Castroville is an unincorporated town and census-designated place in Monterey County, California, United States. At the time of the 2020 census the population was 7,515, up from 6,481 in 2010. Castroville is known for its artichoke crop and for the annual Castroville Artichoke Festival, leading to its nickname as the "Artichoke Center of the World". The community's origins lie in Rancho Bolsa Nueva y Moro Cojo, a Mexican-era rancho granted to the Castro family of Californio rancheros.