Data / Nonprofits / Colorado / Environment
Environment nonprofits in Colorado: 859 registered with the IRS
859 environment nonprofits are registered with the IRS in Colorado, 815 of them 501(c)(3) charities; the 355 that report revenue took in $629.5 million. The most are in Denver (116), Boulder (69), Fort Collins (33). The largest by revenue: Denver Botanic Garden Inc ($52.1 million), Colorado Open Lands ($51.3 million), Global Greengrants Fund Inc ($35 million).
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The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Denver Botanic Garden Inc | Denver | 501(c)(3) | 1952 | $52.1 million | $25 million | 2025-12 |
| Colorado Open Lands | Lakewood | 501(c)(3) | 1982 | $51.3 million | $14 million | 2025-03 |
| Global Greengrants Fund Inc | Boulder | 501(c)(3) | 2002 | $35 million | $54.1 million | 2025-06 |
| Colorado Clean Energy Fund | Denver | 501(c)(3) | 2019 | $34.8 million | $175.8 million | 2025-12 |
| Water Research Foundation | Denver | 501(c)(3) | 1967 | $24.3 million | $62.6 million | 2025-12 |
| Environment America Inc | Denver | 501(c)(4) | 2007 | $15.1 million | $76.5 million | 2025-06 |
| Western Conservation Foundation | Denver | 501(c)(3) | 2005 | $14.6 million | $8.1 million | 2024-12 |
| Mesa County Land Conservancy Inc | Grand JCT | 501(c)(3) | 1981 | $12.4 million | $6 million | 2025-04 |
| Eco-Cycle Inc | Boulder | 501(c)(3) | 1978 | $11 million | $8.7 million | 2025-06 |
| Colorado Youth Corps Association | Denver | 501(c)(3) | 2000 | $10.9 million | $3.8 million | 2025-12 |
| Conservation Lands Foundation | Durango | 501(c)(3) | 2007 | $10.2 million | $11.2 million | 2025-12 |
| Outward Bound Inc | Boulder | 501(c)(3) | 1964 | $9.8 million | $15.8 million | 2024-12 |
| Greenlatinos | Boulder | 501(c)(3) | 2009 | $8.7 million | $3.2 million | 2024-12 |
| Colorado Water Trust Inc | Denver | 501(c)(3) | 2002 | $7.6 million | $8.3 million | 2024-12 |
| Denver Botanic Gardens Endowment Inc | Denver | 501(c)(3) | 1992 | $7.5 million | $54.2 million | 2024-12 |
| Keystone Center | Keystone | 501(c)(3) | 1975 | $7.4 million | $8.1 million | 2025-12 |
| Colorado Outdoor Education Center | Florissant | 501(c)(3) | 1973 | $7.3 million | $15.2 million | 2024-12 |
| Protect Our Winters | Boulder | 501(c)(3) | 2007 | $6.7 million | $7.3 million | 2024-12 |
| Environment America Research and Policy Center Inc | Denver | 501(c)(3) | 2008 | $6.4 million | $14.4 million | 2025-06 |
| Aspen Center for Environmental Studies | Aspen | 501(c)(3) | 1969 | $6.3 million | $39.6 million | 2025-10 |
| River Network | Boulder | 501(c)(3) | 1992 | $6.1 million | $3.5 million | 2025-09 |
| Resource Central | Boulder | 501(c)(3) | 1980 | $5.5 million | $5.8 million | 2025-12 |
| The Foundation for Natural Resources and Energy Law | Broomfield | 501(c)(3) | 1959 | $5.2 million | $26.4 million | 2024-12 |
| Southern Plains Land Trust | Lamar | 501(c)(3) | 1999 | $5 million | $4.5 million | 2024-12 |
| High Country News | Paonia | 501(c)(3) | 1969 | $4.8 million | $2.8 million | 2025-09 |
| Western Landowners Alliance | Denver | 501(c)(3) | 2014 | $4.6 million | $3.5 million | 2025-12 |
| Ecosystem Services Market Consortium | Thornton | 501(c)(3) | 2021 | $4.5 million | $4.6 million | 2025-12 |
| Conservation Colorado Education Fund | Denver | 501(c)(3) | 1991 | $4.3 million | $6.9 million | 2025-09 |
| Denver Urban Gardens | Denver | 501(c)(3) | 1985 | $4.1 million | $1.6 million | 2025-12 |
| Iclei Local Governments for Sustainability USA Inc | Denver | 501(c)(3) | 1991 | $4.1 million | $2.2 million | 2024-12 |
| Revision International | Denver | 501(c)(3) | 2008 | $4 million | $5.9 million | 2024-12 |
| Garden of the Gods Foundation | Colorado SPGS | 501(c)(3) | 2011 | $3.9 million | $15.3 million | 2025-12 |
| Colorado Outward Bound School | Leadville | 501(c)(3) | 1963 | $3.9 million | $5.5 million | 2024-12 |
| Aspen Valley Land Trust | Carbondale | 501(c)(3) | 1967 | $3.7 million | $18 million | 2024-12 |
| Coalitions and Collaboratives Inc | Denver | 501(c)(3) | 2015 | $3.7 million | $1.1 million | 2024-12 |
| Playa Lakes Joint Venture | Longmont | 501(c)(3) | 2003 | $3.6 million | $1.6 million | 2024-12 |
| Wild Bear Nature Center | Nederland | 501(c)(3) | 1998 | $3.6 million | $11 million | 2025-09 |
| National Grazing Lands Coalition | Castle Pines | 501(c)(3) | 2014 | $3.5 million | $1.5 million | 2024-12 |
| Confluence Center of Colorado Inc | Grand JCT | 501(c)(3) | 2023 | $3.5 million | $7.1 million | 2025-12 |
| Colorado Garden Show Inc | Lakewood | 501(c)(3) | 1999 | $3.5 million | $12.9 million | 2025-03 |
| Solar Energy International | Paonia | 501(c)(3) | 1993 | $3.3 million | $1.7 million | 2024-12 |
| Community Office for Resource Efficiency | Aspen | 501(c)(3) | 1995 | $3.1 million | $5.1 million | 2024-12 |
| Southwest Energy Efficiency Project LLC | Boulder | 501(c)(3) | 2003 | $3.1 million | $3.2 million | 2025-12 |
| Colorado Center for the Advancement of Patient Safety | Denver | 501(c)(3) | 1993 | $3.1 million | $5.9 million | 2024-12 |
| Trees Water and People | Fort Collins | 501(c)(3) | 1998 | $3.1 million | $2.3 million | 2026-03 |
| Fishchoice Inc | Fort Collins | 501(c)(3) | 2009 | $3.1 million | $2.1 million | 2024-12 |
| Chama Peak Land Alliance | Pagosa SPGS | 501(c)(3) | 2014 | $3 million | $746,316 | 2025-12 |
| Cal-Wood Education Center | Jamestown | 501(c)(3) | 2006 | $2.9 million | $2.3 million | 2025-12 |
| Colorado Mountain Club Foundation | Golden | 501(c)(3) | 1973 | $2.8 million | $4 million | 2025-10 |
| C O L Foundation | Lakewood | 501(c)(3) | 1988 | $2.7 million | $15.9 million | 2025-03 |
| Thorne Ecological Institute | Lafayette | 501(c)(3) | 1957 | $2.7 million | $7.4 million | 2025-08 |
| Colorado Mountain Club | Golden | 501(c)(3) | 1994 | $2.7 million | $5.8 million | 2025-09 |
| Leave No Trace Center for Outdoor Ethics | Boulder | 501(c)(3) | 1995 | $2.7 million | $2.2 million | 2025-12 |
