Alumni Chapters, Associations and Clubs
| Chapter | Organization Type | City | State/Prov. | Province | Website | Founding Date |
|---|---|---|---|---|---|---|
| Fresno Alumni | Alumni Chapter | Fresno | CA | California Central Valley | fresnosigs.com/ | May 18, 1949 |
| Los Angeles County Alumni | Alumni Chapter | Manhattan Beach | CA | Los Angeles Coastal | www.lasig.com | July 07, 1903 |
| Monterey Bay California Alumni | Alumni Chapter | Marina | CA | California Bay Area | ||
| Napa-Sonoma Alumni | Alumni Chapter | Sonoma | CA | California Central Valley | norcalwinesig.com/ | |
| Oakland East Bay Alumni | Alumni Chapter | Danville | CA | California Bay Area | oaklandeastbay.alumnisigmachi.org/ | |
| Orange County Alumni | Alumni Chapter | Newport Beach | CA | Southern California | ocsig.com | November 13, 1902 |
| Peninsula-San Mateo Alumni | Alumni Club | Campbell | CA | California Bay Area | ||
| Sacramento Alumni | Alumni Chapter | Granite Bay | CA | California Central Valley | sacvalleysigmachi.com | |
| San Diego Alumni | Alumni Chapter | San Diego | CA | Southern California | sandiegosigalumni.org/ | January 31, 1938 |
| San Francisco Alumni | Alumni Chapter | San Francisco | CA | California Bay Area | November 13, 1902 | |
| San Jose Alumni | Alumni Chapter | San Jose | CA | California Bay Area | June 16, 1908 | |
| Santa Barbara Alumni | Alumni Chapter | Santa Barbara | CA | Los Angeles Coastal | sbsig.com | |
| Santa Clara County Alumni Association | Alumni Association | Santa Clara | CA |
