| List of Regional Centers | Areas Served |
| Alta California Regional Center | Alpine, Colusa, El Dorado, Nevada, Placer, Sacramento, Sierra, Sutter, Yolo and Yuba counties |
| Central Valley Regional Center | Fresno, Kings, Madera, Mariposa, Merced and Tulare counties |
| Eastern Los Angeles Regional Center | Eastern Los Angeles county including the communities of Alhambra and Whittier |
| Far Northern Regional Center | Butte, Glenn, Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama and Trinity counties |
| Frank D. Lanterman Regional Center | Central Los Angeles county including Burbank, Glendale and Pasadena |
| Golden Gate Regional Center | Marin, San Francisco and San Mateo counties |
| Harbor Regional Center | Southern Los Angeles county including Bellflower, Harbor, Long Beach and Torrance |
| Inland Regional Center | Riverside and San Bernadino counties |
| Kern Regional Center | Inyo, Kern and Mono counties |
| North Bay Regional Center | Napa, Solano and Sonoma counties |
| North Los Angeles County Regional Center | Northern Los Angeles county including San Fernando and Antelope Valleys |
| Redwood Coast Regional Center | Del Norte, Humboldt, Mendocino and Lake counties |
| Regional Center of the East Bay | Alameda and Contra Costa counties |
| Regional Center of Orange County | Orange county |
| San Andreas Regional Center | Monterey, San Benito, Santa Clara and Santa Cruz counties |
| San Diego Regional Center | Imperial and San Diego counties |
| San Gabriel/Pomona Regional Center | Eastern Los Angeles county including El Monte, Monrovia, Pomona and Glendora |
| South Central Los Angeles Regional Center | Southern Los Angeles county including the communities of Compton and Gardena |
| Tri-Counties Regional Center | San Luis Obispo, Santa Barbara and Ventura counties |
| Valley Mountain Regional Center | Amador, Calaveras, San Joaquin, Stanislaus and Tuolumne counties |
| Westside Regional Center | Western Los Angeles county including the communities of Culver City, Inglewood and Santa Monica |