California ranks 9th compared to the other potato producing states with 3% of the total US production. Potatoes are grown year round in California due to the state's unique geography and climate.
Potato growing areas in California
There are 4 major potato growing regions in California:
Kern and Los Angeles Counties (fresh, chipping)
Klamath/Tulelake Basin in Siskiyou and Modoc Counties (fresh, processing, seed)
The Delta Basin in San Joaquin County (emphasis on seed potatoes)
The desert and mountain valleys of Imperial, Riverside and San Diego Counties (fresh)
California is also the second largest grower of sweet potatoes in the United States