Data / Nonprofits / Arizona / Flagstaff / Environment
Environment nonprofits in Flagstaff, AZ: 31 registered with the IRS
31 environment nonprofits are registered with the IRS in Flagstaff, AZ, 29 of them 501(c)(3) charities; the 15 that report revenue took in $69.6 million. The largest by revenue: American Conservation ($44.7 million), Grand Canyon Trust Inc ($17 million), Percival Lowell Trust Uw ($3.6 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| American Conservation | 501(c)(3) | 2004 | $44.7 million | $11.1 million | 2024-12 |
| Grand Canyon Trust Inc | 501(c)(3) | 1985 | $17 million | $72.6 million | 2025-12 |
| Percival Lowell Trust Uw | 501(c)(3) | 2018 | $3.6 million | $43 million | 2025-12 |
| Ecoculture | 501(c)(3) | 2021 | $1.1 million | $250,900 | 2024-12 |
| Transition Zone Horticultural Institute Inc | 501(c)(3) | 1982 | $937,704 | $2.8 million | 2024-12 |
| Friends of Camp Colton | 501(c)(3) | 2001 | $765,219 | $3.9 million | 2025-06 |
| Grand Canyon River Guides Inc | 501(c)(3) | 1995 | $418,618 | $565,238 | 2025-06 |
| Greater Flagstaff Forests Partnership Inc | 501(c)(3) | 1998 | $326,453 | $319,583 | 2025-06 |
| Willow Bend Environmental Education Center | 501(c)(3) | 1980 | $238,896 | $232,827 | 2025-06 |
| Care About Climate Inc | 501(c)(3) | 2015 | $147,266 | $262,761 | 2026-02 |
| Women Invested To Save Earth Fund Corporation | 501(c)(3) | 2021 | $134,741 | $1,176 | 2025-12 |
| Grand Canyon Colorado River Fund | 501(c)(3) | 1997 | $95,907 | $475 | 2025-12 |
| Diablo Canyon Group Inc | 501(c)(3) | 1999 | $48,612 | $213,714 | 2024-12 |
| Coconino Plateau Watershed Partnership | 501(c)(3) | 2014 | $40,574 | $106,310 | 2025-12 |
| Northern Arizona Municipal Water Users Association | 501(c)(4) | 2009 | $24,978 | $64,570 | 2025-12 |
| Changed By Nature Outdoors | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Coconino Plateau Water Advisory Council | 501(c)(4) | 2012 | $0 | $0 | 2025-12 |
| Defiantly Ambitious River Runners Expeditions | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Ecoresults Inc | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Flagstaff Dark Skies Coalition | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Fort Valley Neighborhood Association | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Friends of Cochamo | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Friends of Northern Arizona Forests | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Friends of the Rio de Flag | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Grand Canyon Hikers and Backpackers Association Inc | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Kachina Peaks Avalnche Center Inc | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Katowa Homeowners Association | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Landscape Stewardship Collective | 501(c)(3) | 2025 | $0 | $0 | 2026-04 |
| Roots To Resilience | 501(c)(3) | 2025 | |||
| Sun Corridor Trail Alliance | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Townsite Urban Farm | 501(c)(3) | 2023 | $0 | $0 | 2026-01 |
Other causes in Flagstaff, AZ
- Education 77
- Arts, culture and humanities 58
- Recreation and sports 58
- Religion-related 52
- Human services 48
- Animal-related 24
- Philanthropy, voluntarism and grantmaking foundations 19
- Community improvement and capacity building 16
- Health care 16
- Housing and shelter 12
- Mental health and crisis intervention 12
- Crime and legal-related 9
- Public and societal benefit 9
- International, foreign affairs and national security 7
- Youth development 7
- Science and technology 7
- Food, agriculture and nutrition 6
- Public safety, disaster preparedness and relief 5
- Civil rights, social action and advocacy 4
- Diseases, disorders and medical disciplines 3
- Employment 3
Every nonprofit in Flagstaff, AZ · 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.