Data / Nonprofits / Wisconsin / Oostburg
Nonprofits in Oostburg, WI: 22 registered with the IRS
22 nonprofits are registered with the IRS in Oostburg, WI, 18 of them 501(c)(3) charities; the 2 that report revenue took in $3.5 million. The largest by revenue: Oostburg Christian School Association ($3.4 million), International Union United Auto Aerospace & Agricultural Workers ($50,349). Most common causes: philanthropy, voluntarism and grantmaking foundations (3), religion-related (3), education (3).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Oostburg Christian School Association | Education | 501(c)(3) | 1974 | $3.4 million | $7.4 million | 2025-06 |
| International Union United Auto Aerospace & Agricultural Workers | 501(c)(5) | 1941 | $50,349 | $35,474 | 2024-12 | |
| Eco Presbytery of the Harvest | Religion-related | 501(c)(3) | 2013 | |||
| First Christian Reformed Church | 501(c)(3) | 1975 | 2011-12 | |||
| First Reformedchurch of Ostburg | 501(c)(3) | 1968 | ||||
| Friends of the Oostburg Public Library | 501(c)(3) | 1983 | $0 | $0 | 2025-12 | |
| Islamic Society of Sheboygan | Religion-related | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| La Societe Voiture Des 40 Hommes Et 8 Chevaux | 501(c)(19) | 1967 | $0 | $0 | 2025-12 | |
| Oostburg Area United Fund Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1978 | $0 | $0 | 2026-07 |
| Oostburg Athletic Association | Recreation and sports | 501(c)(3) | 2009 | $0 | $0 | 2025-03 |
| Oostburg Community Educational Foundation Inc | Education | 501(c)(3) | 2004 | $0 | $0 | 2024-12 |
| Oostburg Pto Inc | Education | 501(c)(3) | 2014 | $0 | $0 | 2025-07 |
| Our Home Christian Ministries Inc | Religion-related | 501(c)(3) | 1999 | $1 million | 2024-12 | |
| Pink Heals Sheboygan County | Human services | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Purr-Fect Match Animal Rescue | Animal-related | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Stagew Inc | Community improvement and capacity building | 501(c)(4) | 2016 | $0 | $0 | 2025-12 |
| Tamarisk Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | |||
| United Food and Commercial Workers International Union | 501(c)(5) | 1941 | $0 | $0 | 2025-12 | |
| Vander Ploeg Family Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $258,263 | 2025-12 | |
| Wauwatose Savings & Loan Foundation | 501(c)(3) | 1986 | $1.9 million | 2025-12 | ||
| Wisconsin Great Lakes Coalition Inc | Environment | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Worldwide Dragon Shooting Day Inc | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
By cause in Oostburg, WI
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.