| Pact Collective | Evergreen | 501(c)(3) | 2022 | $2.6 million | $981,846 | 2025-12 |
| Savory Institute Org Inc | Boulder | 501(c)(3) | 2013 | $2.6 million | $7.1 million | 2024-12 |
| Gunnison Legacy Fund | Gunnison | 501(c)(3) | 1998 | $2.6 million | $28.7 million | 2025-12 |
| Ember Alliance | Fort Collins | 501(c)(3) | 2022 | $2.6 million | $758,397 | 2025-12 |
| The Colorado Youth Outdoors Charitable Trust | Fort Collins | 501(c)(3) | 2002 | $2.5 million | $6.5 million | 2025-12 |
| Bluff Lake Nature Center | Denver | 501(c)(3) | 1995 | $2.5 million | $12.7 million | 2024-12 |
| Growing Gardens | Boulder | 501(c)(3) | 1999 | $2.5 million | $2.8 million | 2025-12 |
| Sarara Institute | Denver | 501(c)(3) | 2018 | $2.4 million | $458,809 | 2024-12 |
| Animas-La Plata Operation Maintenance and Replacement Associ | Durango | 501(c)(3) | 2011 | $2.4 million | $10.4 million | 2025-09 |
| Environmental Action Inc | Denver | 501(c)(4) | 2004 | $2.4 million | $3.1 million | 2025-06 |
| Wildlands Restoration Volunteers | Longmont | 501(c)(3) | 2002 | $2.4 million | $2.5 million | 2026-02 |
| Natural Capitalism Solutions Inc | Longmont | 501(c)(3) | 2004 | $2.3 million | $2.6 million | 2025-12 |
| Cherokee Ranch and Castle Foundation | Sedalia | 501(c)(3) | 2022 | $2.3 million | $34.1 million | 2024-12 |
| Rios To Rivers | Aspen | 501(c)(3) | 2012 | $2.2 million | $1.1 million | 2025-12 |
| Foundation for the National Laboratory of the Rockies | Golden | 501(c)(3) | 2021 | $2.1 million | $1.2 million | 2024-12 |
| The Alliance for Collective Action | Denver | 501(c)(3) | 2004 | $2 million | $11.1 million | 2024-12 |
| High Country Conservation Center | Frisco | 501(c)(3) | 1978 | $2 million | $1.8 million | 2024-12 |
| Coalition for the Poudre River Watershed | Fort Collins | 501(c)(3) | 2014 | $2 million | $1.7 million | 2025-12 |
| Future Earth | Fort Collins | 501(c)(3) | 2018 | $2 million | $1.9 million | 2025-03 |
| Continental Divide Trail Coalition | Golden | 501(c)(3) | 2012 | $2 million | $1.5 million | 2024-12 |
| VP Data Commons | Conifer | 501(c)(3) | 2020 | $2 million | $364,165 | 2025-12 |
| Colorado Rio Grande Restoration Foundation | Alamosa | 501(c)(3) | 2005 | $1.9 million | $542,449 | 2025-12 |
| Roaring Fork Conservancy | Basalt | 501(c)(3) | 1997 | $1.9 million | $3.6 million | 2024-12 |
| International Erosion Control Association | Aurora | 501(c)(3) | 1979 | $1.9 million | $789,356 | 2025-06 |
| Colorado Coalition of Land Trusts | Lakewood | 501(c)(3) | 1997 | $1.9 million | $3.2 million | 2025-12 |
| Betty Ford Alpine Gardens | Vail | 501(c)(3) | 1986 | $1.8 million | $9.6 million | 2025-09 |
| Rio Grande Headwaters Land Trust A Colorado Nonprofit Corporation | Del Norte | 501(c)(3) | 1999 | $1.7 million | $2.5 million | 2025-12 |
| Riversedge West | Grand JCT | 501(c)(3) | 2002 | $1.7 million | $1.2 million | 2024-12 |
| Sme Foundation | Englewood | 501(c)(3) | 1991 | $1.7 million | $7.3 million | 2025-09 |
| Crested Butte Land Trust | Crested Butte | 501(c)(3) | 1992 | $1.7 million | $18 million | 2025-06 |
| Ecoflight | Aspen | 501(c)(3) | 2002 | $1.6 million | $1.8 million | 2025-12 |
| Mountain Studies Institute Inc | Durango | 501(c)(3) | 2003 | $1.6 million | $689,036 | 2025-12 |
| Coalition for the Upper South Platte | Lake George | 501(c)(3) | 1998 | $1.6 million | $615,887 | 2024-12 |
| Always On Energy Research | Denver | 501(c)(3) | 2023 | $1.5 million | $679,407 | 2025-12 |
| Eagle Valley Land Trust | Edwards | 501(c)(3) | 1981 | $1.5 million | $11.6 million | 2024-12 |
| Western Energy Freedom Association | Lakewood | 501(c)(3) | 2024 | $1.5 million | $362,920 | 2025-12 |
| San Juan Mountains Association | Durango | 501(c)(3) | 1976 | $1.5 million | $1.4 million | 2024-12 |
| Council of Western State Foresters | Denver | 501(c)(3) | 2003 | $1.4 million | $344,830 | 2024-12 |
| Riverview Technology Corporation | Grand JCT | 501(c)(3) | 2003 | $1.4 million | $6.1 million | 2025-09 |
| Yampa Valley Sustainability Council | Steamboat SPR | 501(c)(3) | 2009 | $1.4 million | $722,048 | 2024-12 |
| Drive Clean Colorado | Berthoud | 501(c)(3) | 2023 | $1.3 million | $266,037 | 2025-09 |
| Denver Audubon Society | Littleton | 501(c)(3) | 1970 | $1.3 million | $2.5 million | 2025-06 |
| Institute for Social and Environmental Transition-Intl | Boulder | 501(c)(3) | 1997 | $1.3 million | $1.6 million | 2025-06 |
| Global Warming Mitigation Project | Aspen | 501(c)(3) | 2018 | $1.3 million | $864,268 | 2024-12 |
| Rocky Mountain Raptor Program | Fort Collins | 501(c)(3) | 2004 | $1.3 million | $1.8 million | 2025-12 |
| Upper San Juan Watershed Enhancement Partnership | Pagosa SPGS | 501(c)(3) | 2024 | $1.2 million | $605,534 | 2025-12 |
| Vail Valley Mountain Trails Allianc | Avon | 501(c)(3) | 2021 | $1.2 million | $648,067 | 2024-12 |
| Cloud City Conservation Center | Leadville | 501(c)(3) | 2012 | $1.2 million | $1.3 million | 2024-12 |
| Friends of the Yampa Inc | Steamboat SPR | 501(c)(3) | 2010 | $1.2 million | $1.2 million | 2024-12 |
| Boulder Carshare | Boulder | 501(c)(3) | 2006 | $1.2 million | $846,607 | 2025-12 |
| Douglas County Land Conservancy | Castle Rock | 501(c)(3) | 1988 | $1.2 million | $3.8 million | 2025-12 |
| San Juan Citizens Alliance | Durango | 501(c)(3) | 1998 | $1.2 million | $1.1 million | 2025-12 |
| 350 Colorado | Boulder | 501(c)(3) | 2014 | $1.1 million | $760,173 | 2025-12 |
| Worldmind Nature Immersion School | Denver | 501(c)(3) | 2015 | $1.1 million | $2.3 million | 2025-07 |
| Eagle River Watershed Council Inc | Eagle | 501(c)(3) | 2006 | $1.1 million | $759,082 | 2025-12 |
| Friends of the Dillon Ranger District A Co Nonprofit Corp | Silverthorne | 501(c)(3) | 2005 | $1.1 million | $1.2 million | 2025-12 |
| Small Town Project | Rocky Ford | 501(c)(3) | 2019 | $1.1 million | $618,614 | 2025-12 |
| Big Thompson Watershed Coalition | Loveland | 501(c)(3) | 2016 | $1.1 million | $842,658 | 2024-12 |
| High Plains Environmental Center | Loveland | 501(c)(3) | 2002 | $1 million | $879,116 | 2024-12 |
