Data / Nonprofits / Wyoming / Environment
Environment nonprofits in Wyoming: 169 registered with the IRS
169 environment nonprofits are registered with the IRS in Wyoming, 160 of them 501(c)(3) charities; the 63 that report revenue took in $135.1 million. The most are in Jackson (33), Sheridan (25), Laramie (15). The largest by revenue: National Outdoor Leadership School ($43 million), Holdfast Trust ($25.9 million), Teton Science Schools ($19.6 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| National Outdoor Leadership School | Lander | 501(c)(3) | 1966 | $43 million | $123.8 million | 2025-08 |
| Holdfast Trust | Jackson | 501(c)(4) | 2023 | $25.9 million | $1.43 billion | 2025-12 |
| Teton Science Schools | Jackson | 501(c)(3) | 1974 | $19.6 million | $53.9 million | 2025-05 |
| Jackson Hole Land Trust | Jackson | 501(c)(3) | 1981 | $9.8 million | $42.5 million | 2025-06 |
| Wind River Tribal Buffalo Initiative | Kinnear | 501(c)(3) | 2023 | $6.9 million | $6 million | 2024-12 |
| National Park Friends Alliance | Jackson | 501(c)(3) | 2023 | $3.1 million | $2.8 million | 2025-12 |
| Astoria Park Conservancy | Jackson | 501(c)(3) | 2018 | $2.8 million | $5.1 million | 2024-12 |
| Wyoming Outdoor Council | Lander | 501(c)(3) | 1983 | $2.7 million | $12.2 million | 2024-12 |
| Chalten Trust | Jackson | 501(c)(4) | 2023 | $2 million | $118.4 million | 2025-12 |
| Friends of the Bridger-Teton | Jackson | 501(c)(3) | 2019 | $1.6 million | $404,792 | 2024-12 |
| Protect Our Water Jackson Hole Inc | Wilson | 501(c)(3) | 2015 | $1.4 million | $1.2 million | 2024-12 |
| Wilder Trust | Jackson | 501(c)(4) | 2023 | $1.3 million | $69.5 million | 2025-12 |
| Muley Fanatic Foundation of Wyoming Inc | Green River | 501(c)(3) | 2012 | $1.3 million | $786,517 | 2024-12 |
| Tail Wind Trust | Jackson | 501(c)(4) | 2023 | $1.2 million | $66.7 million | 2025-12 |
| Pilot Hill Inc | Laramie | 501(c)(3) | 2020 | $1 million | $2.4 million | 2025-12 |
| Sheridan Community Land Trust | Sheridan | 501(c)(3) | 2007 | $1 million | $5.9 million | 2025-06 |
| The Jackson Hole One Fly Foundation | Jackson | 501(c)(3) | 1995 | $926,398 | $2 million | 2025-12 |
| Snake River Fund | Jackson | 501(c)(3) | 2003 | $840,484 | $2.6 million | 2025-12 |
| Thunder Basin Grasslands Prairie Eco-System Association | Douglas | 501(c)(3) | 2002 | $746,253 | $326,293 | 2024-12 |
| Jackson Hole Conservation Alliance | Jackson | 501(c)(3) | 1980 | $672,067 | $2.4 million | 2024-12 |
| Permaculture Planet Us Ngo Foundation | Sheridan | 501(c)(3) | 2024 | $637,364 | $2.7 million | 2025-12 |
| Powder River Basin Resource Council | Sheridan | 501(c)(3) | 1981 | $463,151 | $1.3 million | 2024-12 |
| Wyoming Pathways | Lander | 501(c)(3) | 2014 | $453,918 | $145,568 | 2024-12 |
| Jackson Hole Center for Global Affairs Inc | Jackson | 501(c)(3) | 2002 | $406,191 | $286,815 | 2024-12 |
| Friends of the Cheyenne Botanic Garden | Cheyenne | 501(c)(3) | 1994 | $399,608 | $2.6 million | 2025-06 |
| Wyoming Wetlands Society | Jackson | 501(c)(3) | 1988 | $338,401 | $1.3 million | 2023-12 |
| Rendezvous Lands Conservancy | Jackson | 501(c)(3) | 2012 | $334,011 | $5.4 million | 2025-09 |
| International Rocky Mountain Stage Stop Sled Dog Race | Jackson | 501(c)(3) | 1997 | $328,274 | $344,293 | 2024-06 |
| Wyoming Petroleum Foundation | Casper | 501(c)(3) | 2024 | $327,364 | $327,142 | 2024-12 |
| National Association of Abandoned Mine Land Programs | Cheyenne | 501(c)(6) | 2000 | $325,576 | $180,782 | 2025-12 |
| Ray Lovato Recycling Center | Rock Springs | 501(c)(3) | 2019 | $313,243 | $177,065 | 2025-06 |
| Advocates for Multi-Use of Public Lands | Jackson | 501(c)(3) | 2017 | $284,940 | $136,625 | 2025-12 |
| Yellowstone-Teton Clean Cities Inc | Jackson | 501(c)(3) | 2006 | $270,887 | $51,058 | 2024-09 |
| Wyoming Coalition of Local Governments | Lyman | 501(c)(3) | 2022 | $225,934 | $193,035 | 2025-06 |
