Northern Chapter Counties
Butte
Colusa
Del Norte
El Dorado
Glenn
Humboldt
Lake
Lassen
Marin
Mendocino
Modoc
Napa
Nevada
Placer
Plumas
Shasta
Sierra
Siskiyou
Solano
Sonoma
Sutter
Tehama
Trinity
Yolo
Yuba
Central Chapter Counties
Alameda
Alpine
Amador
Calaveras
Contra Costa
Fresno
Inyo
Kern
Kings
Madera
Mariposa
Merced
Mono
Monterey
Sacramento
San Benito
San Francisco
San Joaquin
San Luis Obispo
San Mateo
Santa Clara
Santa Cruz
Stanislaus
Tuolumne
Tulare
Southern Chapter Counties
Imperial
Los Angeles
Orange
Riverside
San Bernardino
San Diego
Santa Barbara
Ventura