| Aspen Center for Environmental Studies Endowment Fund Inc | Aspen | 501(c)(3) | 2002 | $1 million | $14.2 million | 2025-10 |
| Montezuma Land Conservancy | Cortez | 501(c)(3) | 1999 | $1 million | $3.8 million | 2024-12 |
| Middle Colorado Watershed Council | Rifle | 501(c)(3) | 2014 | $984,711 | $200,454 | 2025-12 |
| Boulder Watershed Collective | Boulder | 501(c)(3) | 2021 | $975,650 | $1.6 million | 2024-12 |
| Colorado Parks & Recreation Association | Wheat Ridge | 501(c)(3) | 2014 | $971,778 | $886,306 | 2025-12 |
| Estes Valley Land Trust Inc | Estes Park | 501(c)(3) | 1987 | $908,654 | $4.9 million | 2024-12 |
| Nature and Wildlife Discovery Center | Beulah | 501(c)(3) | 2000 | $891,602 | $1.4 million | 2025-12 |
| Colorado Energy & Water Institute | Denver | 501(c)(3) | 2020 | $889,158 | $358,862 | 2025-12 |
| Weed Science Society of America | Eaton | 501(c)(3) | 1968 | $878,992 | $2.5 million | 2024-11 |
| Colorado Foundation for Water Education | Denver | 501(c)(3) | 2003 | $878,447 | $665,338 | 2025-06 |
| Four Corners Office for Resource Efficiency | Durango | 501(c)(3) | 2009 | $874,363 | $279,691 | 2025-12 |
| Mountain Area Land Trust | Evergreen | 501(c)(3) | 1993 | $869,399 | $3.8 million | 2024-12 |
| Colorado Alliance for Environmental Education | Denver | 501(c)(3) | 1990 | $849,383 | $640,095 | 2025-12 |
| Green Corps Inc | Denver | 501(c)(3) | 1992 | $802,778 | $4.9 million | 2025-06 |
| Heart J Center for Experiential Learning at Sylvan Dale Ranch | Loveland | 501(c)(3) | 2017 | $802,350 | $697,750 | 2024-12 |
| Energy Smart Colorado | Frisco | 501(c)(3) | 2014 | $784,092 | $634,106 | 2025-12 |
| Cottonwood Institute | Denver | 501(c)(3) | 2007 | $779,815 | $465,231 | 2025-09 |
| Colorado Ag Water Alliance | Littleton | 501(c)(3) | 2019 | $766,314 | $126,590 | 2025-06 |
| Izaak Walton League of America Inc | Colorado SPGS | 501(c)(3) | 1985 | $751,029 | $957,803 | 2024-12 |
| Goals | Evergreen | 501(c)(3) | 2010 | $746,774 | $250,297 | 2024-12 |
| American Solar Energy Society Inc | Boulder | 501(c)(3) | 1980 | $743,911 | $362,744 | 2025-12 |
| Lighthawk | Loveland | 501(c)(3) | 1982 | $729,263 | $1.8 million | 2025-03 |
| Womens Voices for the Earth | Denver | 501(c)(3) | 1996 | $723,660 | $1.1 million | 2025-12 |
| Wildfire Collaborative Roaring Fork Valley | Carbondale | 501(c)(3) | 2023 | $711,030 | $705,105 | 2025-12 |
| Yampatika Outdoor Awareness Association | Steamboat SPR | 501(c)(3) | 1993 | $705,493 | $447,139 | 2024-12 |
| Uviation World Water | Canon City | 501(c)(3) | 2016 | $700,345 | $273,434 | 2024-12 |
| Trails Preservation Alliance | Greeley | 501(c)(3) | 2008 | $685,162 | $1.8 million | 2025-11 |
| Community Thrift & Treasure Inc | Glenwood SPGS | 501(c)(3) | 2012 | $674,920 | $277,327 | 2025-12 |
| Poudre Heritage Alliance A Colorado Nonprofit Corporation | Windsor | 501(c)(3) | 2003 | $674,545 | $660,301 | 2025-12 |
| Western Way Organization | Englewood | 501(c)(3) | 2017 | $654,546 | $335,610 | 2024-12 |
| Art Parts Creative Reuse Center | Boulder | 501(c)(3) | 2014 | $650,375 | $203,380 | 2025-12 |
| Peaks To People Water Fund | Fort Collins | 501(c)(3) | 2018 | $641,187 | $255,211 | 2025-06 |
| Yampa River Botanic Park Society | Steamboat SPR | 501(c)(3) | 2022 | $637,298 | $209,762 | 2025-12 |
| Common Foundation | Boulder | 501(c)(3) | 2011 | $631,629 | $82,261 | 2024-12 |
| Co-Op Leadership Academy | Bayfield | 501(c)(3) | 2024 | $630,677 | $435,996 | 2025-12 |
| Ithaka Land Inc | Colorado SPGS | 501(c)(3) | 1981 | $622,706 | $3.3 million | 2025-12 |
| Council for the New Energy Economics | Boulder | 501(c)(3) | 2020 | $617,500 | $429,561 | 2024-12 |
| Rocky Mountain Wild Incorporated | Denver | 501(c)(3) | 2000 | $593,506 | $474,960 | 2025-12 |
| Guidestone | Salida | 501(c)(3) | 2008 | $572,712 | $238,038 | 2025-12 |
| Circular Colorado Incorporated | Broomfield | 501(c)(3) | 2022 | $569,418 | $40,291 | 2024-12 |
| Colorado Watershed Assembly | Glendale | 501(c)(3) | 2002 | $568,882 | $355,652 | 2024-12 |
| Creatio Inc | Denver | 501(c)(3) | 2010 | $566,586 | $99,020 | 2024-12 |
| Blue River Watershed Group | Silverthorne | 501(c)(3) | 2005 | $563,228 | $138,284 | 2024-12 |
| Recreative Denver | Denver | 501(c)(3) | 2016 | $539,974 | $99,790 | 2025-12 |
| Rocky Mountain Water Environment Assoc | Denver | 501(c)(3) | 1979 | $539,782 | $367,291 | 2024-12 |
| Clear the Air Foundation | Denver | 501(c)(3) | 2010 | $513,946 | $1.4 million | 2024-12 |
| Plant Select | Fort Collins | 501(c)(3) | 2008 | $502,587 | $474,627 | 2024-12 |
| Greater Arkansas River Nature Association | Salida | 501(c)(3) | 1999 | $494,537 | $134,957 | 2025-12 |
| New Earth Collaborative | Aurora | 501(c)(3) | 2022 | $490,328 | $123,829 | 2025-12 |
| Conejos County Clean Water Inc | Antonito | 501(c)(3) | 2011 | $487,820 | $381,702 | 2025-06 |
| Social Bridge | Glenwood SPGS | 501(c)(3) | 2017 | $482,665 | $41,426 | 2024-12 |
| Kiva Center | Boulder | 501(c)(3) | 2017 | $482,275 | $221,549 | 2025-12 |
| Sangre de Cristo National Heritage Area | Alamosa | 501(c)(3) | 2010 | $481,050 | $130,799 | 2025-12 |
| Arkansas River Watershed Collaborative | Westcliffe | 501(c)(3) | 2018 | $467,784 | $260,523 | 2024-12 |
| Triple Bottom Line Foundation | Denver | 501(c)(3) | 2002 | $449,514 | $5.2 million | 2025-12 |
| Western Mining Action Project | Lyons | 501(c)(3) | 2004 | $446,238 | $1.5 million | 2025-12 |
| La Plata Open Space Conservancy | Durango | 501(c)(3) | 1992 | $444,154 | $1.8 million | 2024-12 |
| Dolores River Boating Advocates | Dolores | 501(c)(3) | 2014 | $434,872 | $404,503 | 2024-12 |
| Climate Justice Hive | Boulder | 501(c)(3) | 2024 | $433,081 | $175,661 | 2025-12 |
| 5 Point Film Festival | Carbondale | 501(c)(3) | 2008 | $426,063 | $230,342 | 2025-12 |
| Boulder Climbing Community | Boulder | 501(c)(3) | 2012 | $421,952 | $124,256 | 2024-12 |
| Partners for Conservation Inc | Ordway | 501(c)(3) | 2014 | $416,112 | $388,392 | 2025-12 |
