| | | Sutter County | CA | 06101 | | Yuba City, CA 49700 | Sacramento-Roseville, CA 472 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=SutterCounty+CA |
| | | Tehama County | CA | 06103 | | Red Bluff, CA 39780 | Redding-Red Bluff, CA 454 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=TehamaCounty+CA |
| | | Trinity County | CA | 06105 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=TrinityCounty+CA |
| | | Tulare County | CA | 06107 | | Visalia, CA 47300 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=TulareCounty+California |
| | | Tuolumne County | CA | 06109 | | Sonora, CA 43760 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=TuolumneCounty+CA |
| | | Ventura County | CA | 06111 | | Oxnard-Thousand
Oaks-Ventura, CA 37100 | Los Angeles-Long Beach,
CA 348 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=VenturaCounty+CA |
| | | Yolo County | CA | 06113 | | Sacramento-Roseville-Folsom,
CA 40900 | Sacramento-Roseville, CA 472 | Outlying | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=YoloCounty+CA |
| | | Yuba County | CA | 06115 | | Yuba City, CA 49700 | Sacramento-Roseville, CA 472 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=YubaCounty+CA |
