Data / Nonprofits / Colorado / Littleton / Environment
Environment nonprofits in Littleton, CO: 20 registered with the IRS
20 environment nonprofits are registered with the IRS in Littleton, CO, 17 of them 501(c)(3) charities; the 5 that report revenue took in $2.2 million. The largest by revenue: Denver Audubon Society ($1.3 million), Colorado Ag Water Alliance ($766,314), Colorado Wastewater Utility Council ($85,195).
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Every organization, largest by revenue first
Other causes in Littleton, CO
- Education 131
- Religion-related 95
- Recreation and sports 92
- Human services 88
- Philanthropy, voluntarism and grantmaking foundations 66
- Arts, culture and humanities 60
- Community improvement and capacity building 32
- Animal-related 25
- Mental health and crisis intervention 22
- Youth development 21
- International, foreign affairs and national security 15
- Diseases, disorders and medical disciplines 13
- Health care 13
- Housing and shelter 13
- Public and societal benefit 12
- Crime and legal-related 12
- Civil rights, social action and advocacy 6
- Medical research 6
- Mutual and membership benefit 5
- Food, agriculture and nutrition 3
- Employment 3
- Public safety, disaster preparedness and relief 3
- Science and technology 3
Every nonprofit in Littleton, CO · Environment nonprofits across the state · Nonprofits in every city of the state
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.