| Clean Valley Recycling | La Junta | 501(c)(3) | 2012 | $414,137 | $0 | 2024-12 |
| Coldharbour Institute | Gunnison | 501(c)(3) | 2004 | $399,222 | $1.7 million | 2025-12 |
| Jeffco Open Space Foundation Inc | Golden | 501(c)(3) | 2019 | $394,875 | $285,604 | 2025-12 |
| National Wilderness Stewardship Alliance | Fort Collins | 501(c)(3) | 2014 | $393,867 | $141,019 | 2025-12 |
| Learning By Doing Inc | Hot SLPHR SPR | 501(c)(3) | 2020 | $384,154 | $2 million | 2024-12 |
| Earth Restoration Alliance | Carbondale | 501(c)(3) | 1995 | $381,682 | $39,302 | 2025-12 |
| Sycamore Foundation | Boulder | 501(c)(3) | 2019 | $372,101 | $364,337 | 2024-12 |
| Environmental and Engineering Geophysical Society | Denver | 501(c)(3) | 1989 | $370,761 | $31,914 | 2025-12 |
| Salida Mountain Trails | Salida | 501(c)(3) | 2013 | $367,393 | $446,660 | 2025-12 |
| Gunnison Trails | Gunnison | 501(c)(3) | 2010 | $364,026 | $445,142 | 2024-12 |
| Colorado Association for Recycling Inc | Longmont | 501(c)(3) | 2002 | $357,906 | $194,976 | 2025-12 |
| Poudre Learning Center Foundation Inc | Greeley | 501(c)(3) | 2015 | $336,010 | $2.2 million | 2025-06 |
| People and Pollinators Action Network | Niwot | 501(c)(3) | 2019 | $335,387 | $309,422 | 2025-12 |
| Earth Guardians Inc | Boulder | 501(c)(3) | 1999 | $332,375 | $166,740 | 2024-12 |
| Shadowcliff | Grand Lake | 501(c)(3) | 2003 | $316,286 | $1.2 million | 2025-04 |
| Harvest of All First Nations | Boulder | 501(c)(3) | 2022 | $311,307 | $54,872 | 2024-12 |
| Blue Elements | Canon City | 501(c)(3) | 2022 | $307,789 | $234,428 | 2025-12 |
| Nourish International USA | Rocky Ford | 501(c)(3) | 2021 | $300,873 | $18,532 | 2025-12 |
| Climate Democracy Initiative | Denver | 501(c)(3) | 2022 | $295,056 | $27,961 | 2025-12 |
| North American Hazardous Materials Management Association | Eaton | 501(c)(3) | 1995 | $294,947 | $405,497 | 2025-12 |
| Estes Valley Watershed Coalition | Estes Park | 501(c)(3) | 2015 | $293,310 | $169,708 | 2025-12 |
| Southeast & East Central Recycling Association | Walsenburg | 501(c)(3) | 1996 | $293,011 | $296,043 | 2024-12 |
| Land Use Resource Center | Boulder | 501(c)(3) | 1993 | $291,332 | $1.6 million | 2024-12 |
| Purgatoire Watershed Partnership Inc | Trinidad | 501(c)(3) | 2015 | $277,444 | $53,685 | 2024-12 |
| Roaring Fork Safe Passages | Basalt | 501(c)(3) | 2016 | $276,649 | $283,192 | 2025-12 |
| Friends of High Camp | Telluride | 501(c)(3) | 2023 | $275,760 | $107,540 | 2025-12 |
| El Paso County Parks Naturalist Docent Organization Inc | Colorado SPGS | 501(c)(3) | 1998 | $275,113 | $517,278 | 2025-12 |
| Vibe Tribe Adventures | Aurora | 501(c)(3) | 2020 | $268,370 | $27,264 | 2025-12 |
| Rocky Mountain Sport Riders Inc | Avon | 501(c)(3) | 2018 | $266,208 | $256,552 | 2026-04 |
| Colorado Native Plant Society | Denver | 501(c)(3) | 1977 | $249,264 | $709,587 | 2025-12 |
| Oak Meadows Service Company | Glenwood SPGS | 501(c)(12) | 2019 | $247,307 | $986,205 | 2025-12 |
| Montezuma School To Farm Project | Cortez | 501(c)(3) | 2020 | $244,246 | $366,574 | 2025-12 |
| Durango Botanic Gardens | Durango | 501(c)(3) | 2014 | $237,914 | $419,433 | 2025-12 |
| Conservation Investment Germinator | Castle Rock | 501(c)(3) | 2020 | $233,276 | $147,726 | 2024-12 |
| Center for Snow and Avalanche Studies | Silverton | 501(c)(3) | 2003 | $226,558 | $202,934 | 2026-06 |
| Energy & Conservation Law | Durango | 501(c)(3) | 2014 | $225,726 | $252,377 | 2024-12 |
| Climate Jobs Colorado Inc | Denver | 501(c)(3) | 2026 | $224,076 | $91,607 | 2025-12 |
| Salida Area Parks Open Space and Trails | Salida | 501(c)(3) | 2000 | $221,369 | $20,041 | 2024-12 |
| Cherry Hills Land Preserve Inc | Englewood | 501(c)(3) | 2004 | $220,010 | $240,296 | 2025-12 |
| Cossa Institute Inc | Denver | 501(c)(3) | 2023 | $216,761 | $71,227 | 2024-12 |
| Arctic Arts Project | Denver | 501(c)(3) | 2020 | $214,861 | $308,980 | 2024-12 |
| Base Line Land & Reservoir Co | Longmont | 501(c)(12) | 2019 | $205,625 | $2.5 million | 2024-11 |
| Western Leaders Network | Durango | 501(c)(3) | 2017 | $204,656 | $176,670 | 2025-12 |
| Grand County Water Information Network | Grand Lake | 501(c)(3) | 2006 | $192,704 | $116,354 | 2024-12 |
| High Plains Foundation | Loveland | 501(c)(3) | 2002 | $190,701 | $8.7 million | 2024-12 |
| Rocky Mountain Land Library | Denver | 501(c)(3) | 2006 | $186,973 | $458,767 | 2025-12 |
| Bear Trust International | Windsor | 501(c)(3) | 1999 | $186,815 | $161,448 | 2024-12 |
| Boulder Open Space Conservancy | Boulder | 501(c)(3) | 2017 | $186,389 | $165,984 | 2025-12 |
| Willowtail Springs Nature Preserve and Education Center | Mancos | 501(c)(3) | 2013 | $186,284 | $8,652 | 2023-12 |
| Forest Conservancy | Carbondale | 501(c)(3) | 2001 | $185,780 | $386,323 | 2025-12 |
| Historic Pines Ranch Preservation Association | Westcliffe | 501(c)(3) | 2017 | $184,347 | $5,177 | 2024-12 |
| Colorado Nature League | Denver | 501(c)(3) | 2024 | $180,546 | $45,675 | 2024-12 |
| Spanish Peaks Alliance for Wildfire Protection | La Veta | 501(c)(3) | 2019 | $179,996 | $74,625 | 2025-12 |
| Mt Sopris Recreational Riders Inc | Carbondale | 501(c)(3) | 2013 | $177,292 | $152,080 | 2025-12 |
| Keep Colorado Springs Beautiful Inc | Colorado SPGS | 501(c)(3) | 1991 | $173,551 | $28,121 | 2025-07 |
| Regenerative Earth | Boulder | 501(c)(3) | 2016 | $161,889 | $151,895 | 2024-12 |
| Protect Our Rivers | Lakewood | 501(c)(3) | 2021 | $161,269 | $86,194 | 2025-12 |
| Solar Barn Raising | Durango | 501(c)(3) | 2016 | $159,801 | $7,672 | 2024-12 |
| Eagle Summit Wilderness Alliance | Frisco | 501(c)(3) | 1995 | $159,466 | $297,446 | 2025-12 |
| Sustainable Settings | Carbondale | 501(c)(3) | 2002 | $158,891 | $2.8 million | 2025-12 |
| Groundwork | Paonia | 501(c)(3) | 2018 | $158,125 | $46,391 | 2025-12 |
| Classrooms for Climate Action | Louisville | 501(c)(3) | 2022 | $154,757 | $114,945 | 2024-12 |
| San Miguel Conservation Foundation | Telluride | 501(c)(3) | 1994 | $153,008 | $1.8 million | 2025-12 |
