Data / Nonprofits / Wisconsin / Oshkosh / Philanthropy, voluntarism and grantmaking foundations
Philanthropy, voluntarism and grantmaking foundations nonprofits in Oshkosh, WI: 8 registered with the IRS
8 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in Oshkosh, WI, 8 of them 501(c)(3) charities; the 3 that report revenue took in $16.1 million. The largest by revenue: Oshkosh Area Community Foundation Corporation ($15 million), Oshkosh Area Community Property Corporation ($1 million), Friends of Oshkosh Parks Inc ($60,142).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Oshkosh Area Community Foundation Corporation | 501(c)(3) | 2001 | $15 million | $200.8 million | 2025-06 |
| Oshkosh Area Community Property Corporation | 501(c)(3) | 2010 | $1 million | $2 million | 2025-06 |
| Friends of Oshkosh Parks Inc | 501(c)(3) | 2004 | $60,142 | $328,265 | 2025-06 |
| Gramie Jean Foundation Inc | 501(c)(3) | 2009 | $1.4 million | 2025-12 | |
| Harenburg Family Foundation Inc | 501(c)(3) | 2017 | $568,577 | 2025-12 | |
| Nourishment and Coats Inc | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Oshkosh Kiwanis Foundation Incorporated | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| The Jek Foundation Inc | 501(c)(3) | 2000 | $36.1 million | 2024-12 |
Other causes in Oshkosh, WI
- Education 39
- Recreation and sports 39
- Human services 28
- Youth development 28
- Arts, culture and humanities 26
- Religion-related 25
- Community improvement and capacity building 10
- Mental health and crisis intervention 8
- Public and societal benefit 7
- Health care 7
- Housing and shelter 7
- Food, agriculture and nutrition 6
- Animal-related 6
- Environment 4
- Science and technology 3
- Employment 3
Every nonprofit in Oshkosh, WI · Philanthropy, voluntarism and grantmaking foundations 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.