Data / Nonprofits / Iowa / Mason City / Public and societal benefit
Public and societal benefit nonprofits in Mason City, IA: 4 registered with the IRS
4 public and societal benefit nonprofits are registered with the IRS in Mason City, IA, 2 of them 501(c)(3) charities.
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Clausen-Worden Post 101 Dept of Iowa American Legion Auxiliary | 501(c)(19) | 2014 | $0 | $0 | 2025-06 |
| Daughters of Union Veterans of the Civil War 1861-1865 | 501(c)(3) | 2014 | $0 | $0 | 2025-08 |
| Daughters of Union Veterans of the Civil War 1861-1865 | 501(c)(3) | 2014 | $0 | $0 | 2025-08 |
| Department of Iowa Auxiliary To the Veterans of Foreign Wars | 501(c)(19) | 2009 | $0 | $0 | 2026-06 |
Other causes in Mason City, IA
- Education 17
- Philanthropy, voluntarism and grantmaking foundations 15
- Recreation and sports 14
- Arts, culture and humanities 12
- Community improvement and capacity building 10
- Human services 10
- Religion-related 8
- Health care 7
- Youth development 6
- Housing and shelter 5
- Mental health and crisis intervention 5
- Food, agriculture and nutrition 4
- Public safety, disaster preparedness and relief 3
- Diseases, disorders and medical disciplines 3
Every nonprofit in Mason City, IA · Public and societal benefit 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.