Data / Nonprofits / Montana / Environment
Environment nonprofits in Montana: 323 registered with the IRS
323 environment nonprofits are registered with the IRS in Montana, 306 of them 501(c)(3) charities; the 140 that report revenue took in $275 million. The most are in Missoula (48), Bozeman (48), Helena (27). The largest by revenue: American Prairie Foundation ($44.7 million), Yellowstone Forever ($34.5 million), Montana Land Reliance ($28.2 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| American Prairie Foundation | Bozeman | 501(c)(3) | 2001 | $44.7 million | $206.8 million | 2024-12 |
| Yellowstone Forever | Bozeman | 501(c)(3) | 2016 | $34.5 million | $81.9 million | 2026-02 |
| Montana Land Reliance | Helena | 501(c)(3) | 1978 | $28.2 million | $36.9 million | 2025-12 |
| The Trust for Tomorrow | Twin Bridges | 501(c)(3) | 2010 | $10.8 million | $5 million | 2025-09 |
| National Center for Appropriate Technology Inc | Butte | 501(c)(3) | 1977 | $10.1 million | $4.9 million | 2025-09 |
| Flathead Land Trust Inc | Kalispell | 501(c)(3) | 1987 | $9.4 million | $1.8 million | 2024-12 |
| Prickly Pear Land Trust | Helena | 501(c)(3) | 1996 | $8.9 million | $15.4 million | 2024-12 |
| Montana Land Reliance Foundation | Helena | 501(c)(3) | 2010 | $8.6 million | $53.2 million | 2025-12 |
| Greater Yellowstone Coalition Inc | Bozeman | 501(c)(3) | 1984 | $7 million | $27.1 million | 2025-09 |
| Ecology Project International | Missoula | 501(c)(3) | 2001 | $5.9 million | $3 million | 2024-12 |
| The Big Sky Community Organization | Big Sky | 501(c)(3) | 1998 | $5.1 million | $29.4 million | 2025-06 |
| Backcountry Hunters and Anglers | Missoula | 501(c)(3) | 2006 | $5.1 million | $2.8 million | 2025-12 |
| Yellowstone To Yukon Conservation Initiative | Bozeman | 501(c)(3) | 2000 | $4.6 million | $7.6 million | 2024-12 |
| Five Valleys Land Trust Inc | Missoula | 501(c)(3) | 1972 | $4.4 million | $15.4 million | 2025-12 |
| Montana Wilderness Association Inc | Helena | 501(c)(3) | 1978 | $4 million | $5.7 million | 2025-09 |
| Climate Conservation | Bozeman | 501(c)(3) | 2011 | $3.8 million | $5.1 million | 2025-06 |
| Gallatin Valley Land Trust | Bozeman | 501(c)(3) | 1994 | $3.7 million | $16 million | 2025-06 |
| Blackfoot Challenge Inc | Ovando | 501(c)(3) | 1995 | $3.4 million | $6.6 million | 2024-12 |
| Headwaters Economics Inc | Bozeman | 501(c)(3) | 2006 | $3.1 million | $4.2 million | 2025-12 |
| Glacier Institute Inc | Columbia FLS | 501(c)(3) | 1985 | $2.6 million | $4.1 million | 2025-12 |
| Honor the Earth | Colstrip | 501(c)(3) | 2015 | $2.5 million | $3.5 million | 2025-06 |
| Clark Fork Coalition | Missoula | 501(c)(3) | 1986 | $2.5 million | $4.5 million | 2024-12 |
| Montana Environmental Information Center Inc | Helena | 501(c)(3) | 1978 | $2.4 million | $1.3 million | 2024-12 |
| Wilderness Land Trust | Helena | 501(c)(3) | 1997 | $2.3 million | $11.5 million | 2025-06 |
| Climate Ride Inc | Missoula | 501(c)(3) | 2010 | $2.1 million | $4.3 million | 2024-12 |
| Adventurers and Scientists for Conservation | Bozeman | 501(c)(3) | 2014 | $2 million | $2 million | 2026-03 |
| Gallatin River Task Force | Big Sky | 501(c)(3) | 2005 | $2 million | $1.1 million | 2025-12 |
| Home Resource | Missoula | 501(c)(3) | 2005 | $1.8 million | $3.3 million | 2025-06 |
| Heart of the Rockies Initiative | Missoula | 501(c)(3) | 2014 | $1.8 million | $888,736 | 2024-12 |
| Headwaters Resource Conservation and Development Area Inc | Butte | 501(c)(3) | 1994 | $1.7 million | $6.2 million | 2024-12 |
| Whitefish Legacy Partners Inc | Whitefish | 501(c)(3) | 2004 | $1.7 million | $4.4 million | 2024-12 |
| Swan Valley Connections | Condon | 501(c)(3) | 1997 | $1.6 million | $1.9 million | 2025-12 |
