| County | Cities / Towns |
| Los Angeles County | Los Angeles, Long Beach, Glendale, Santa Monica, Pasadena, Torrance, Lancaster, Palmdale |
| San Diego County | San Diego, Chula Vista, Oceanside, Escondido, Carlsbad, El Cajon |
| Orange County | Anaheim, Santa Ana, Irvine, Huntington Beach, Newport Beach, Fullerton |
| San Bernardino County | San Bernardino, Fontana, Ontario, Rancho Cucamonga, Victorville |
| Riverside County | Riverside, Moreno Valley, Corona, Palm Springs, Temecula |
| San Francisco County | San Francisco (only city–county consolidated) |
| Alameda County | Oakland, Berkeley, Fremont, Hayward, Pleasanton, Livermore |
| Sacramento County | Sacramento, Elk Grove, Folsom, Rancho Cordova |
| Santa Clara County | San Jose, Sunnyvale, Santa Clara, Palo Alto, Mountain View |
| Contra Costa County | Concord, Richmond, Antioch, Walnut Creek, Pittsburg |