Environment nonprofits in Colorado

Environment nonprofits in Colorado. Browse 1,078 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. 1 Percent for Open Space Inc

    EIN 841576444 · Headquarters: CRESTED BUTTE, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. 1000 Friends of Colorado Inc

    EIN 841294134 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  3. 1000 Gretas Foundation

    EIN 852597264 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. 101010

    EIN 200332081 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990

  5. 2 Percent for Rivers

    EIN 814016081 · Headquarters: Golden, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  6. 2041 Foundation Incorporated

    EIN 271681509 · Headquarters: GOLDEN, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  7. 350 Colorado

    EIN 463355370 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. 350 Colorado Action

    EIN 822466390 · Headquarters: Boulder, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. 474 Cherry Creek Anglers Chapter of Trout Unlimited

    EIN 521491884 · Headquarters: PARKER, CO, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. 5 Minute Foundation Inc

    EIN 852768442 · Headquarters: Parker, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. 528-G

    EIN 852110784 · Headquarters: Morrison, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  12. 5Point Film Festival

    EIN 383770309 · Headquarters: CARBONDALE, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  13. A Sanctuary Center

    EIN 841555701 · Headquarters: Sedalia, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Accelerate Neighborhood Climate Action

    EIN 834187198 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Access Fund Land Foundation

    EIN 330505050 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  16. Acorn Nonprofit Capacity Building

    EIN 333014646 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Action Committee for Eldorado

    EIN 841205166 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. Adventure Acres Foundation

    EIN 412326833 · Headquarters: Florence, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Aid & Images Inc

    EIN 921712947 · Headquarters: MONUMENT, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  20. Alamosa River Foundation

    EIN 820557752 · Headquarters: La Jara, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. All About Community Gardens

    EIN 821253759 · Headquarters: Dove Creek, CO, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Alliance Earth

    EIN 460694318 · Headquarters: Glenwood Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Alpen-glow Inc

    EIN 371865347 · Headquarters: STEAMBOAT SPRINGS, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  24. Alpine Outdoor Association

    EIN 872107455 · Headquarters: Lake City, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Altai Institute for Research and Conservation Inc

    EIN 824253427 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Always Choose Adventures

    EIN 831239243 · Headquarters: IDAHO SPRINGS, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. Always on Energy Research

    EIN 932070538 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. American Green Cross

    EIN 651299950 · Headquarters: pueblo, CO, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  29. American Rose Society

    EIN 581783035 · Headquarters: Durango, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  30. American Rose Society

    EIN 581783658 · Headquarters: Loveland, CO, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  31. American Rose Society

    EIN 752980868 · Headquarters: Grand Junction, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  32. American Solar Energy Society Inc

    EIN 591768923 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. Americans for Nuclear Energy

    EIN 521134990 · Headquarters: AURORA, CO, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  34. Animas - La Plata Operation Maintenance and Replacement Association

    EIN 272243048 · Headquarters: Durango, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Animas Conservancy

    EIN 841496916 · Headquarters: Durango, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  36. Anthem Clean Air and Water Inc

    EIN 814536112 · Headquarters: Broomfield, CO, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  37. Aquarius Water Experience Foundation

    EIN 882535604 · Headquarters: ASPEN, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Arapaho & Roosevelt National Forests Foundation

    EIN 830369361 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  39. Archuleta County Farm Bureau

    EIN 273444037 · Headquarters: Pagosa Springs, CO, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  40. Arctic Arts Project

    EIN 833054178 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Areas - American Renewable Energy Advocates Society -

    EIN 271895792 · Headquarters: Monument, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Arei Inc

    EIN 275216186 · Headquarters: Aspen, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Arkansas Groundwater Users Associat

    EIN 841268595 · Headquarters: FOWLER, CO, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990

  44. Arkansas River Basin Water Forum

    EIN 383937559 · Headquarters: Pueblo, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Arkansas River Conservation Cooperative

    EIN 842507959 · Headquarters: SALIDA, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  46. Arkansas River Trust

    EIN 841539644 · Headquarters: SALIDA, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Arkansas River Watershed Collaborative

    EIN 823840102 · Headquarters: WESTCLIFFE, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Arkansas Valley Audubon Society Inc

    EIN 840767071 · Headquarters: PUEBLO, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Arkansas Valley Preservation Land Tr

    EIN 651190123 · Headquarters: La Junta, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  50. Arroyo Trail Adventure Inc

    EIN 203062554 · Headquarters: Rye, CO, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  51. Art Parts Creative Reuse Center