| Moonlight Community Foundation | Big Sky | 501(c)(3) | 2014 | $1.6 million | $1.7 million | 2026-02 |
| Montana Audubon | Helena | 501(c)(3) | 1983 | $1.4 million | $4.3 million | 2025-09 |
| Ranchers Stewardship Alliance Inc | Malta | 501(c)(3) | 2009 | $1.4 million | $228,442 | 2024-12 |
| Bitter Root Land Trust Inc | Hamilton | 501(c)(3) | 1998 | $1.4 million | $3.7 million | 2024-12 |
| Heart of the Rockies Foundation | Missoula | 501(c)(3) | 2023 | $1.4 million | $2.3 million | 2024-12 |
| Park County Environmental Council | Livingston | 501(c)(3) | 1994 | $1.3 million | $970,837 | 2025-12 |
| Greater Gallatin Watershed Council | Bozeman | 501(c)(3) | 2005 | $1.3 million | $1.6 million | 2024-12 |
| Bitter Root Resource Conservation and Development Area Incorporated | Hamilton | 501(c)(3) | 1993 | $1.3 million | $271,840 | 2025-09 |
| Ruby Habitat Foundation | Sheridan | 501(c)(3) | 2004 | $1.2 million | $20.4 million | 2024-12 |
| Montana Natural History Center Inc | Missoula | 501(c)(3) | 1992 | $1.1 million | $1.9 million | 2025-12 |
| Montana Association of Conservation Districts | Helena | 501(c)(3) | 1972 | $1.1 million | $1 million | 2024-12 |
| Vantage Earth Foundation Inc | Bozeman | 501(c)(3) | 2025 | $954,062 | $939,018 | 2025-12 |
| Friends of Beaver Creek Park Incorporated | Havre | 501(c)(3) | 2013 | $927,409 | $1.1 million | 2025-12 |
| Wilderness Watch Inc | Missoula | 501(c)(3) | 1993 | $897,431 | $4.3 million | 2024-12 |
| Montana Conservation Voters Education Fund | Helena | 501(c)(3) | 2000 | $871,159 | $1 million | 2024-12 |
| Environmental Health Sciences | Bozeman | 501(c)(3) | 2022 | $869,169 | $1.5 million | 2024-12 |
| Montana Freshwater Partners Inc | Livingston | 501(c)(3) | 2012 | $829,069 | $3.8 million | 2025-12 |
| Western Sustainability Exchange | Livingston | 501(c)(3) | 1995 | $798,902 | $390,267 | 2024-12 |
| Project Wet Foundation | Bozeman | 501(c)(3) | 2004 | $711,201 | $615,569 | 2025-12 |
| Madison River Foundation Inc | Ennis | 501(c)(3) | 2003 | $696,169 | $567,109 | 2025-12 |
| Alternative Energy Resources Organization | Helena | 501(c)(3) | 1975 | $692,132 | $106,638 | 2025-12 |
| Beartooth Resource Conservation and Development Area | Joliet | 501(c)(3) | 1990 | $690,003 | $3.1 million | 2024-12 |
| Big Hole Watershed Committee | Divide | 501(c)(3) | 2005 | $687,647 | $130,887 | 2024-12 |
| Yellowstone River Parks Association Inc | Billings | 501(c)(3) | 1996 | $660,074 | $7.5 million | 2024-12 |
| People and Carnivores Inc | Bozeman | 501(c)(3) | 1993 | $642,961 | $1.6 million | 2025-09 |
| Sun River Watershed | Great Falls | 501(c)(3) | 1999 | $611,261 | $106,621 | 2025-12 |
| Stillwater Valley Watershed Council | Absarokee | 501(c)(3) | 2011 | $602,086 | $364,031 | 2024-12 |
| Great Burn Study Group | Missoula | 501(c)(3) | 2003 | $565,929 | $459,621 | 2024-12 |
| Bighorn River Alliance | Billings | 501(c)(3) | 1995 | $555,971 | $970,678 | 2025-12 |
| Yellowstone Wildlife Sanctuary | Red Lodge | 501(c)(3) | 1986 | $527,018 | $1 million | 2024-12 |
| Friends of Missoula Parks Inc | Missoula | 501(c)(3) | 2004 | $487,865 | $795,565 | 2025-12 |
| Double Arrow Ranch Land Owners Association | Seeley Lake | 501(c)(4) | 1974 | $461,129 | $1.2 million | 2025-11 |
| Montanas Outdoor Legacy Foundation | Helena | 501(c)(3) | 2000 | $458,233 | $948,917 | 2024-12 |
| Bitterroot Water Partnership | Hamilton | 501(c)(3) | 2004 | $456,629 | $156,355 | 2024-12 |
| Whitefish Lake Institute | Whitefish | 501(c)(3) | 2005 | $448,624 | $2.2 million | 2024-12 |
| Yellow Dog Community and Conservation Foundation | Bozeman | 501(c)(3) | 2017 | $442,004 | $266,985 | 2025-12 |
| Yaak Valley Forest Council | Troy | 501(c)(3) | 1999 | $410,680 | $149,525 | 2024-12 |
| Cottonwood Environmental Law Center | Bozeman | 501(c)(3) | 2010 | $408,399 | $74,827 | 2024-12 |
