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
- Rocky Mountain Radiological Society
EIN 846048480 · Headquarters: ENGLEWOOD, CO, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Rocky Mountain Raptor Program
EIN 900131614 · Headquarters: FORT COLLINS, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Rocky Mountain Sport Riders Inc
EIN 273183920 · Headquarters: Avon, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Rocky Mountain Water Environment Association
EIN 840777358 · Headquarters: Denver, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Rocky Mountain Watershed Network
EIN 201176340 · Headquarters: Marvel, CO, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Rocky Mountain Weavers Guild
EIN 846111059 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Rocky Mountain Wild
EIN 841512852 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Rooney Road Recycling Center Foundation
EIN 205457738 · Headquarters: Golden, CO, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Rose Roots Community Garden
EIN 871992629 · Headquarters: ARVADA, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ross-osborn Family Foundation
EIN 861801284 · Headquarters: Arvada, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Round Mountain Institute Inc
EIN 431954616 · Headquarters: Paonia, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Rowers for Healthy Watersheds
EIN 332961771 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Roxborough Conservancy
EIN 923022262 · Headquarters: Littleton, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Roxborough Park Foundation Conserv & Environmental Education Organiz
EIN 823229220 · Headquarters: LITTLETON, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Royal Gorge Preservation Project
EIN 833018103 · Headquarters: Canon City, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Royal Gorge River Initiative Organization
EIN 851358959 · Headquarters: Canon City, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Rtc Impact Fund
EIN 464188569 · Headquarters: BOULDER, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Rugged Research Seedling Foundation
EIN 933788194 · Headquarters: Loveland, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Rural Water Foundation of Douglas County
EIN 843730628 · Headquarters: Littleton, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Rv Toan Foundation
EIN 464280009 · Headquarters: OURAY, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- S Lazy U Trout Club
EIN 840795066 · Headquarters: CREEDE, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sacred Contract
EIN 333907496 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Safe Skies Colorado Inc
EIN 931746959 · Headquarters: CENTENNIAL, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sagrada Botanical Gardens
EIN 872343478 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Saint Vrain Creek Coalition
EIN 475108072 · Headquarters: Longmont, CO, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Salida Area Parks Open Space & Trails
EIN 841545018 · Headquarters: Salida, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Salida Mountain Trails
EIN 462608985 · Headquarters: Salida, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Samcom
EIN 742239851 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Juan Backcountry Horsemen
EIN 261133068 · Headquarters: Pagosa Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Juan Citizens Alliance
EIN 841447465 · Headquarters: Durango, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Juan Mountains Association
EIN 237437775 · Headquarters: Durango, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Juan Outdoor Club
EIN 742811342 · Headquarters: Pagosa Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Juan Resource Conservation and Development Council
EIN 742408579 · Headquarters: Durango, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Luis Valley Ecosystem Council Inc
EIN 841434755 · Headquarters: Alamosa, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Luis Valley Resource Conservation &
EIN 742477074 · Headquarters: ALAMOSA, CO, USA · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ
- San Miguel Conservation Foundation
EIN 841248759 · Headquarters: TELLURIDE, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sangre De Christo Acequia Association
EIN 371551174 · Headquarters: San Luis, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sangre De Cristo National Heritage Area
EIN 800349819 · Headquarters: ALAMOSA, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sarara Institute
EIN 822386824 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Save Bear Creek Lake Park
EIN 880521285 · Headquarters: Morrison, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save Belmar Park
EIN 934553811 · Headquarters: lakewood, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Save Cheyenne
EIN 812256830 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save Our Grid Inc
EIN 933026337 · Headquarters: EATON, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Save Our Saint Vrain Valley Inc
EIN 821026091 · Headquarters: Hygiene, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save South Park
EIN 822805356 · Headquarters: Fairplay, CO, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Save Species Society Inc
EIN 850795495 · Headquarters: Broomfield, CO, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Save the Aurora Reservoir
EIN 922641450 · Headquarters: Aurora, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save the Cloud Forests Foundation Inc
EIN 205969847 · Headquarters: Centennial, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save the Mesas Inc
EIN 841493777 · Headquarters: Golden, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Save the Poudre Poudre Waterkeeper
EIN 271961538 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Save the Slate
