| | | Imperial County | CA | 06025 | | El Centro, CA 20940 | | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=ImperialCounty+CA |
| | | Inyo County | CA | 06027 | | Bishop, CA 13860 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=InyoCounty+CA |
| | | Kern County | CA | 06029 | | Bakersfield-Delano, CA 12540 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=KernCounty+CA |
| | | Kings County | CA | 06031 | | Hanford-Corcoran, CA 25260 | Fresno-Hanford-Corcoran,
CA 260 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=KingsCounty+CA |
| | | Lake County | CA | 06033 | | Clearlake, CA 17340 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=LakeCounty+CA |
| | | Lassen County | CA | 06035 | | Susanville, CA 45000 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LassenCounty+CA |
| | | Madera County | CA | 06039 | | Fresno, CA 23420 | Fresno-Hanford-Corcoran,
CA 260 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=MaderaCounty+California |
| | | Mariposa County | CA | 06043 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=MariposaCounty+CA |
| | | Mendocino County | CA | 06045 | | Ukiah, CA 46380 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=MendocinoCounty+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 |