| Rio Grande Watershed Conservation & Education Initiative | Alamosa | 501(c)(3) | 2009 | $148,770 | $88,105 | 2025-12 |
| Plano Land Trust Corporation | Wray | 501(c)(3) | 2001 | $144,650 | $509,637 | 2025-06 |
| Evergreens Alliance for Sustainability | Evergreen | 501(c)(3) | 2010 | $144,546 | $175,130 | 2025-09 |
| Uncompahgre Watershed Partnership A Colorado Nonprofit Corporation | Ridgway | 501(c)(3) | 2013 | $137,904 | $123,739 | 2024-12 |
| Colorado Water Wise Council | Denver | 501(c)(3) | 1994 | $135,925 | $227,536 | 2025-12 |
| Lake Fork Valley Conservancy | Lake City | 501(c)(3) | 1999 | $134,486 | $1.1 million | 2025-12 |
| Headwaters Alliance | Creede | 501(c)(3) | 2017 | $133,412 | $40,867 | 2024-12 |
| San Luis Valley Ecosystem Council | Alamosa | 501(c)(3) | 1999 | $132,575 | $24,298 | 2025-08 |
| Basecamp Foundation USA | Denver | 501(c)(3) | 2010 | $130,413 | $88,803 | 2024-12 |
| Sheep Mountain Alliance | Telluride | 501(c)(3) | 1995 | $128,744 | $32,398 | 2025-12 |
| Central Rocky Mountain Permaculture Institute | Basalt | 501(c)(3) | 1992 | $126,915 | $429,443 | 2024-12 |
| Citizens for A Healthy Community | Paonia | 501(c)(3) | 2010 | $124,442 | $49,678 | 2025-09 |
| Sembrando Esperanza | Greeley | 501(c)(3) | 2024 | $124,154 | $114,238 | 2024-12 |
| Cimarron VALLEY&RIVER Coalition | Montrose | 501(c)(3) | 2022 | $120,907 | $1,069 | 2025-12 |
| Colorado Advanced Manufacturing Foundation | Denver | 501(c)(3) | 2014 | $119,607 | $10,900 | 2024-12 |
| Carbondale Agricultural Heritage Fund | Carbondale | 501(c)(4) | 2026 | $116,252 | $115,950 | 2025-12 |
| Pagosa Area Trails Council | Pagosa SPGS | 501(c)(3) | 1998 | $115,077 | $119,888 | 2025-12 |
| Arkansas River Basin Water Forum | Pueblo | 501(c)(3) | 2015 | $113,675 | $103,934 | 2025-12 |
| Poudre River Trail Corridor Inc | Windsor | 501(c)(3) | 1997 | $113,264 | $5.4 million | 2025-12 |
| Always Choose Adventures Inc | Idaho Springs | 501(c)(3) | 2018 | $111,895 | $12,936 | 2025-12 |
| Mother of Corals | Denver | 501(c)(3) | 2020 | $108,704 | $65,320 | 2025-12 |
| Southeast Colorado Two Shot Wildlife & Habitat Foundation | Lamar | 501(c)(3) | 2014 | $104,426 | $77,788 | 2024-12 |
| Waste Interceptors Inc | Calhan | 501(c)(3) | 2014 | $102,254 | $167,768 | 2025-12 |
| National Recycling Coalition Inc | Loveland | 501(c)(3) | 1978 | $101,988 | $502,706 | 2025-12 |
| Colorado River School | Englewood | 501(c)(3) | 2025 | $100,073 | $93,005 | 2021-12 |
| Envision Inc | Salida | 501(c)(3) | 2026 | $96,351 | $28,574 | 2025-12 |
| La Veta Trails Incorporated | La Veta | 501(c)(3) | 2015 | $96,139 | $68,178 | 2025-12 |
| Caribbean Coral Restoration Center | Lyons | 501(c)(3) | 2016 | $95,619 | $71,667 | 2025-12 |
| Big Dry Creek Watershed Association | Broomfield | 501(c)(3) | 2005 | $92,098 | $199,317 | 2025-09 |
| Save the Poudre - Poudre Watekeeper | Boulder | 501(c)(3) | 2010 | $90,609 | $66,067 | 2024-12 |
| Wild Connections Inc | Colorado SPGS | 501(c)(3) | 2004 | $89,185 | $67,305 | 2024-12 |
| Gold Belt Tour Scenic and Historic Byway Association Inc | Guffey | 501(c)(3) | 2000 | $87,674 | $47,833 | 2025-12 |
| Sangre Dechristo Acequia Association | San Luis | 501(c)(3) | 2009 | $85,887 | $73,183 | 2025-12 |
| Top of the Pines Inc | Ridgway | 501(c)(3) | 2002 | $85,374 | $270,943 | 2025-12 |
| Colorado Wastewater Utility Council | Littleton | 501(c)(3) | 2002 | $85,195 | $71,388 | 2025-09 |
| Rocky Mountain Regional Turfgrass Association Inc | Aurora | 501(c)(5) | 2023 | $83,407 | $113,412 | 2026-03 |
| Living With Harmony Inc | Boulder | 501(c)(3) | 2014 | $82,617 | $507,434 | 2025-12 |
| Full Circle Expeditions Inc | Cortez | 501(c)(3) | 2024 | $81,724 | $80,269 | 2024-12 |
| Ecuadorian Rivers Institute | Basalt | 501(c)(3) | 2003 | $80,265 | $102,502 | 2024-12 |
| Environmental Action Research Center Inc | Denver | 501(c)(3) | 2017 | $79,399 | $61,276 | 2025-06 |
| Colorado Wild Public Lands Inc | Basalt | 501(c)(3) | 2014 | $78,646 | $20,592 | 2024-12 |
| 1 Percent for Open Space Inc | Crested Butte | 501(c)(3) | 2001 | $76,303 | $242,723 | 2024-12 |
| Climate Accountability Institute | Snowmass | 501(c)(3) | 2012 | $75,399 | $22,329 | 2025-12 |
| Coal Creek Watershed Coalition | Crested Butte | 501(c)(3) | 2009 | $75,159 | $80,361 | 2025-12 |
| Cohvco Access Fund | Thornton | 501(c)(3) | 2017 | $74,797 | $37,710 | 2024-12 |
| Richards Rubbish Roundup | Colorado SPGS | 501(c)(3) | 2024 | $74,285 | $17,097 | 2024-12 |
| Terra Firma Rainwater Collective | Carbondale | 501(c)(3) | 2020 | $73,386 | $77,249 | 2025-12 |
| Two Rivers Wildfire Coalition | Clifton | 501(c)(3) | 2021 | $71,303 | $18,029 | 2025-12 |
| East Grand Water Quality Board | Fraser | 501(c)(3) | 2011 | $69,860 | $73,275 | 2024-12 |
| Wild Mountain Retreats Inc | Nederland | 501(c)(3) | 2021 | $68,668 | $52,042 | 2024-12 |
| Sloans Lake Park Foundation | Denver | 501(c)(3) | 2020 | $65,647 | $42,025 | 2025-12 |
| Sustainable Grand | Louisville | 501(c)(3) | 2023 | $63,421 | $70,188 | 2025-12 |
| Purgatoire Apishapa & Comanche Grassland Trust | Trinidad | 501(c)(3) | 2007 | $61,773 | $72,222 | 2024-12 |
| Lyons Community Farm Project | Lyons | 501(c)(3) | 2021 | $61,606 | $27,196 | 2025-12 |
| Fort Lyon Water Association | MC Clave | 501(c)(12) | 2016 | $61,303 | $248,345 | 2025-12 |
| Save the Worlds Rivers | Boulder | 501(c)(3) | 2015 | $60,017 | $20,560 | 2024-12 |
| Palmer Lake Restoration Project Inc | Palmer Lake | 501(c)(3) | 2019 | $59,851 | $186,161 | 2024-12 |
| Keep Colorado Beautiful 1876 | Fort Collins | 501(c)(3) | 2025 | $58,194 | $27,791 | 2025-12 |
| Regenerative Community Land Trust | Rollinsville | 501(c)(3) | 2022 | $56,817 | $1 | 2024-12 |
| Happiness Project | Greenwood Village | 501(c)(3) | 2004 | $54,986 | $36,974 | 2024-12 |
| Cloud Ridge Naturalists | Ward | 501(c)(3) | 1984 | $54,855 | $244,418 | 2024-12 |
| Trail Group Inc | Ouray | 501(c)(3) | 1996 | $54,653 | $365,303 | 2025-12 |
