Data / Nonprofits / Maryland / Gaithersburg / Environment
Environment nonprofits in Gaithersburg, MD: 4 registered with the IRS
4 environment nonprofits are registered with the IRS in Gaithersburg, MD, 4 of them 501(c)(3) charities; the 2 that report revenue took in $4 million. The largest by revenue: Izaak Walton League of America Inc ($4 million), Muddy Branch Alliance Inc ($9,875).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Izaak Walton League of America Inc | 501(c)(3) | 1985 | $4 million | $13.4 million | 2025-12 |
| Muddy Branch Alliance Inc | 501(c)(3) | 2011 | $9,875 | $40,621 | 2024-12 |
| Seneca Creek Watershed Partners Inc | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| The Mind and Environment Society | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
Other causes in Gaithersburg, MD
- Religion-related 136
- Education 80
- Human services 63
- Arts, culture and humanities 60
- Recreation and sports 32
- Community improvement and capacity building 30
- International, foreign affairs and national security 29
- Philanthropy, voluntarism and grantmaking foundations 25
- Youth development 18
- Health care 17
- Diseases, disorders and medical disciplines 15
- Public and societal benefit 11
- Mental health and crisis intervention 11
- Housing and shelter 10
- Animal-related 9
- Science and technology 9
- Medical research 8
- Food, agriculture and nutrition 8
- Mutual and membership benefit 5
- Public safety, disaster preparedness and relief 4
- Employment 3
- Crime and legal-related 3
- Civil rights, social action and advocacy 3
Every nonprofit in Gaithersburg, MD · 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.