EIN 872138146 · Headquarters: CRESTED BUTTE, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Save the Worlds Rivers Fka Save the Colorado
EIN 471936330 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Saving Our Streams
EIN 274172704 · Headquarters: Aspen, CO, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Savory Instituteorg Inc
EIN 454134319 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Seas of Trees
EIN 844578242 · Headquarters: TELLURIDE, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Second Chance Wildlife Rehabilation Inc
EIN 841283993 · Headquarters: Pueblo, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Second Start Community Garden
EIN 841533337 · Headquarters: Longmont, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- See Economic Solutions Institute
EIN 452723618 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Senior Water of the Rio Grande
EIN 472021491 · Headquarters: Monte Vista, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sensible Environmental Solutions
EIN 841372232 · Headquarters: Grand Junction, CO, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Shadowcliff
EIN 753008627 · Headquarters: GRAND LAKE, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Shameless Self-promotion Productions Inc
EIN 854178837 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Share the Slate
EIN 811208868 · Headquarters: Crested Butte, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sheep Mountain Alliance
EIN 841294894 · Headquarters: TELLURIDE, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Sherwood Irrigation Co
EIN 840318424 · Headquarters: Severance, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Shires Garden
EIN 811218151 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sibinacocha Watershed Project
EIN 473995715 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Simply Bee Conservation
EIN 874487650 · Headquarters: Lyons, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sisk-a-dee Environmental Organization
EIN 841567738 · Headquarters: GUNNISON, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sister Blandina Gardens
EIN 850824884 · Headquarters: Colorado Springs, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Six Basins Project Inc
EIN 821032179 · Headquarters: OURAY, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Sloan's Lake Park Foundation
EIN 833989461 · Headquarters: DENVER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sloans Lake Citizens Group
EIN 841230656 · Headquarters: DENVER, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Slv Confined Aquifer Sustainability Inc
EIN 472541015 · Headquarters: Monte Vista, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Slv Recycles Inc
EIN 841150833 · Headquarters: Alamosa, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Small Town Project
EIN 842245807 · Headquarters: ROCKY FORD, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sme Foundation
EIN 841175450 · Headquarters: ENGLEWOOD, CO, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990
- Smogfree Denver
EIN 843265364 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Snowforeverorg
EIN 274111908 · Headquarters: Fort Collins, CO, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Snowmass-Capitol Creek Caucus
EIN 841230969 · Headquarters: Snowmass, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Soaring Eagle Ecology Center
EIN 651321376 · Headquarters: Red Feather Lakes, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Social Bridge Dba Coventure
EIN 821024452 · Headquarters: GLENWOOD SPRINGS, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Society of Black Solar Professionals
EIN 853292125 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Society of Women Environmental Professionals
EIN 841724921 · Headquarters: Broomfield, CO, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Solar Barn Raising
EIN 811170935 · Headquarters: DURANGO, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Solar Energy International
EIN 841223691 · Headquarters: PAONIA, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Solmass Foundation
EIN 993011884 · Headquarters: CHERRY HILLS VILLAGE, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Solve & Save Open Lands Vistas & the Environment
EIN 841587180 · Headquarters: Idaho Springs, CO, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Solve Clear Creek County
EIN 833877907 · Headquarters: Idaho Springs, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sos Foundation
EIN 943443418 · Headquarters: Paonia, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Soulaani Environmental Alliance
EIN 994496686 · Headquarters: Commerce City, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Source International Us
EIN 813816070 · Headquarters: Boulder, CO, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- South Fork Busters Snowmobile Club
EIN 841121003 · Headquarters: South Fork, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- South Metro Land Conservancy
EIN 841275296 · Headquarters: Littleton, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- South Platte Forum
EIN 831502771 · Headquarters: Berthoud, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- South Platte Lower River Group Inc
EIN 841349677 · Headquarters: Sterling, CO, USA · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ
- South Platte River Waterkeeper
EIN 843758727 · Headquarters: Denver, CO, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- South Side Lateral Company
EIN 422279208 · Headquarters: Fort Morgan, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- South Tollgate Ditch Company
EIN 842304737 · Headquarters: Longmont, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Southeast & East Central Recycling Association
EIN 841302326 · Headquarters: WALSENBURG, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990