| Grand Valley Audubon Society | Grand JCT | 501(c)(3) | 1973 | $54,413 | $391,023 | 2025-06 |
| Poudre Wilderness Volunteers | Fort Collins | 501(c)(3) | 1996 | $54,120 | $264,960 | 2025-12 |
| Global Ecovillage Network-United States | Denver | 501(c)(3) | 2000 | $52,358 | $47,010 | 2024-12 |
| Wet Mountain Valley Outdoors | Westcliffe | 501(c)(3) | 2025 | $52,342 | $30 | 2025-12 |
| Clean Energy Action | Boulder | 501(c)(3) | 2010 | $52,186 | $42,645 | 2025-12 |
| Big Creek Reservoir Company | Collbran | 501(c)(12) | 2025 | $51,840 | $54,881 | 2025-12 |
| Neighborhood Rehab Project | Golden | 501(c)(3) | 2020 | $51,732 | $35,855 | 2025-12 |
| Colorado Tree Coalition Inc | Denver | 501(c)(3) | 1995 | $51,636 | $252,637 | 2024-12 |
| Friends of Staunton State Park | Pine | 501(c)(3) | 2013 | $50,223 | $52,860 | 2025-12 |
| Pollinator Stewardship Council Inc | Berthoud | 501(c)(3) | 2013 | $49,950 | $28,494 | 2025-12 |
| Rangeland Living Laboratory Inc | Guffey | 501(c)(3) | 2022 | $48,800 | $40,948 | 2025-12 |
| Forever Our Rivers | Grand JCT | 501(c)(3) | 2024 | $48,570 | $32,479 | 2025-12 |
| Open Water Foundation | Severance | 501(c)(3) | 2019 | $45,650 | $547 | 2024-12 |
| Arkansas River Conservation Cooperative | Salida | 501(c)(3) | 2023 | $45,071 | $173,190 | 2025-12 |
| Arei Inc | Aspen | 501(c)(3) | 2011 | $43,607 | $9,820 | 2024-12 |
| The Broadmoor Garden Club | Colorado SPGS | 501(c)(3) | 1998 | $42,438 | $134,738 | 2025-06 |
| Barr Lake and Milton Reservoir Watershed Association | Denver | 501(c)(3) | 2012 | $41,700 | $327,027 | 2025-07 |
| Unity Water Foundation | Lakewood | 501(c)(3) | 2025 | $37,210 | $3,474 | 2025-12 |
| Colorado Off-Highway Vehicle Coalition | Thornton | 501(c)(4) | 2002 | $36,942 | $13,328 | 2024-12 |
| Fountain Creek Watershed Inc | Colorado SPGS | 501(c)(3) | 2022 | $36,848 | $443,379 | 2024-12 |
| Colorado Renewable Energy Society | Fort Collins | 501(c)(3) | 1997 | $36,182 | $188,412 | 2025-12 |
| Dark Skies Inc | Westcliffe | 501(c)(3) | 1999 | $35,648 | $115,568 | 2025-12 |
| Colorado Federation of Garden Clubs Inc | Denver | 501(c)(3) | 1984 | $35,244 | $205,000 | 2025-05 |
| Stormwater Equipment Manufacturers Association | Littleton | 501(c)(6) | 2009 | $35,037 | $78,916 | 2025-12 |
| Clean Neighborhood Project Inc | Parker | 501(c)(3) | 2024 | $30,000 | $5,793 | 2025-12 |
| Bear Creek Watershed Foundation | Lakewood | 501(c)(3) | 2020 | $24,785 | $42,010 | 2023-12 |
| Keep Routt Wild Inc | Steamboat SPR | 501(c)(3) | 2019 | $24,321 | $95,035 | 2025-12 |
| Earthsaver Fund | Louisville | 501(c)(3) | 1999 | $24,274 | $5.1 million | 2024-12 |
| Blue Mountain Forest Stewardship Initiative | Golden | 501(c)(3) | 2014 | $21,337 | $52,186 | 2025-12 |
| The Rincon Water Cooperative | Littleton | 501(c)(12) | 2025 | $20,365 | $51,294 | 2025-12 |
| Seas of Trees Inc | Telluride | 501(c)(3) | 2020 | $18,222 | $42,161 | 2025-12 |
| Geothermal Greenhouse Partnership - Inc | Pagosa SPGS | 501(c)(3) | 2012 | $16,233 | $395,498 | 2024-12 |
| Denver Orchid Society | Denver | 501(c)(3) | 1985 | $15,250 | $66,637 | 2024-11 |
| Green Up Our Schools | Boulder | 501(c)(3) | 2011 | $14,995 | $8,670 | 2024-12 |
| Incline Friends | Colorado SPGS | 501(c)(3) | 2012 | $14,607 | $778,661 | 2026-06 |
| The Trust for Land Restoration Inc | Ridgway | 501(c)(3) | 2000 | $14,400 | $338,370 | 2024-12 |
| Kalon Farms | Centennial | 501(c)(3) | 2021 | $14,000 | $4,000 | 2024-12 |
| Six Basins Project Inc | Ouray | 501(c)(3) | 2017 | $13,352 | $169,386 | 2025-12 |
| 350 Colorado Action | Boulder | 501(c)(4) | 2020 | $11,189 | $83,285 | 2024-12 |
| Three Lakes Watershed Association Inc | Grand Lake | 501(c)(3) | 2003 | $10,757 | $66,439 | 2025-12 |
| Friends of Cheyenne Canon Inc | Colorado SPGS | 501(c)(3) | 1996 | $10,218 | $70,499 | 2025-12 |
| Aquatic Restoration and Research Institute | Rollinsville | 501(c)(3) | 2004 | $7,893 | $1.1 million | 2025-12 |
| Red Rock Canyon Foundation | Colorado SPGS | 501(c)(3) | 2003 | $7,843 | $52,838 | 2026-06 |
| The Action Committee for Eldorado | Boulder | 501(c)(3) | 1993 | $6,891 | $7,002 | 2024-12 |
| LC Real Estate Group Foundation | Loveland | 501(c)(3) | 2020 | $6,552 | $14,378 | 2025-12 |
| South Tollgate Ditch Company | Longmont | 501(c)(12) | 2019 | $5,420 | $13,735 | 2025-12 |
| Greenlands Reserve | Frisco | 501(c)(3) | 1999 | $5,416 | $151.7 million | 2024-12 |
| Glenwood Springs Riverside Botanical Gardens | Glenwood SPGS | 501(c)(3) | 2025 | $4,947 | $4,257 | 2025-12 |
| Cedaredge Community Gardens | Cedaredge | 501(c)(3) | 2010 | $4,903 | $5,466 | 2025-12 |
| 2041 Foundation Incorporated | Golden | 501(c)(3) | 2011 | $3,903 | $1,819 | 2024-06 |
| Falls Creek Wildlands and Trails | Durango | 501(c)(3) | 2025 | $3,560 | $1,062 | 2025-12 |
| Asett Co | Longmont | 501(c)(3) | 2026 | $1,700 | $84 | 2025-12 |
| Rivershared | Livermore | 501(c)(3) | 2020 | $214 | $42,503 | 2024-12 |
| Parvati Org Foundation | Lakewood | 501(c)(3) | 2019 | $17 | $41,444 | 2025-12 |
| Charge and Change Nonprofit | Fort Collins | 501(c)(3) | 2023 | $16 | $846 | 2023-12 |
| Aquarius Water Experience Foundation | Aspen | 501(c)(3) | 2022 | $11 | $61,587 | 2025-12 |
| 1000 Gretas Foundation | Boulder | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| 5 Minute Foundation Inc | Parker | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| A Part of Everything CDC | Denver | 501(c)(3) | 2025 | |||
| A Sanctuary Center | Sedalia | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Abundant Clean Water and Energy for All | Boulder | 501(c)(3) | 2024 | |||
| Abundant Clean Water and Energy for All Foundation | Divide | 501(c)(3) | 2024 | $1 | 2026-04 | |
| Accelerate Neighborhood Climate Action | Denver | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Acorn Nonprofit Capacity Building | Boulder | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Adventure Acres Foundation | Florence | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Aid & Images Inc | Monument | 501(c)(3) | 2023 | $1 | 2024-12 | |