| Buffalo Field Campaign | W Yellowstone | 501(c)(3) | 1994 | $403,022 | $860,730 | 2025-12 |
| Mt Mountain Mamas | Bozeman | 501(c)(3) | 2019 | $387,130 | $22,594 | 2025-09 |
| Montana Wilderness School | Bozeman | 501(c)(3) | 2014 | $382,438 | $129,749 | 2025-09 |
| Billings Trailnet | Billings | 501(c)(3) | 2002 | $378,246 | $1.1 million | 2024-12 |
| Montana Raptor Conservation Center | Bozeman | 501(c)(3) | 1991 | $376,283 | $2.6 million | 2025-12 |
| Alliance for the Wild Rockies Inc | Missoula | 501(c)(3) | 1989 | $364,633 | $63,106 | 2024-12 |
| Big Sky Sno Inc | Big Sky | 501(c)(3) | 2020 | $362,835 | $305,188 | 2025-12 |
| Climate Smart Missoula | Missoula | 501(c)(3) | 2020 | $350,202 | $348,027 | 2025-12 |
| Montana Watershed Coordination Council Inc | Helena | 501(c)(3) | 2013 | $350,153 | $26,187 | 2024-12 |
| Wildlife Ecology Institute | Helena | 501(c)(3) | 2016 | $327,259 | $358,945 | 2024-12 |
| Back Country Horsemen of America | Columbia FLS | 501(c)(3) | 2009 | $324,349 | $548,670 | 2025-12 |
| Grow Wild Inc | Bozeman | 501(c)(3) | 2014 | $300,418 | $150,632 | 2024-12 |
| Flathead Lakers Inc | Polson | 501(c)(3) | 1993 | $291,237 | $356,959 | 2024-12 |
| Montana Conservation Society | Kalispell | 501(c)(4) | 2024 | $285,400 | $22,527 | 2024-12 |
| Glacier-Two Medicine Alliance Inc | E Glacier PK | 501(c)(3) | 2011 | $277,805 | $401,655 | 2024-12 |
| Center for Science in Public Participation | Bozeman | 501(c)(3) | 1997 | $274,535 | $1.3 million | 2025-12 |
| Headwaters Trail System | Three Forks | 501(c)(3) | 2014 | $269,640 | $1 million | 2025-12 |
| Absaroka Beartooth Wilderness Foundation | Red Lodge | 501(c)(3) | 2010 | $258,977 | $151,456 | 2024-12 |
| Montana Weed Control Association | Twin Bridges | 501(c)(3) | 2006 | $233,599 | $275,898 | 2025-06 |
| Flathead Rivers Alliance | Whitefish | 501(c)(3) | 2020 | $213,734 | $133,544 | 2025-12 |
| Wild Montana Action Fund | Helena | 501(c)(4) | 2021 | $207,981 | $160,580 | 2025-09 |
| Beaverhead Trails Coalition Inc | Dillon | 501(c)(3) | 2013 | $198,269 | $762,664 | 2024-12 |
| Flathead Audubon Society | Kalispell | 501(c)(3) | 1996 | $196,611 | $513,340 | 2025-12 |
| Madison Valley Ranchlands Group Inc | Ennis | 501(c)(3) | 1999 | $189,994 | $305,868 | 2025-12 |
| Centennial Valley Association Inc | Dillon | 501(c)(3) | 2007 | $185,733 | $50,908 | 2025-12 |
| Bozeman Bike Kitchen | Bozeman | 501(c)(3) | 2007 | $180,781 | $239,993 | 2025-12 |
| Ohara Commons and Sustainability Center Inc | Hamilton | 501(c)(3) | 2015 | $176,819 | $24,729 | 2024-12 |
| Ravenwood Outdoor Learning Center | Whitefish | 501(c)(3) | 2002 | $173,523 | $15,248 | 2024-12 |
| Friends of Park County Inc | Livingston | 501(c)(3) | 2021 | $168,037 | $172,007 | 2025-12 |
| Families for A Livable Climate | Missoula | 501(c)(3) | 2023 | $149,607 | $53,890 | 2025-12 |
| The Watershed Education Network | Missoula | 501(c)(3) | 2004 | $149,509 | $204,686 | 2024-12 |
| Watershed Restoration Coalition of the Upper Clark Fork | Deer Lodge | 501(c)(3) | 2008 | $143,891 | $15,769 | 2024-12 |
| Montana Renewable Energy Association | Helena | 501(c)(3) | 2002 | $140,525 | $118,863 | 2025-12 |
| Upper Missouri Watershed Alliance Inc | Helena | 501(c)(3) | 2014 | $137,367 | $241,340 | 2025-12 |
| Society for Conservation Gis Inc | Kalispell | 501(c)(3) | 1999 | $134,850 | $427,248 | 2025-09 |
| Save Farmland | Whitefish | 501(c)(3) | 2022 | $116,729 | $2.4 million | 2024-12 |
| Citizens for Balanced Use | Gallatin Gtwy | 501(c)(3) | 2006 | $113,663 | $151,197 | 2024-12 |
| Meagher County Stewardship Council | WHT SPHR SPGS | 501(c)(3) | 2020 | $111,755 | $28,208 | 2025-12 |
| Native Ecoysystems Council | Willow Creek | 501(c)(3) | 1992 | $111,300 | $39,690 | 2025-12 |
| Stewards of the Swan Valley | Condon | 501(c)(3) | 2022 | $110,351 | $312,273 | 2024-12 |
