REGION MAP
Regions are identified by counties as follows:
Region 1 Counties:
- Alpine County
- Amador County
- Butte County
- Calaveras County
- Colusa County
- El Dorado County
- Glenn County
- Lassen County
- Modoc County
- Nevada County
- Placer County
- Plumas County
- Sacramento County
- San Joaquin County
- Shasta County
- Sierra County
- Siskiyou County
- Sutter County
- Tehama County
- Yolo County
- Yuba County
Region 2 Counties:
- Alameda County
- Contra Costa County
- Del Norte County
- Humboldt County
- Lake County
- Marin County
- Mendocino County
- Monterey County
- Napa County
- San Benito County
- San Francisco County
- San Mateo County
- Santa Clara County
- Santa Cruz County
- Solano County
- Sonoma County
- Trinity County
Region 3 Counties:
- Fresno County
- Inyo County
- Kern County
- Kings County
- Madera County
- Mariposa County
- Merced County
- Mono County
- Stanislaus County
- Tulare County
- Tuolumne County
Region 4 Counties:
- Los Angeles County
- Ventura County
- Santa Barbara County
- San Luis Obispo County
Region 5 Counties:
- San Bernardino County
- Orange County
- Riverside County
Region 6 Counties:
- San Diego County
- Imperial County