| Powell Valley Recycling | Powell | 501(c)(3) | 2024 | $204,749 | $384,744 | 2024-12 |
| City of Buffalo Charitable Foundation Inc | Buffalo | 501(c)(3) | 1990 | $197,423 | $1.4 million | 2025-06 |
| Rooted in Cheyenne | Cheyenne | 501(c)(3) | 2018 | $171,328 | $112,967 | 2025-12 |
| Rock Springs Renewal Fund Inc | Rock Springs | 501(c)(3) | 2007 | $155,912 | $48,039 | 2024-12 |
| Uinta Recycling Inc | Evanston | 501(c)(3) | 2004 | $134,088 | $104,575 | 2025-12 |
| North Platte River Foundation Inc | Casper | 501(c)(3) | 2019 | $123,945 | $684,202 | 2025-12 |
| Alliance for Historic Wyoming | Laramie | 501(c)(3) | 2007 | $109,961 | $136,562 | 2025-12 |
| Wilderness Adventures Foundation | Jackson | 501(c)(3) | 2021 | $107,886 | $41,671 | 2025-12 |
| Casper Community Greenhouse Project | Casper | 501(c)(3) | 2014 | $106,525 | $33,507 | 2025-12 |
| Green River Greenbelt Task Force | Green River | 501(c)(3) | 1992 | $96,770 | $311,547 | 2025-09 |
| Wyoming Outdoorsmen | Cody | 501(c)(3) | 2014 | $96,152 | $134,287 | 2024-12 |
| Interstate Council On Water Policy | Cheyenne | 501(c)(3) | 1981 | $91,246 | $148,753 | 2025-06 |
| LSRV Mosquito Control Inc | Baggs | 501(c)(4) | 2024 | $87,971 | $42,453 | 2025-12 |
| Wyoming Solid Waste and Recycling Association | Powell | 501(c)(3) | 1994 | $80,206 | $120,932 | 2025-12 |
| National Historic Trails Center Foundation Inc | Casper | 501(c)(3) | 1997 | $67,140 | $6.2 million | 2025-12 |
| Teton Botanical Garden | Jackson | 501(c)(3) | 2013 | $55,866 | $163,897 | 2025-12 |
| Community Pride Foundation | Torrington | 501(c)(3) | 1997 | $43,389 | $20,944 | 2025-09 |
| Greater Sage Grouse Recovery Founda Tion Inc | Powell | 501(c)(3) | 2025 | $40,000 | $39,974 | 2025-12 |
| The Sinks Canyon Conservancy | Lander | 501(c)(3) | 2001 | $39,680 | $68,125 | 2025-12 |
| Wyoming Natural Resource Foundation | Cheyenne | 501(c)(3) | 1993 | $32,429 | $603,382 | 2025-06 |
| Paul G Etchepare Jr Trust Endwmt Fbo Laramie Beautification Committee | Sheridan | 501(c)(3) | 2022 | $20,807 | $1 million | 2024-12 |
| Casper Mountain Preservation Alliance | Casper | 501(c)(4) | 2024 | $19,020 | $37,026 | 2026-03 |
| Wanna Ride Foundation | Laramie | 501(c)(3) | 2022 | $16,597 | $1 | 2025-12 |
| Albany County Conservancy | Laramie | 501(c)(3) | 2021 | $11,715 | $94,552 | 2025-12 |
| Wyoming Rural Water Foundation | Glenrock | 501(c)(3) | 2012 | $9,410 | $32,652 | 2025-12 |
| Wyoming Alliance for Environmental Education | Jackson | 501(c)(3) | 1996 | $7,653 | $39,010 | 2025-12 |
| Solrio Organization for Climate Change Mitigation Incorporated | Cheyenne | 501(c)(3) | 2014 | $5,600 | $2,491 | 2024-12 |
| Wyoming Project Wild | Alcova | 501(c)(3) | 2015 | $400 | $26,072 | 2024-12 |
| Dubois Anglers & Wildlife Group | Dubois | 501(c)(3) | 2009 | $200 | $12,378 | 2024-12 |
| 307 Mountain Ops | Laramie | 501(c)(3) | 2026 | |||
| Albany County Research Corporation | Laramie | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| American Fuel and Petrochemical Initiative | Cheyenne | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Big Horn Basin Nature & Discovery Center Joint Powers Board | Thermopolis | 501(c)(3) | 2020 | |||
| Bighorn Audubon Society | Sheridan | 501(c)(3) | 2016 | $0 | $0 | 2026-06 |
| Bighorn Climbers Coalition | Ten Sleep | 501(c)(3) | 2026 | |||
| Bighorn Mountain Crawlers Inc | Sheridan | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Blue Water Reef Inc | Cheyenne | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Bryce Canyon Foundation | Sheridan | 501(c)(3) | 2026 | |||
| Campbell County Master Gardeners | Gillette | 501(c)(3) | 2026 | |||
| Chakra Alliance Incorporated | Sheridan | 501(c)(3) | 2026 | |||
| Circle E W Ranch Conservancy Foundation | Jackson | 501(c)(3) | 1996 | $15.3 million | 2024-12 | |
| Citizens United for Responsible Energy Development | Pinedale | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Cleans the Streets | Sheridan | 501(c)(3) | 2024 | |||