| Montana Urban and Community Forestry Association | Kalispell | 501(c)(3) | 2016 | $108,571 | $58,250 | 2025-12 |
| Clark Fork River Market | Missoula | 501(c)(5) | 2014 | $103,478 | $34,234 | 2024-12 |
| Gallatin Valley Snowmobile Association | Bozeman | 501(c)(3) | 2023 | $103,270 | $126,498 | 2025-12 |
| Conservation Congress | Great Falls | 501(c)(3) | 2004 | $99,846 | $57,150 | 2024-12 |
| Clearwater Resource Council | Seeley Lake | 501(c)(3) | 2004 | $97,236 | $67,429 | 2025-12 |
| Montana Discovery Foundation | Helena | 501(c)(3) | 1999 | $93,545 | $26,388 | 2024-12 |
| Lower Clark Fork Watershed Group | Thompson FLS | 501(c)(3) | 2004 | $85,361 | $52,859 | 2024-12 |
| Save the Yellowstone Grizzly | Livingston | 501(c)(3) | 2018 | $84,638 | $41,343 | 2025-12 |
| Sportsmen for Fish and Wildlife Montana | Missoula | 501(c)(3) | 2011 | $75,757 | $105,098 | 2024-12 |
| Back County Horsemen of Montana | Columbia Falls | 501(c)(3) | 2014 | $74,793 | $89,469 | 2025-12 |
| Swan View Coalition Inc | Kalispell | 501(c)(3) | 2000 | $67,673 | $257,665 | 2025-12 |
| Whitebark Pine Ecosystem Foundation | Missoula | 501(c)(3) | 2001 | $66,234 | $72,893 | 2024-12 |
| Amani for Africa USA Foundation | Billings | 501(c)(3) | 2005 | $65,042 | $109,414 | 2025-12 |
| Citizens Technical Environmental Committee Inc | Butte | 501(c)(3) | 1995 | $62,953 | $90 | 2025-09 |
| Soil Cycle | Missoula | 501(c)(3) | 2019 | $62,518 | $8,207 | 2025-12 |
| Onegreenthing | Bozeman | 501(c)(3) | 2021 | $59,115 | $41,496 | 2025-12 |
| Rocky Mountain Front Weed Roundtable Inc | Choteau | 501(c)(3) | 2010 | $52,180 | $56,354 | 2024-12 |
| Two Percent for Conservation | Manhattan | 501(c)(3) | 2015 | $42,285 | $1,981 | 2025-06 |
| Thompson Chain of Lakes Stewardship Coalition | Libby | 501(c)(3) | 2022 | $41,499 | $18,078 | 2025-09 |
| Glendive Recycles Our Waste Inc | Glendive | 501(c)(3) | 2020 | $36,864 | $867,973 | 2025-12 |
| Ponderosa Snow Warriors | Lincoln | 501(c)(3) | 2010 | $31,659 | $155,749 | 2026-06 |
| Gateway Conservation Alliance | Gallatin Gtwy | 501(c)(3) | 2023 | $30,725 | $20,619 | 2025-12 |
| Bitterrooters for Planning | Hamilton | 501(c)(3) | 2024 | $5,200 | $11,777 | 2024-12 |
| Blackfeet Indian Land Conservation Trust Corporation | Browning | 501(c)(3) | 2005 | $5,000 | $552,389 | 2025-12 |
| Project Green of Montana Inc | Butte | 501(c)(3) | 1999 | $4,508 | $145,636 | 2025-12 |
| Field Data Technologies Inc | Essex | 501(c)(3) | 2021 | $3,899 | $499 | 2024-12 |
| Bridger Canyon Historical Preservation Association | Bozeman | 501(c)(3) | 2005 | $2,804 | $14,845 | 2025-12 |
| Affta Fisheries Fund | Bozeman | 501(c)(3) | 2015 | $1,589 | $82,070 | 2025-12 |
| Regenitech Fund Corpp | Whitefish | 501(c)(3) | 2019 | $1,537 | $110,065 | 2024-12 |
| Brennan-S Wave | Missoula | 501(c)(3) | 2005 | $79 | $44,799 | 2024-12 |
| 350 Montana | Missoula | 501(c)(3) | 2024 | |||
| Access Alliance Inc | Great Falls | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Access Panam | Missoula | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Alliance for Rural Montana | Glasgow | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Alpine Ecosystems Research Institute | Livingston | 501(c)(3) | 2024 | $0 | $0 | 2026-01 |
| American Solar Grazing and Growing Association | Clancy | 501(c)(3) | 2025 | |||
| Anaconda Conservation Coalition | Anaconda | 501(c)(3) | 2025 | |||
| Art Higgins Memorial Black Eagle Park Inc | Black Eagle | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Atlanticus Foundation | Missoula | 501(c)(3) | 2026 | |||
| Back Country Horsemen Inc | Columbia FLS | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Back Country Horsemen of America | Missoula | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Bibler Legacy Foundation Inc | Kalispell | 501(c)(3) | 2025 | |||
