Data / Nonprofits / Wisconsin / Greendale
Nonprofits in Greendale, WI: 55 registered with the IRS
55 nonprofits are registered with the IRS in Greendale, WI, 45 of them 501(c)(3) charities; the 16 that report revenue took in $18.7 million. The largest by revenue: Trillium Foundation Inc ($8.2 million), United Food and Commercial Workers International Union ($5.2 million), United Food & Commercial Workers Unions & Employers Health Plan ($4.1 million). Most common causes: education (8), human services (6), recreation and sports (5).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Trillium Foundation Inc | Health care | 501(c)(3) | 2022 | $8.2 million | $223.8 million | 2024-12 |
| United Food and Commercial Workers International Union | 501(c)(5) | 1941 | $5.2 million | $2.8 million | 2025-05 | |
| United Food & Commercial Workers Unions & Employers Health Plan | 501(c)(9) | 1962 | $4.1 million | $4.5 million | 2024-11 | |
| Friends of Music | Arts, culture and humanities | 501(c)(3) | 2018 | $272,842 | $86,431 | 2025-07 |
| Greendale Lions Foundation | Human services | 501(c)(3) | 2023 | $194,322 | $85,884 | 2025-06 |
| Greendale Playschool Inc | 501(c)(3) | 1977 | $151,231 | $84,160 | 2024-07 | |
| American Legion | 501(c)(19) | 1946 | $148,472 | $408,495 | 2023-12 | |
| Nova-Mba | 501(c)(3) | 2004 | $72,174 | $38,247 | 2024-12 | |
| Greendale Historical Society Inc | 501(c)(3) | 1976 | $67,866 | $238,566 | 2024-12 | |
| Greendale Twi Nite Inc | Youth development | 501(c)(3) | 2007 | $56,555 | $14,892 | 2023-12 |
| Wisconsin Bike Patrol | Public safety, disaster preparedness and relief | 501(c)(3) | 2020 | $52,300 | $19,878 | 2025-12 |
| Greendale Panther Athletic Booster Club | Education | 501(c)(3) | 2004 | $37,620 | $113,233 | 2025-06 |
| Pompeii Mens Club | Community improvement and capacity building | 501(c)(3) | 2015 | $36,304 | $76,888 | 2026-06 |
| Education Foundation of Greendale Inc | Education | 501(c)(3) | 2000 | $29,626 | $113,419 | 2025-06 |
| Milwaukee Young Lawyers Association Inc | 501(c)(6) | 1981 | $29,460 | $181,176 | 2025-06 | |
| Greendale Police K-9 Fund Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 2012 | $25,382 | $109,089 | 2025-12 |
| Aaron John Maier Memorial Fund Inc | Education | 501(c)(3) | 2018 | $54,781 | 2024-12 | |
| Act for the Future Association | Education | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| American Croation Silver Strings Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $0 | $0 | 2025-08 |
| Celtic Nations Pipes & Drums LTD | Arts, culture and humanities | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| College Park School Parent Teacher Organization | Education | 501(c)(3) | 2018 | $0 | $0 | 2026-07 |
| Evangelical Lutheran Church in Amer Ica | 501(c)(3) | 1987 | ||||
| Greater Milwaukee Rose Society Inc | 501(c)(3) | 1983 | $0 | $0 | 2024-12 | |
| Greendale Baptist Church Inc | 501(c)(3) | 1978 | 2011-12 | |||
| Greendale Community Church | Religion-related | 501(c)(3) | 2015 | 2023-12 | ||
| Greendale Entertainment Foundation Inc | Community improvement and capacity building | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Greendale Public Library Foundation Inc | 501(c)(3) | 1988 | $0 | $0 | 2025-12 | |
| Greendale Robotics Inc | Education | 501(c)(3) | 2021 | $0 | $0 | 2026-06 |
| Greendale Step Up To Better Health | Health care | 501(c)(3) | 2017 | $0 | $0 | 2025-11 |
| Greendale Trail Association Inc | Recreation and sports | 501(c)(3) | 2025 | |||
| Greendale Womans Club | 501(c)(4) | 1959 | $0 | $0 | 2023-05 | |
| Greendale Womans Club Co | Community improvement and capacity building | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Highland View Elementary Pto | Education | 501(c)(3) | 2025 | $0 | $0 | 2026-06 |
| International Association of Fire Fighters | 501(c)(5) | 1959 | $0 | $0 | 2024-12 | |
| John A Zachar and Margaret L Lansing Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2026 | $298,366 | 2025-12 | |
| Love Thy Neighbor Foundation Inc | Human services | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Makers Meadow | Human services | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Mares Family Education Foundation Inc | Education | 501(c)(3) | 2018 | $183,909 | 2025-12 | |
| Midwest Military Vehicle Association | Recreation and sports | 501(c)(7) | 2020 | $0 | $0 | 2024-12 |
| Milwaukee Young Lawyers Foundation Inc | 501(c)(3) | 1982 | $0 | $1 | 2025-06 | |
| Our Shepherd Lutheran Church | 501(c)(3) | 1941 | ||||
| Overlook Farms Homes Association Inc | 501(c)(4) | 1961 | $0 | $0 | 2024-12 | |
| People Who Care | 501(c)(3) | 1983 | $0 | $0 | 2026-06 | |
| Rooted in Service | Mental health and crisis intervention | 501(c)(3) | 2026 | |||
| Soa Solutions Inc | Human services | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer | 501(c)(3) | 1946 | $0 | $0 | 2025-12 | |
| South Side Panthers Lacrosse Inc | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Thayagone Family Incorporated | Human services | 501(c)(3) | 2025 | |||
| Tops Club Inc | Health care | 501(c)(3) | 2008 | $0 | $0 | 2026-03 |
| Tourette Association of America Inc | 501(c)(3) | 1982 | $0 | $0 | 2026-02 | |
| Veterans of Foreign Wars of the United States Dept of Wisconsin | 501(c)(19) | 1973 | $0 | $0 | 2025-12 | |
| Waukesha Hash House Harriers | Recreation and sports | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Wisconsin Association of the Deaf | Human services | 501(c)(3) | 2023 | $0 | $0 | 2026-08 |
| Wisconsin Cricket Club | Recreation and sports | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Wisconsin Histology Society | 501(c)(6) | 1975 | $0 | $0 | 2025-12 |
By cause in Greendale, WI
- Education 8
- Human services 6
- Recreation and sports 5
- Community improvement and capacity building 3
- Arts, culture and humanities 3
- Health care 3
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.