| Alamosa River Foundation | La Jara | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Alaska Coastline Conservation | Steamboat SPR | 501(c)(3) | 2024 | |||
| Alliance Earth | Glenwood SPGS | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Alpen-Glow Inc | Steamboat SPR | 501(c)(3) | 2017 | $7,108 | 2024-12 | |
| Alpine Outdoor Association | Lake City | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Alpine Rallye Avant Le Ski | Greenwood VLG | 501(c)(3) | 2026 | |||
| Altai Institute for Research and Conservation Inc | Boulder | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Areas - American Renewable Energy Advocates Society - | Monument | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| Arkansas River Trust | Salida | 501(c)(3) | 2000 | $0 | $0 | 2025-09 |
| Arkansas Valley Audubon Society Inc | Pueblo | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Aspen International Mountain Foundation | Aspen | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Association for Native American Sacred Trees and Places | Larkspur | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Atlas Arckology Inc | Placerville | 501(c)(3) | 1998 | $0 | $0 | 2024-12 |
| Atmosphere Conservancy | Fort Collins | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Australian Bee Conservation | Colorado Springs | 501(c)(3) | 2024 | |||
| Axe and Snax | Pinecliffe | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Axolotl Renewable Energy Fund | Littleton | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Back Country Horsemen of America | Canon City | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Back Country Horsemen of Colorado | Durango | 501(c)(4) | 2022 | $0 | $0 | 2025-12 |
| Back the Wild LLC | Evergreen | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Backflow Association of Colorado | Golden | 501(c)(6) | 2026 | |||
| Bags From Rags | Conifer | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bancroft Foundation | Crested Butte | 501(c)(3) | 2023 | $4.2 million | 2024-12 | |
| Barker-Hunter Family Foundation | Greenwood Village | 501(c)(3) | 1999 | $34,464 | 2025-12 | |
| Beat the Batch | Ft Collins | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Beenewable | Lakewood | 501(c)(3) | 2021 | $2,300 | 2025-12 | |
| Belmont Forum Foundation | Wellington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bicycle Forward | Denver | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Black Forest Trails Association Inc | Colorado SPGS | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Black Jet Drone Academy | Denver | 501(c)(3) | 2026 | |||
| Blue Verve Project Inc | Boulder | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Booth Orchard Water Association | Pueblo | 501(c)(3) | 2026 | |||
| Boulder Area Trails Coalition | Boulder | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Boulder County Mounted Search & Rescue | Longmont | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Boulder County Nature Association | Boulder | 501(c)(3) | 1982 | $0 | $0 | 2025-12 |
| Boulder Green Building Foundation | Boulder | 501(c)(3) | 2006 | $0 | $0 | 2024-12 |
| Breckenridge Community Gardens Inc | Breckenridge | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Bringing Home America | Louisville | 501(c)(3) | 2011 | $0 | $0 | 2024-12 |
| Broomfield Open Space Foundation | Broomfield | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Buko Garden | Boulder | 501(c)(3) | 2025 | |||
| Bunyan Lateral Ditch Co | Longmont | 501(c)(12) | 2025 | |||
| Canopy Denver | Denver | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Carbon Neutral Foundation | Hesperus | 501(c)(3) | 2022 | $0 | $500 | 2023-12 |
| Carbondale Bike Project | Carbondale | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Caribbean Ocean Trust | Edwards | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Cascade Colorado Park Association Inc | Cascade | 501(c)(3) | 1992 | $0 | $0 | 2024-08 |
| Center for Environmental Diplomacy | Colorado Springs | 501(c)(3) | 2005 | $0 | $1 | 2025-12 |
| Center for Environmental Science Accuracy & Reliability | Nederland | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Center for Living Environments and Regeneration | Fort Collins | 501(c)(3) | 2013 | $0 | $0 | 2025-06 |
| Cherokee Freedom Ranch Wilderness Preserve Charitable Trust | Westcliffe | 501(c)(3) | 2022 | $134,360 | 2023-12 | |
| Cheyenne Central | Colorado Springs | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Cheyenne Commons Alliance | Colorado SPGS | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Chinle Cactus & Succulent Society | Grand JCT | 501(c)(5) | 2009 | $0 | $0 | 2025-12 |
| Citizens Climate Lobby Montrose Co | Montrose | 501(c)(4) | 2024 | $0 | $0 | 2025-12 |
| Citizens Progressive Alliance | Littleton | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Citizens for Clean Air Grand Junction Colorado | Grand JCT | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Citizens for Clean Energy Inc | Boulder | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Citizens for Huerfano County Inc | La Veta | 501(c)(3) | 2012 | $0 | $0 | 2025-06 |
| Clean Trails Inc | Denver | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Clean Water Here Foundation | Hygiene | 501(c)(3) | 2020 | $12.2 million | 2024-12 | |
| Cleaner Tomorrow Foundation Inc | Aurora | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Cleanliness and Safety Initiative | Aurora | 501(c)(3) | 2023 | $1 | 2025-12 | |
| Climate Change Narrative Org | Breckenridge | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Climateunified Org | Castle Rock | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Club Inspiration Inc | Boncarbo | 501(c)(3) | 2026 | |||
| Cold Climate Energy Alliance | Fort Collins | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Color Me Wild | Lakewood | 501(c)(3) | 2025 | |||
| Coloradans for Natural Resources | Denver | 501(c)(4) | 2014 | $0 | $0 | 2025-06 |
