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
- Southeast Colorado Resource Conservation and Development Inc
EIN 841210565 · Headquarters: Eads, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Southeast Colorado Two Shot Wildlife Habitat Foundation
EIN 840606965 · Headquarters: LAMAR, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Southern Colorado Climbers Resource & Action Group - Soco Crag
EIN 273329442 · Headquarters: Pueblo West, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Southern Colorado Hut Initiative
EIN 412645886 · Headquarters: Salida, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Southern Plains Land Trust
EIN 841470479 · Headquarters: Lamar, Colorado, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Southwest Energy Efficiency Project
EIN 841593046 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Southwest Recycling Initiatives
EIN 834590554 · Headquarters: Dolores, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sowers Harvest
EIN 851454299 · Headquarters: PLATTEVILLE, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Spanish Peaks Alliance for Wildfire Protection
EIN 833584908 · Headquarters: La Veta, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Spiral R-evolution
EIN 393512415 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Spivey Family Foundation
EIN 990425837 · Headquarters: GOLDEN, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Stand Up for Rivers
EIN 273310482 · Headquarters: Telluride, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Starflower Foundation
EIN 911748612 · Headquarters: DIVIDE, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- START International Inc
EIN 271363108 · Headquarters: Fort Collins, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Steamboat Allstars Inc
EIN 472066430 · Headquarters: Steamboat Springs, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Stem Enrichment Project
EIN 274536347 · Headquarters: Evergreen, CO, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Steve Stone Coral Reef Foundation
EIN 453175163 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Stewards of Golden Open Space
EIN 834048637 · Headquarters: Golden, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stoic Cutthroats
EIN 923517800 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stop Over Development Elbert Couty
EIN 822216717 · Headquarters: Elizabeth, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Stormwater Equipment Manufacturers Assoc
EIN 800291907 · Headquarters: Littleton, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Stranded Gas Processors Association
EIN 612053975 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Summerhome Garden
EIN 990605218 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Summit and Shore Alliance
EIN 995050897 · Headquarters: Arvada, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sustainable Alliance Inc
EIN 202887973 · Headquarters: BOULDER, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Crested Butte Inc
EIN 813225480 · Headquarters: Crested Butte, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Development Strategies Group
EIN 261176011 · Headquarters: DENVER, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sustainable Grand
EIN 922514155 · Headquarters: Louisville, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sustainable Pueblo 2050
EIN 392605537 · Headquarters: Pueblo, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Resilient Longmont
EIN 821521892 · Headquarters: Longmont, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Settings
EIN 841610236 · Headquarters: CARBONDALE, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sustainable Systems of Colorado
EIN 271947300 · Headquarters: THORNTON, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sustainable Tourism on Vashon
EIN 208839751 · Headquarters: denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Ways Inc
EIN 261707320 · Headquarters: WESTCLIFFE, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sustainable Windsor Colorado
EIN 372132160 · Headquarters: Windsor, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sycamore Foundation
EIN 843246945 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Synergy Ecological Restoration Inc
EIN 472417086 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Table Mountains Conservation Fund I
EIN 841468340 · Headquarters: GOLDEN, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Tailholt Community Garden Inc
EIN 472618450 · Headquarters: SEVERANCE, CO, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- Techne
EIN 261199185 · Headquarters: Louisville, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Techniquest Geographic Inc
EIN 421591090 · Headquarters: Louisvill, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Teller Trail Team
EIN 992528349 · Headquarters: Woodland Park, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Terra Firma Rainwater Collective
EIN 844015942 · Headquarters: Carbondale, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Terraset
EIN 881122351 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Adams County Trails and Open Space Foundation Inc
EIN 742254743 · Headquarters: Henderson, CO, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- The Alliance For Collective Action
EIN 421622670 · Headquarters: Denver, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Base Line Land and Reservoir Company
EIN 846028163 · Headquarters: LONGMONT, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990
- The Bow Mar Foundation
EIN 841327995 · Headquarters: Bow Mar, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Broadmoor Garden Club
EIN 841473952 · Headquarters: Colorado Springs, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Catamount Center
