Data / Nonprofits / California / SN Luis Obisp / Mutual and membership benefit
Mutual and membership benefit nonprofits in SN Luis Obisp, CA: 10 registered with the IRS
10 mutual and membership benefit nonprofits are registered with the IRS in SN Luis Obisp, CA, 1 of them 501(c)(3) charities; the 4 that report revenue took in $704,149. The largest by revenue: Anza Vineyard Estates Mutual Water Company ($271,878), Sigma Pi Fraternity International Inc ($212,918), Alpha Gamma Rho Fraternity ($136,208).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Anza Vineyard Estates Mutual Water Company | 501(c)(12) | 2020 | $271,878 | $128,007 | 2024-12 |
| Sigma Pi Fraternity International Inc | 501(c)(7) | 1940 | $212,918 | $73,306 | 2024-06 |
| Alpha Gamma Rho Fraternity | 501(c)(7) | 2023 | $136,208 | $9,235 | 2025-06 |
| Callender Grove Mutual Water Company | 501(c)(12) | 2011 | $83,145 | $38,122 | 2026-05 |
| Knights Templar of the United States of America | 501(c)(10) | 1964 | $0 | $0 | 2025-12 |
| Knights of Columbus | 501(c)(8) | 1940 | |||
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Nace Central Coast | 501(c)(6) | 2026 | |||
| San Luis Obispo Guild Hall | 501(c)(8) | 2016 | $0 | $0 | 2023-12 |
| Sustained Excellence Alliance Corp | 501(c)(3) | 2001 | $0 | $19,397 | 2024-12 |
Other causes in SN Luis Obisp, CA
- Recreation and sports 40
- Education 38
- Arts, culture and humanities 31
- Human services 30
- Philanthropy, voluntarism and grantmaking foundations 28
- Religion-related 27
- Community improvement and capacity building 21
- Environment 17
- Housing and shelter 16
- Youth development 11
- Public and societal benefit 10
- Public safety, disaster preparedness and relief 7
- Food, agriculture and nutrition 7
- Animal-related 6
- International, foreign affairs and national security 6
- Employment 6
- Civil rights, social action and advocacy 5
- Health care 5
- Crime and legal-related 5
- Mental health and crisis intervention 4
- Diseases, disorders and medical disciplines 3
Every nonprofit in SN Luis Obisp, 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.