| Big Blackfoot Riverkeeper Inc | Greenough | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Big Sky Recycling Center Inc | Big Sky | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Big Wild Advocates | Emigrant | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Biomimicry Collaborative | Helena | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Bitterroot Clean Water Alliance Inc | Darby | 501(c)(3) | 2024 | $0 | $9,977 | 2023-12 |
| Bitterroot River Protection Association Inc | Hamilton | 501(c)(3) | 2002 | $0 | $0 | 2023-12 |
| Blackfoot River Community | Bonner | 501(c)(3) | 2026 | |||
| Blankenship Firefighters Association | Columbia FLS | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Botanic Garden Missoula | Missoula | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Bozeman Citizens Climate Lobby | Bozeman | 501(c)(4) | 2018 | $0 | $0 | 2025-12 |
| Bright N Beautiful | Billings | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Brovold Community Orchard | Missoula | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Butte Post No 1448 Veterans of Foreign Wars of the United States | Butte | 501(c)(19) | 2025 | $0 | $0 | 2024-12 |
| Cabinet Resource Group | Heron | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Carlton Protection Trust | Lolo | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Carnicom Institute | Alberton | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Cataract Water Users Association | Harrison | 501(c)(12) | 2018 | $0 | $0 | 2025-12 |
| Citizens for A Weed Free Future Inc | Missoula | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Citizens for Clean Energy Inc | Great Falls | 501(c)(3) | 2014 | $0 | $0 | 2026-02 |
| Clark Fork River Technical Assistance Committee | Deer Lodge | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Clarks Fork Yellowstone Partnership | Silesia | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Climate North Star | Missoula | 501(c)(4) | 2026 | $0 | $0 | 2024-12 |
| Climate North Star Outreach Fund | Missoula | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Climate Smart Glacier Country | Whitefish | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Community Eco Living | Bozeman | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Concerned Citizens of the Valley | Helena | 501(c)(4) | 2025 | $0 | $0 | 2025-12 |
| Conservation Impact Fund | Bozeman | 501(c)(3) | 2026 | |||
| Dillon Community Coalition | Dillon | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Dillon Garden Club | Dillon | 501(c)(3) | 2014 | $0 | $0 | 2025-05 |
| Dont Be A Jerk | Bozeman | 501(c)(3) | 2023 | $54,463 | 2025-12 | |
| Earth Restoration Project Inc | Florence | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| East Back Country Horseman | Conrad | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Eastern Montana Wildlife Conservati On Corporation | Miles City | 501(c)(3) | 2026 | |||
| Echo Lake Trails Association | Anaconda | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Ecosystem Management Research Institute | Seeley Lake | 501(c)(3) | 2000 | $0 | $0 | 2024-12 |
| Egan Slough Community | Kalispell | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Eureka Riverwalk Foundation Inc | Eureka | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Family Forestry Expo C/o Rod Leese | Kalispell | 501(c)(3) | 2024 | |||
| Flathead Wildlife Inc | Kalispell | 501(c)(3) | 2012 | $0 | $0 | 2024-12 |
| Flathead-Lolo-Bitterroot Citizen Task Force | Missoula | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Forest Stewardship Foundation | Libby | 501(c)(3) | 1993 | $0 | $0 | 2025-12 |
| Four Corners Community Foundation | Bozeman | 501(c)(3) | 2005 | $1.7 million | 2025-12 | |
