Data / Nonprofits / Illinois / Naperville / Environment
Environment nonprofits in Naperville, IL: 17 registered with the IRS
17 environment nonprofits are registered with the IRS in Naperville, IL, 15 of them 501(c)(3) charities; the 9 that report revenue took in $11.2 million. The largest by revenue: Conservation Foundation ($7.5 million), The Dupage River Salt Creek Work Group ($2.3 million), Tree Fund-Tree Research & Education Endowment Fund ($686,919).
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Every organization, largest by revenue first
Other causes in Naperville, IL
- Education 130
- Religion-related 99
- Human services 84
- Arts, culture and humanities 75
- Philanthropy, voluntarism and grantmaking foundations 59
- Recreation and sports 58
- Community improvement and capacity building 34
- Youth development 33
- Health care 31
- International, foreign affairs and national security 22
- Public and societal benefit 21
- Animal-related 21
- Mental health and crisis intervention 17
- Diseases, disorders and medical disciplines 11
- Medical research 7
- Crime and legal-related 7
- Housing and shelter 6
- Science and technology 6
- Food, agriculture and nutrition 5
- Public safety, disaster preparedness and relief 4
- Civil rights, social action and advocacy 4
- Mutual and membership benefit 3
Every nonprofit in Naperville, IL · 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.