Largest nonprofits in Wisconsin by revenue
| # | Nonprofit | City | Focus area | Revenue |
|---|---|---|---|---|
| 1 | Aurora Health Care Inc | Milwaukee | Not listed | $7.4 billion |
| 2 | Froedtert Memorial Lutheran Hospital Inc | Milwaukee | Health Care | $2.9 billion |
| 3 | The Medical College Of Wisconsin Inc | Milwaukee | Education | $1.8 billion |
| 4 | Gundersen Lutheran Medical Center Inc | La Crosse | Health Care | $1.7 billion |
| 5 | University Of Wisconsin Medical Foundation Inc | Middleton | Health Care | $1.6 billion |
| 6 | McHs Hospitals Inc | Marshfield | Health Care | $1.5 billion |
| 7 | Froedtert Thedacare Health Inc | Milwaukee | Health Care | $1.4 billion |
| 8 | Gundersen Lutheran Administrative Services Inc | La Crosse | Health Care | $1.3 billion |
| 9 | Childrens Hospital Of Wisconsin Inc | Milwaukee | Health Care | $1.0 billion |
| 10 | Bellin Memorial Hospital Inc | Green Bay | Health Care | $906.6 million |
| 11 | Marquette University | Milwaukee | Education | $840.0 million |
| 12 | Community Care Inc | Brookfield | Human Services | $807.6 million |
| 13 | Aspirus Wausau Hospital Inc | Wausau | Health Care | $792.0 million |
| 14 | Mercy Health System Corporation | Janesville | Health Care | $769.8 million |
| 15 | Prohealth Waukesha Memorial Hospital Inc | Waukesha | Health Care | $693.8 million |
| 16 | University Of Wisconsin Foundation | Madison | Education | $680.9 million |
| 17 | Meriter Hospital Inc | Madison | Health Care | $643.3 million |
| 18 | Marshfield Clinic Inc | Marshfield | Health Care | $596.5 million |
| 19 | Group Health Cooperative Of South Central Wi | Madison | Health Care | $518.1 million |
| 20 | Thedacare Regional Medical Center- Appleton Inc | Appleton | Health Care | $492.1 million |
| 21 | Froedtert South Inc | Kenosha | Health Care | $486.9 million |
| 22 | Common Ground Healthcare Cooperative | Brookfield | Health Care | $459.4 million |
| 23 | Chorus Community Health Plans Inc | Milwaukee | Health Care | $448.7 million |
| 24 | Thedacare Inc | Neenah | Health Care | $432.6 million |
| 25 | Froedtert & The Medical College Of Wisconsin Community Physicians Inc | Menomonee Falls | Health Care | $431.0 million |
The full list includes all 1,977 Wisconsin nonprofits with $1M+ revenue, with street address, ZIP, EIN, assets, income and tax period, plus every other state.
Wisconsin cities with the most $1M+ nonprofits
- Milwaukee: 395
- Madison: 285
- Green Bay: 68
- Appleton: 62
- Waukesha: 49
- La Crosse: 43
- Oshkosh: 34
- Eau Claire: 33
- Sheboygan: 33
- Wausau: 32
Most common focus areas
- Human Services: 319
- Health Care: 248
- Education: 243
- Arts, Culture & Humanities: 107
- Housing & Shelter: 87
- Philanthropy, Voluntarism & Grantmaking Foundations: 86
- Recreation & Sports: 69
- Environment: 56
Where does this data come from?
The IRS Exempt Organizations Business Master File, downloaded in October 2026. Figures are as reported on each organization's latest return on file with the IRS. Personal contact names are not included.