Data / Nonprofits / Wisconsin / Elkhorn / Environment
Environment nonprofits in Elkhorn, WI: 6 registered with the IRS
6 environment nonprofits are registered with the IRS in Elkhorn, WI, 6 of them 501(c)(3) charities; the 2 that report revenue took in $657,013. The largest by revenue: Mandaamin Institute Inc ($559,933), Kettle Moraine Land Trust ($97,080).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Mandaamin Institute Inc | 501(c)(3) | 2011 | $559,933 | $587,994 | 2024-12 |
| Kettle Moraine Land Trust | 501(c)(3) | 2001 | $97,080 | $1 million | 2024-12 |
| Lake Wandawega Improvement Association Inc | 501(c)(3) | 2007 | $0 | $0 | 2024-12 |
| Walworth County Lakes Association Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Walworth County Master Gardener Volunteer Association Inc | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Worthless Lots Land Conservancy Inc | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
Other causes in Elkhorn, WI
- Youth development 22
- Education 14
- Recreation and sports 12
- Human services 7
- Philanthropy, voluntarism and grantmaking foundations 5
- Religion-related 5
- Community improvement and capacity building 5
- Health care 4
- Crime and legal-related 3
- Animal-related 3
- Public safety, disaster preparedness and relief 3
- Arts, culture and humanities 3
Every nonprofit in Elkhorn, WI · 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.