| | | Marin County | CA | 06041 | San Rafael, CA 42034 | San
Francisco-Oakland-Fremont,
CA 41860 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | recreation | https://maps.google.com/?q=MarinCounty+CA |
| | | San Francisco County | CA | 06075 | San Francisco-San
Mateo-Redwood City, CA 41884 | San
Francisco-Oakland-Fremont,
CA 41860 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SanFranciscoCounty+CA |
| | | San Mateo County | CA | 06081 | San Francisco-San
Mateo-Redwood City, CA 41884 | San
Francisco-Oakland-Fremont,
CA 41860 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SanMateoCounty+CA |
| | | San Benito County | CA | 06069 | | San Jose-Sunnyvale-Santa
Clara, CA 41940 | San Jose-San
Francisco-Oakland, CA 488 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=SanBenitoCounty+CA |
| | | Santa Clara County | CA | 06085 | | San Jose-Sunnyvale-Santa
Clara, CA 41940 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=SantaClaraCounty+CA |
| | | San Luis Obispo County | CA | 06079 | | San Luis Obispo-Paso
Robles, CA 42020 | | Central | metro county (urban) | recreation | https://maps.google.com/?q=SanLuisObispoCounty+CA |
| | | Santa Cruz County | CA | 06087 | | Santa Cruz-Watsonville,
CA 42100 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | recreation | https://maps.google.com/?q=SantaCruzCounty+CA |
| | | Santa Barbara County | CA | 06083 | | Santa Maria-Santa
Barbara, CA 42200 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SantaBarbaraCounty+CA |
| | | Sonoma County | CA | 06097 | | Santa Rosa-Petaluma, CA 42220 | | Central | metro county (urban) | recreation | https://maps.google.com/?q=SonomaCounty+CA |
| | | Tuolumne County | CA | 06109 | | Sonora, CA 43760 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=TuolumneCounty+CA |