| Climate Content Foundation Inc | Wilson | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Cloud Peak Back Country Horsemen | Buffalo | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Construct and Conserve | Casper | 501(c)(3) | 2024 | |||
| Council for the Bighorn Range | Sheridan | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Cultivating Currents | Laramie | 501(c)(3) | 2025 | |||
| Earl Foundation | Powell | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Educational Frontiers Institute | Lander | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Engineer Action Rising | Sheridan | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Friends Of@fossil Fuels | Casper | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Friends of Dubois Badlands | Dubois | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Friends of the Jackson National Fish Hatchery | Jackson | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Friends of the Medicine Bow Rail Trail | Laramie | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Friends of the Red Desert | Lander | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Fundacion Chulengo | Lander | 501(c)(3) | 2026 | |||
| Future Ancestors Rising | Sheridan | 501(c)(3) | 2026 | |||
| Gravel Road Society | Moose | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Great Divide Back Country Horsemen | Dixon | 501(c)(3) | 2026 | |||
| Great Salt Lake Alliance | Jackson | 501(c)(3) | 2025 | |||
| Green Forests Foundation | Sheridan | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Healthy Air Research and Certification Authority Inc | Cheyenne | 501(c)(3) | 2016 | $219,841 | 2024-12 | |
| Impacting Communities United | Sheridan | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| JH Climate Action Collective | Jackson | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Kuju Foundation | Buffalo | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Lander Climate Action Network | Lander | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Laramie Audubon Society | Laramie | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Laramie Basin Land Coalition | Laramie | 501(c)(3) | 2025 | $0 | $0 | 2021-10 |
| Laramie Garden Club | Laramie | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Life After Life Foundation | Gillette | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Listen Foundation | Sheridan | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Main Street Pinedale | Pinedale | 501(c)(3) | 2012 | $0 | $0 | 2026-06 |
| Mary Christine Love Foundation | Sheridan | 501(c)(3) | 2025 | |||
| Mountain Pursuit | Jackson | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Murie Audubon Society | Casper | 501(c)(3) | 1970 | $0 | $0 | 2025-12 |
| Natrona County Master Gardeners | Casper | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Park County Citizens for Sustainability | Cody | 501(c)(3) | 2024 | $0 | $0 | 2024-02 |
| Park County Nordic Ski Association | Cody | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Park County Weed Management Inc | Powell | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Pathfinder Back Country Horsemen of | Mills | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Plastic-Free Tristomo | Sheridan | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Pollinator Pathways of the Tetons | Jackson | 501(c)(3) | 2026 | |||
| Raffles SDG Fund | Cheyenne | 501(c)(3) | 2025 | $0 | $0 | 2025-09 |
| Rafiki Safari Foundation | Dubois | 501(c)(3) | 2026 | |||
| Repurpose Impact | Sheridan | 501(c)(3) | 2026 | |||
| Responsible Growth Coalition Inc | Jackson | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Rocky Mountain Bat Conservancy | Laramie | 501(c)(3) | 2019 | $0 | $0 | 2024-11 |
| Rocky Mountain Region Garden Clubs | Riverton | 501(c)(3) | 2016 | $0 | $0 | 2026-05 |
