| | | 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 |
| | | Merced County | CA | 06047 | | Merced, CA 32900 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MercedCounty+California |
| | | Monterey County | CA | 06053 | | Salinas, CA 41500 | | Central | metro county (urban) | recreation | https://maps.google.com/?q=MontereyCounty+CA |
| | | Napa County | CA | 06055 | | Napa, CA 34900 | San Jose-San
Francisco-Oakland, CA 488 | Central | metro county (urban) | recreation | https://maps.google.com/?q=NapaCounty+CA |
| | | Orange County | CA | 06059 | Anaheim-Santa Ana-Irvine,
CA 11244 | Los Angeles-Long
Beach-Anaheim, CA 31080 | Los Angeles-Long Beach,
CA 348 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=OrangeCounty+CA |
| | | Placer County | CA | 06061 | | Sacramento-Roseville-Folsom,
CA 40900 | Sacramento-Roseville, CA 472 | Central | metro county (urban) | recreation | https://maps.google.com/?q=PlacerCounty+CA |
| | | Riverside County | CA | 06065 | | Riverside-San
Bernardino-Ontario, CA 40140 | Los Angeles-Long Beach,
CA 348 | Central | metro county (urban) | recreation | https://maps.google.com/?q=RiversideCounty+CA |
| | | Sacramento County | CA | 06067 | | Sacramento-Roseville-Folsom,
CA 40900 | Sacramento-Roseville, CA 472 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=SacramentoCounty+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 |
| | | San Bernardino County | CA | 06071 | | Riverside-San
Bernardino-Ontario, CA 40140 | Los Angeles-Long Beach,
CA 348 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SanBernardinoCounty+CA |
