7 CFR 983.11 - Districts.
(a) Districts shall consist of the following:
(1) District 1 consists of Tulare, Kern, San Bernardino, San Luis Obispo, Santa Barbara, Ventura, Los Angeles, Orange, Riverside, San Diego, and Imperial Counties of California.
(2) District 2 consists of Kings, Fresno, Madera, and Merced Counties of California.
(3) District 3 consists of all counties in California where pistachios are produced that are not included in Districts 1 and 2.
(4) District 4 consists of the States of Arizona and New Mexico.