| Friends of Lake Five Inc | Kalispell | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Friends of Madison Buffalo Jump | Bozeman | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Friends of Montana Streams and Rivers | West Glacier | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of Red Rock Lakes National Wildlife Refuge | Belgrade | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Friends of Thompson Park | Butte | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Friends of Two Rivers Inc | Milltown | 501(c)(3) | 2003 | $0 | $0 | 2025-08 |
| Friends of the Bitterroot Inc | Hamilton | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Friends of the Lee Metcalf National Wildlife Refuge | Stevensville | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Friends of the Missouri Breaks Monument | Helena | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Friends of the Teton River | Fort Benton | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Future West | Bozeman | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Gallatin County Community Coalition | Bozeman | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Gallatin Valley Back Country Horsemen | Bozeman | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Gallatin Water Trust | Bozeman | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Gallatin Yellowstone Wilderness Alliance | Bozeman | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Glacier National Park Associates Inc | Kalispell | 501(c)(3) | 1994 | $0 | $0 | 2025-12 |
| Glendive Community Garden | Glendive | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Go Zero Inc | Bozeman | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Gold Country Montana Master Gardener Association | Helena | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Great Divide Orchid Society | East Helena | 501(c)(3) | 2016 | $173,059 | 2025-12 | |
| Harlem Civic Association | Harlem | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Indigenous Conservation Leadership | Hardin | 501(c)(3) | 2026 | |||
| Jefferson River Watershed Council | Deer Lodge | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Keep Cascade County Beautiful | Cascade | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Keep Miles City Beautiful | Miles City | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Keeping Frenchtown | Frenchtown | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Kila Smith Lake Communitydevelopment Coalition | Kila | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Kootenai Forest Stakeholderscoalition | Plains | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Kootenai River Network | Libby | 501(c)(3) | 1996 | $0 | $0 | 2025-12 |
| Lake Helena Watershed Group | Helena | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Laurel Garden Club | Billings | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Libby Dam Cooperative Association Inc | Libby | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Libby Outdoor Recreation Association | Libby | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Little Bitteroot Lake Association Inc | Marion | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Little Dry Water Users Association | Angela | 501(c)(12) | 2022 | $0 | $0 | 2025-12 |
| Lolo Watershed Group | Lolo | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Mile High Backcountry Horsemen | Anaconda | 501(c)(3) | 2019 | $0 | $0 | 2026-01 |
| Mill Creek Irrigation Company | Anaconda | 501(c)(12) | 2019 | $0 | $0 | 2025-12 |
| Mining City Trail Riders Inc | Butte | 501(c)(3) | 2002 | $0 | $0 | 2026-04 |
| Mission Mountain Audubon Society | Polson | 501(c)(3) | 2002 | $0 | $0 | 2025-06 |
| Mission Valley Back Country Horsemen Inc | Ronan | 501(c)(4) | 2012 | $0 | $0 | 2025-12 |
| Mission Valley Master Gardener Asso Ciation | Polson | 501(c)(3) | 2026 | |||