EIN 841438996 · Headquarters: WOODLAND PARK, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Cayton Rangers Station Foundation
EIN 208691640 · Headquarters: Rifle, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Colorado Mountain Club
EIN 840410760 · Headquarters: GOLDEN, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Colorado Rio Grande Restoration Foundation
EIN 753169057 · Headquarters: ALAMOSA, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- The Ember Alliance
EIN 861792036 · Headquarters: FORT COLLINS, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- The Emily Tintrup Dealy Foundation
EIN 933052731 · Headquarters: Breckenridge, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Foundation for Natural Resources and Energy Law
EIN 846037688 · Headquarters: BROOMFIELD, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Friends of Colorado State Parks
EIN 271478153 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Garden Project of Southwest Colorado
EIN 201682026 · Headquarters: DURANGO, CO, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ
- The Green Life Online Inc
EIN 770276028 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- The Greenlands Reserve
EIN 841485415 · Headquarters: Frisco, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The High Mountain Masters
EIN 208883003 · Headquarters: ASPEN, CO, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- The Kiva Center
EIN 814937192 · Headquarters: Boulder, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Michael P Dowling Foundation
EIN 841366597 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Peoples Bees
EIN 372043189 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Proxy Group Company
EIN 742467675 · Headquarters: ORDWAY, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Rincon Water Cooperative
EIN 161768526 · Headquarters: Littleton, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- The Trust for Land Restoration Inc
EIN 841523131 · Headquarters: Ridgway, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Water Research Foundation
EIN 136211384 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Western Way Organization
EIN 814204053 · Headquarters: Englewood, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Thompson Divide Coalition-a Colorado Nonprofit Corporation
EIN 454782560 · Headquarters: Carbondale, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Thorne Ecological Institute
EIN 846029250 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Three Lakes Watershed Association Inc
EIN 841140934 · Headquarters: Grand Lake, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Three Rivers Alliance
EIN 263070018 · Headquarters: WRAY, CO, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Thunder River Foundation
EIN 841444057 · Headquarters: aspen, CO, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Tommys Treehaus
EIN 934338963 · Headquarters: Arvade, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Top of the Pines Inc
EIN 841601734 · Headquarters: RIDGWAY, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Trail Group Inc
EIN 841052921 · Headquarters: OURAY, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Trail of the Ancients Byway Association
EIN 262483595 · Headquarters: Cortez, CO, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Trail Runner Volunteers
EIN 853455080 · Headquarters: Arvada, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Trailcology
EIN 461362406 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Trails for All
EIN 831200331 · Headquarters: Westcliffe, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Trails Preservation Alliance
EIN 261532509 · Headquarters: GREELEY, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Trashy Trail Runners Inc
EIN 852074850 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Tree Champs
EIN 993419596 · Headquarters: Arvada, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Trees Please Inc
EIN 742543246 · Headquarters: PUEBLO, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Trees Water and People
EIN 841462044 · Headquarters: FORT COLLINS, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Tri-lakes Preservation
EIN 332649716 · Headquarters: Monument, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Triple Bottom Line Foundation
EIN 841592286 · Headquarters: Denver, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Trout Unlimited
EIN 742047357 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N
- Tucker Pond Improvement Association
EIN 822076728 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Twin Lakes Action Group Inc
EIN 474405560 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Two Rivers Wildfire Coalition
EIN 852609810 · Headquarters: Clifton, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Un-bottle and Protect Chaffee County Water
EIN 862858249 · Headquarters: Salida, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Uncompahgre Com Inc
EIN 841545251 · Headquarters: MONTROSE, CO, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990
- Uncompahgre Watershed Partnership a Colorado Nonprofit Corporation
EIN 462946756 · Headquarters: Ridgway, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- United Global Public
EIN 811058025 · Headquarters: Castle Rock, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- United Mineral Network
EIN 991694981 · Headquarters: DENVER, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- United States Hut Alliance
EIN 922204448 · Headquarters: Aspen, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- United States Society on Dams
EIN 136168283 · Headquarters: AURORA, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Upper Colorado River Alliance
EIN 451209529 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF