal-related 47
- Public and societal benefit 35
- Crime and legal-related 31
- Food, agriculture and nutrition 27
- Civil rights, social action and advocacy 25
- Employment 21
- Mutual and membership benefit 17
- Diseases, disorders and medical disciplines 16
- Public safety, disaster preparedness and relief 14
- Medical research 11
- Science and technology 11
Every nonprofit in Tulsa, 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.