| Missouri River Natural Resources Committee | Helena | 501(c)(3) | 1998 | $0 | $0 | 2025-06 |
| Montana Backcountry Alliance | Missoula | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Montana Cannabis Magazine | Bozeman | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Montana Conservation Elders | Helena | 501(c)(3) | 2023 | $65,995 | 2025-12 | |
| Montana Federation of Garden Clubs Inc | Corvallis | 501(c)(3) | 2000 | $0 | $0 | 2026-05 |
| Montana Fish and Wildlife Conservation Trust | Helena | 501(c)(3) | 2003 | |||
| Montana Fishing Outfitters Conservation Fund | Twin Bridges | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Montana Interfaith Power and Light | Bozeman | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Montana Natural Resources Youth Camp Inc | Missoula | 501(c)(3) | 1993 | $0 | $0 | 2025-12 |
| Montana Rivers Inc | Bozeman | 501(c)(3) | 1996 | $0 | $0 | 2025-12 |
| Montana State Bass Federation | Missoula | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Montana Tree Farm System | Missoula | 501(c)(3) | 2002 | $0 | $0 | 2024-12 |
| Montana Wetlands and Waterfowl | Butte | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Montanans for Affordable Energy | Bozeman | 501(c)(3) | 2026 | |||
| Montanical Garden | Bozeman | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Mountain Bluebird Trails Inc | Ronan | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| National Organization To Save Flathead Lake | Bigfork | 501(c)(4) | 2002 | $0 | $0 | 2025-12 |
| Native Conservation Initiative | Browning | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Nature Rising | Clinton | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Nishinaan Aki | Dupuyer | 501(c)(3) | 2026 | |||
| North Fork Preservation Association Inc | Polebridge | 501(c)(3) | 2014 | $0 | $0 | 2025-07 |
| North Fork Trails Association | Polebridge | 501(c)(3) | 2022 | $1,446 | 2024-12 | |
| North Powell County Preservation Association | Ovando | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| North Shore Water Alliance Inc Fka Flathead Waterkeeper Inc | Somers | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Northern Rockies Nature Journaling | Florence | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Northern Rocky Mountain Grotto | Bozeman | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Northwest Montana Lookout Association | Kalispell | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Orion the Hunters Institute | Helena | 501(c)(3) | 1996 | $0 | $0 | 2025-12 |
| Our Montana Inc | Billings | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Outdoor Community Partners | Whitefish | 501(c)(3) | 2023 | $0 | $34,661 | 2025-12 |
| Outlaw Foundation | Big Sky | 501(c)(3) | 2024 | $1 | 2024-12 | |
| Park County Land Trust | Livingston | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Paws Up Ranch Foundation | Missoula | 501(c)(3) | 2024 | |||
| Peel Family Foundation | Laurel | 501(c)(3) | 2025 | $100,024 | 2024-12 | |
| Pioneer Mountain Education Foundation | Dillon | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Polar Oceans Research Group | Sheridan | 501(c)(3) | 2000 | $0 | $0 | 2025-09 |
| Ponderosa Initiative for Nature and Education | St Ignatius | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Protect the Clearwater | Missoula | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Protect the Gallatin River | Gallatin Gtwy | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Pump Track Locator | Kalispell | 501(c)(3) | 2025 | |||
