Data / Nonprofits / Wisconsin / Marathon
Nonprofits in Marathon, WI: 31 registered with the IRS
31 nonprofits are registered with the IRS in Marathon, WI, 23 of them 501(c)(3) charities; the 8 that report revenue took in $3.7 million. The largest by revenue: Ginseng Board of Wisconsin Inc ($1.7 million), Little Lions Childcare ($683,943), St Anthonys of Marathon Inc ($522,473). Most common causes: education (5), human services (3).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Ginseng Board of Wisconsin Inc | Community improvement and capacity building | 501(c)(6) | 1999 | $1.7 million | $1.5 million | 2025-06 |
| Little Lions Childcare | Human services | 501(c)(3) | 2020 | $683,943 | $90,333 | 2024-12 |
| St Anthonys of Marathon Inc | Human services | 501(c)(3) | 2014 | $522,473 | $2.9 million | 2025-12 |
| Marathon Area Swim Association Inc | 501(c)(3) | 1988 | $464,517 | $500,226 | 2025-12 | |
| New Life Pet Adoption Center Inc | Animal-related | 501(c)(3) | 2002 | $222,526 | $639,592 | 2025-12 |
| Mac Raiders Inc | Education | 501(c)(3) | 2020 | $99,877 | $183,096 | 2025-12 |
| American Legion | 501(c)(19) | 1946 | $45,308 | $103,361 | 2025-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1969 | $27,893 | $31,743 | 2025-12 | |
| American Legion Auxiliary | 501(c)(19) | 1946 | $0 | $0 | 2025-09 | |
| Brantwood Co-Operative Park Association | 501(c)(7) | 1937 | $0 | $0 | 2025-12 | |
| Catholic Order of Foresters | 501(c)(8) | 1972 | $0 | $0 | 2025-12 | |
| Central Wisconsin Retrouvaille Inc | Human services | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Hamburg Fire Department Auxilary | Public safety, disaster preparedness and relief | 501(c)(3) | 2025 | |||
| Knights of Columbus Council 16280 | Mutual and membership benefit | 501(c)(8) | 2019 | $0 | $0 | 2025-12 |
| Marathon Area Elementary School and Marathon Venture Academy Pto | Education | 501(c)(3) | 2021 | $0 | $0 | 2026-06 |
| Marathon City 2020 LTD | Arts, culture and humanities | 501(c)(3) | 2025 | $0 | $0 | 2021-12 |
| Marathon Post Prom Inc | Youth development | 501(c)(3) | 2025 | |||
| Marathon School District Foundation Special Projects Fund Inc | Education | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Marathon Trap & Sportsmen Club Inc | Recreation and sports | 501(c)(7) | 2018 | $0 | $0 | 2025-12 |
| Marathon Venture Academy Incorporated | Education | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Marth Foundtion LTD | 501(c)(3) | 1983 | $126,117 | 2026-05 | ||
| Nativity of the Blessed Virgin Mary Parish | 501(c)(3) | 1946 | ||||
| Rad- Rescue Adopt Donate Inc | Animal-related | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Raymond and Marie Goldbach Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $58.5 million | 2024-12 | |
| Robbins Foundation | Education | 501(c)(3) | 2022 | $9,306 | 2025-12 | |
| Seraphic Adorers of the Child Jesus Inc | 501(c)(3) | 1946 | ||||
| Sonnentag American Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $19,126 | 2024-12 | |
| Sonnentag Foundation LTD | 501(c)(3) | 1988 | $43.4 million | 2025-12 | ||
| St Matthews Evangelical Lutheran Church Inc | 501(c)(3) | 1966 | ||||
| St Peter Lutheran Church | 501(c)(3) | 1988 | ||||
| Zions Lutheran Church | 501(c)(3) | 1966 |
By cause in Marathon, 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.