    EIN 462419105 · Headquarters: Boulder, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. Arvada Gardeners

    EIN 841334253 · Headquarters: Arvada, CO, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  53. Aspen Center for Environmental Studies

    EIN 237042291 · Headquarters: ASPEN, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  54. Aspen Center for Environmental Studies Endowment Fund

    EIN 010724451 · Headquarters: ASPEN, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  55. Aspen Glen Environmental Sanctuary

    EIN 680602115 · Headquarters: Carbondale, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  56. Aspen International Mountain Foundation

    EIN 470850496 · Headquarters: Aspen, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Aspen Valley Land Trust

    EIN 840574754 · Headquarters: Carbondale, CO, United States · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Association for Information and Image Management International

    EIN 841243013 · Headquarters: Highlands Ranch, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  59. Association for Native American Sacred Trees and Places

    EIN 824231335 · Headquarters: Larkspur, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Atlas Arckology Inc

    EIN 841418184 · Headquarters: Placerville, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Atmosphere Conservancy

    EIN 263639902 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Austin Bluffs Conservation Association

    EIN 841551726 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  63. Axe and Snax

    EIN 844880778 · Headquarters: Pinecliffe, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Axolotl Renewable Energy Fund

    EIN 993035641 · Headquarters: Littleton, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Back Country Horsemen of America

    EIN 841192608 · Headquarters: Canon City, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Back Country Horsemen of Colorado

    EIN 841522692 · Headquarters: DURANGO, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Back the Wild Llc

    EIN 844791742 · Headquarters: Evergreen, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Backcountry Alliance

    EIN 853712557 · Headquarters: Montrose, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  69. Bags from Rags

    EIN 392607158 · Headquarters: Conifer, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Bands for Lands

    EIN 841364135 · Headquarters: Longmont, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Barker Hunter Vistara Family Foundation Fka Barker-Hunter Family Foundation

    EIN 841481188 · Headquarters: Greenwood Village, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. BARR LAKE AND MILTON RESERVOIR WATERSHED CO Samantha Miller

    EIN 651250027 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Barrio Electrico

    EIN 843087671 · Headquarters: FORT COLLINS, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Basecamp Explorer Foundation USA

    EIN 263979738 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Be Zero

    EIN 475498789 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  76. Bear Creek Watershed Foundation

    EIN 844250188 · Headquarters: Lakewood, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  77. Bear River Watershed Council

    EIN 870668075 · Headquarters: Mancos, CO, USA · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  78. Bear Trust International

    EIN 810527298 · Headquarters: WINDSOR, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Beat the Batch

    EIN 331801037 · Headquarters: Ft Collins, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Beaver Ponds Environmental Education Center

    EIN 271422478 · Headquarters: Evergreen, CO, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990

  81. BeeNewable

    EIN 851459426 · Headquarters: Lakewood, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. Belmont Forum Foundation

    EIN 393023242 · Headquarters: Wellington, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Betty Ford Alpine Gardens

    EIN 742395097 · Headquarters: Vail, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. Bicycle Forward

    EIN 872230704 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Big Creek Reservior Company

    EIN 264144937 · Headquarters: COLLBRAN, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Big Dry Creek Watershed Assoc

    EIN 562491086 · Headquarters: BROOMFIELD, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Big Thompson Watershed Coalition

    EIN 810753905 · Headquarters: LOVELAND, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Big Thompson Watershed Forum Inc

    EIN 061682189 · Headquarters: FORT COLLINS, CO, USA · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990

  89. Black Forest Together Inc

    EIN 463430400 · Headquarters: COLORADO SPRINGS, CO, USA · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990

  90. Black Forest Trails Association Inc

    EIN 030423074 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Blue Creek Foundation for the Environmen

    EIN 320168815 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-PF

  92. Blue Elements

    EIN 854365228 · Headquarters: Canon City, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  93. Blue Mountain Forest Stewardship Initiative

    EIN 463702662 · Headquarters: Golden, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Blue River Watershed Group

    EIN 201771307 · Headquarters: SILVERTHORNE, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Blue Verve Project Inc

    EIN 851442024 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Bluff Lake Nature Center

    EIN 841305302 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Boulder Area Trails Coalition

    EIN 841402239 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Boulder Carshare

    EIN 841472528 · Headquarters: Boulder, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Boulder Climbing Community

    EIN 453623399 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Boulder County Mounted Search & Rescue

    EIN 753078651 · Headquarters: Longmont, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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