| Range Club | Bozeman | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Rattlesnake Creek Watershed Group Incorporated | Missoula | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Ravalli County Fish and Wildlife Association | Corvallis | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Ravalli County Recycling Inc | Hamilton | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Recycle Hi-Line | Havre | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Recycle Montana Inc | Winifred | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Red Lodge Proud & Beautiful | Red Lodge | 501(c)(3) | 2026 | |||
| Resilient Helena | Helena | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Responsible Flathead Planning | West Glacier | 501(c)(3) | 2026 | |||
| Rogers Lake Association | Kila | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Rosewill Conservation | Plentywood | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Rotuma Project | Missoula | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Sage Gardeners | Bozeman | 501(c)(3) | 2011 | $0 | $0 | 2025-09 |
| Sapphire Coalition | Corvallis | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Sapphire Foundation Inc | Seeley Lake | 501(c)(3) | 2005 | $612,140 | 2025-12 | |
| Save the Bull Trout | Missoula | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Save the Range | Ekalaka | 501(c)(3) | 2026 | |||
| Saws N Claws | Florence | 501(c)(3) | 2024 | |||
| Seachange Ocean Solutions | Bozeman | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Selway-Pintler Wilderness Back Country Horsemen | Hamilton | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Smith River Habitat Project | Clancy | 501(c)(3) | 2005 | $0 | $0 | 2024-12 |
| Southwest Montana Climbers Coalition | Lewistown | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Sun River Valley Ditch Co | Vaughn | 501(c)(12) | 2017 | $0 | $0 | 2025-12 |
| Sustainable Business Council | Missoula | 501(c)(3) | 2008 | $0 | $0 | 2024-06 |
| Swan Lakers | Bigfork | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Swayze Water Line Association | Sunburst | 501(c)(12) | 2019 | $0 | $0 | 2025-12 |
| Systems for Environmental Management | Missoula | 501(c)(3) | 1978 | $380,533 | 2025-12 | |
| Tangle Free Montana | Missoula | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Ten Lakes Snomobile Club Inc | Eureka | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| The Crazy Peak Foundation Inc | Livingston | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Thompson River Partnership | Polson | 501(c)(3) | 2025 | |||
| Toole County Garden Club | Shelby | 501(c)(3) | 2017 | $0 | $0 | 2026-03 |
| Trap Free Montana Public Lands | Hamilton | 501(c)(4) | 2017 | $0 | $0 | 2025-12 |
| Trees 4 Tomorrow | Billings | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Upper Clear Creek Group | Lindsay | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Water for Flatheads Future | Kalispell | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Well Done Foundation Inc | Bozeman | 501(c)(3) | 2021 | $1.3 million | 2025-12 | |
| Well Done Foundation Public Charity | Shelby | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| West Gallatin Canal Co | Gallatin Gtwy | 501(c)(12) | 2014 | $0 | $0 | 2025-12 |
| Western Association of Food and Drug Officials | Great Falls | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Western Montana Climbers Coalition | Missoula | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| Western Montana Mycological Assoc | Missoula | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Western Wildlife Foundation | Missoula | 501(c)(3) | 2025 | $0 | $1 | 2024-12 |
| Wildwest Institute | Missoula | 501(c)(3) | 1994 | $0 | $0 | 2025-12 |
| Woods Not Waste | Missoula | 501(c)(3) | 2020 | $0 | $0 | 2023-12 |
| Yellowstone Voices Rising | Bozeman | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Youth Trapper Camp Inc | Gildford | 501(c)(3) | 2003 | $0 | $0 | 2026-06 |
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.