Data / Nonprofits / California / Santa Rosa / Mutual and membership benefit
Mutual and membership benefit nonprofits in Santa Rosa, CA: 14 registered with the IRS
14 mutual and membership benefit nonprofits are registered with the IRS in Santa Rosa, CA, 3 of them 501(c)(3) charities; the 4 that report revenue took in $413,467. The largest by revenue: Construction Labor Benefit Trust Fund ($263,136), Melita Heights Mutual Water Company ($98,053), Knights of Columbus ($52,277).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Construction Labor Benefit Trust Fund | 501(c)(9) | 2016 | $263,136 | $80,492 | 2025-12 |
| Melita Heights Mutual Water Company | 501(c)(12) | 2025 | $98,053 | $173,962 | 2025-12 |
| Knights of Columbus | 501(c)(8) | 1940 | $52,277 | $12,991 | 2025-06 |
| Sonoma County Community Architectural Foundation | 501(c)(3) | 2021 | $1 | $13,085 | 2024-12 |
| Ame Cemetery Corporation | 501(c)(13) | 2012 | $0 | $0 | 2025-12 |
| Cryptic Masons of California | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Ibew 551 Benevolent Fund Inc | 501(c)(3) | 2005 | $0 | $0 | 2024-12 |
| North Bay Bash | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Randals Ranchette Mutual Water Co | 501(c)(12) | 2002 | $0 | $0 | 2026-04 |
| Royal Arch Masons of California | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| United Ancient Order of Druids | 501(c)(8) | 1940 | $0 | $0 | 2026-04 |
| United Ancient Order of Druids | 501(c)(8) | 1940 | $0 | $0 | 2026-04 |
| United Ancient Order of Druids | 501(c)(8) | 1940 | $0 | $0 | 2026-04 |
| United Ancient Order of Druids | 501(c)(8) | 1940 | $0 | $0 | 2026-04 |
Other causes in Santa Rosa, CA
- Education 131
- Religion-related 100
- Arts, culture and humanities 85
- Human services 76
- Recreation and sports 69
- Community improvement and capacity building 56
- Philanthropy, voluntarism and grantmaking foundations 51
- Animal-related 38
- Environment 33
- Housing and shelter 28
- Youth development 28
- Health care 27
- Mental health and crisis intervention 24
- Public and societal benefit 18
- Diseases, disorders and medical disciplines 16
- International, foreign affairs and national security 16
- Crime and legal-related 14
- Employment 14
- Food, agriculture and nutrition 12
- Public safety, disaster preparedness and relief 11
- Civil rights, social action and advocacy 8
- Science and technology 7
- Social science 4
- Medical research 3
Every nonprofit in Santa Rosa, CA · Mutual and membership 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.