| Rooted in Laramie | Laramie | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Sage Steppe Wild Foundation | Cora | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Sage and Snow Garden Club Inc | Pinedale | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Saratoga Wyoming Community Projects | Saratoga | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Saving Our Soil Foundation | Sheridan | 501(c)(3) | 2026 | |||
| Scenic Preserve Trust of Teton | Jackson | 501(c)(3) | 1978 | |||
| Scenic Resources Resolution of Johnson County Wyoming | Buffalo | 501(c)(3) | 1997 | |||
| Sea of Stars | Sheridan | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Seed Foundation | Sheridan | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Seeding Reciprocity Co | Buffalo | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Shoreline Harmony Initiative Inc | Sheridan | 501(c)(3) | 2025 | |||
| Shoshone Back Country Horsemen | Powell | 501(c)(3) | 2023 | $0 | $0 | 2026-01 |
| Sinks Canyon Wild | Lander | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Snake River Conservancy Foundation | Moose | 501(c)(3) | 1995 | $9.7 million | 2025-12 | |
| Southeast Wyoming Climbers Coalition | Laramie | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Steppelands Foundation | Riverton | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Sublette Conservation Advocates | Bondurant | 501(c)(3) | 2022 | $0 | $0 | 2025-06 |
| Terawatt Times Foundation | Cheyenne | 501(c)(3) | 2026 | |||
| Teton Wetlands Preservation Fund | Moose | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Thayer Conservation Foundation Inc | Sheridan | 501(c)(3) | 2020 | $0 | $1 | 2025-12 |
| The Roosevelt Alliance | Afton | 501(c)(3) | 2026 | |||
| Timeless Values in Modern Education | Jackson | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Transition Ourway Inc | Buffalo | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| United States Airways Heritage Association | Casper | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Upper Green River Alliance | Pinedale | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Upper North Platte Valley Waterconservation Association | Saratoga | 501(c)(3) | 2007 | $0 | $0 | 2025-10 |
| Viruless Educational Resources | Sheridan | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Walking Softer | Jackson | 501(c)(3) | 2022 | $34.5 million | 2024-12 | |
| Wild West Advocacy Foundation | Cheyenne | 501(c)(3) | 2026 | |||
| Wildland Rangers | Cody | 501(c)(3) | 2002 | $0 | $0 | 2025-02 |
| Willie Neal Environmental Awareness Fund Inc | Wilson | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Wind River Back Country Horsemen | Lander | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Wind River Wilderness Alliance | Pinedale | 501(c)(3) | 2018 | $0 | $0 | 2025-03 |
| Wise | Jackson | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Woodland Conservation Fund | Lander | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Wyldlife for Tomorrow | Jackson | 501(c)(3) | 2026 | |||
| Wyoming Art Education Association | Casper | 501(c)(3) | 2018 | $0 | $0 | 2026-06 |
| Wyoming Blue Skies | Riverton | 501(c)(4) | 2025 | $0 | $0 | 2026-01 |
| Wyoming Energy Co-Op | Powell | 501(c)(3) | 2023 | $0 | $0 | 2023-06 |
| Wyoming Environmental Health Association | Sheridan | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Wyoming Holistic Resource Management | Clearmont | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Wyoming Land and Mineral Owners Association | Cheyenne | 501(c)(4) | 2019 | $0 | $0 | 2025-12 |
| Wyoming Master Gardener Association | Thermopolis | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Wyoming Mining Natural Resource Foundation | Green River | 501(c)(3) | 2016 | $0 | $0 | 2026-03 |
| Wyoming Native Plant Society | Laramie | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Wyoming Range Hunting & Fishing Expo | Kemmerer | 501(c)(3) | 2025 |
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.