| Colorado Citizens Against Toxic Waste Inc | Canon City | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Colorado Cleantech Industry Association Foundation Inc | Niwot | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Colorado Embodied Carbon Collaborative | Centennial | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Colorado Grotto Inc | Denver | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Colorado Lake and Reservoir Management Association | Denver | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Colorado Potato Legislative Association | Center | 501(c)(4) | 2017 | $0 | $0 | 2025-12 |
| Colorado River Surfing Association Inc | Denver | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Colorado Section of the Society for Range Management | Ft Collins | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Colorado Springs Orchid Society | Colorado SPGS | 501(c)(7) | 2026 | |||
| Colorado State Tree Farm Committee | Pagosa SPGS | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Colorado Ukraine Agricultural Group | Broomfield | 501(c)(3) | 1994 | $0 | $0 | 2025-12 |
| Colorado Water Officials Association Division 1 | Greeley | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Coloradoheadwaters LLC | Salida | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Committee for A Healthy Rio Grande | Creede | 501(c)(3) | 2026 | |||
| Community Alliance of the Yampa Valley | Steamboat SPR | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Community Counts Colorado Inc | Rifle | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Community Fruit Rescue | Boulder | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Community Twine Recycling | Fort Collins | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Confluence Colorado | Denver | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Conservation Diver Foundation | Evergreen | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| Conservation Easement Preservation Society | Longmont | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Copper Environmental Foundation | Copper Mountain | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Cordis Certified Healthy | Denver | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Cos Sea Hawkers | Monument | 501(c)(3) | 2024 | $0 | $0 | 2025-10 |
| Council of Buffalo Nations | Bailey | 501(c)(3) | 2026 | |||
| Crested Butte Botanic Gardens | Crested Butte | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Crestone Baca Land Trust | Crestone | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Crowd Conservation | Fort Collins | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Crystal Lakes Open Space Conservancy Group | Windsor | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Culebra Range Community Coalition Inc | Trinidad | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Dark Skies Paonia | Paonia | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Darksky Grand Junction | Grand JCT | 501(c)(3) | 2026 | |||
| Denver Master Gardeners Association | Denver | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Desert Ecosystem Analysis Restoration | Grand JCT | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Desert Lion and Elephant Conservation | Nederland | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Design Workshop Foundation | Denver | 501(c)(3) | 2003 | $86,025 | 2025-12 | |
| Doing My Part Global | Denver | 501(c)(3) | 2025 | |||
| Dreammind Institute Inc | Broomfield | 501(c)(3) | 2025 | $0 | $0 | 2024-09 |
| Eaglevail Community Garden | Avon | 501(c)(3) | 2015 | $0 | $0 | 2025-10 |
| Earth Next Chapter | Littleton | 501(c)(3) | 2024 | $0 | $1 | 2025-12 |
| Earthnest the San Luis Valley Ecovillage Institute | Fort Garland | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Eco Give | Centennial | 501(c)(3) | 2025 | |||
| Eco Give Charity | Centennial | 501(c)(3) | 2025 | |||
| Eco Patrol Foundation | Broomfield | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Electrify Montrose | Montrose | 501(c)(3) | 2026 | |||
| Elephant Garden | Fort Collins | 501(c)(3) | 2026 | |||
| Emily Tintrup Dealy Foundation | Breckenridge | 501(c)(3) | 2025 | $95,973 | 2025-06 | |
| Enviro Pet Waste Network | Aurora | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Enviroevents Inc | Loveland | 501(c)(3) | 2022 | $8,029 | 2024-12 | |
| Envirofriendly Foundation | Littleton | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| Enviromental Mining Reclamation & Restoration Inc | Centennial | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Environment Illinois Research and Education Center NFP | Denver | 501(c)(3) | 2006 | $0 | $0 | 2025-06 |
| Environmental Alliance Inc | Denver | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Environmental Group | Nederland | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Environmental Research Group | Aspen | 501(c)(3) | 1986 | $0 | $0 | 2025-12 |
| Equitable Solar Solutions | Loveland | 501(c)(3) | 2026 | |||
| Estes Land Stewardship Association | Estes Park | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Estes Valley Community Garden Inc | Estes Park | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Eutierria Inc | Monument | 501(c)(3) | 2022 | $0 | $0 | 2026-07 |
| Explore Planet Foundation | Aurora | 501(c)(3) | 2025 | |||
| Eye of the Heart Wildlife Refuge | Black Hawk | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Fairtreeorg | Parker | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Ferris Olson Family Foundation for Ocean Stewardship | Centennial | 501(c)(3) | 2022 | $305,924 | 2025-12 | |
| Fertile Edge Community Land Trust | Paonia | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| First Ascent Foundation | Longmont | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Fishing for Conservation Incorporated | Sedalia | 501(c)(3) | 2024 | |||
| Focus On the Forest | Woodland Park | 501(c)(3) | 2017 | $0 | $0 | 2023-12 |
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.