Chino is a city in the western end of San Bernardino County, California, United States, with Los Angeles County to its west and Orange County to its south in the Southern California region. Chino is adjacent to the greater Pomona Valley area. Chino's surroundings have long been a center of agriculture and dairy farming, providing milk products in Southern California and much of the southwestern United States. Chino's agricultural history dates back to the Spanish land grant forming Rancho Santa Ana del Chino. Chino, California - Wikipedia
The area specialized in orchard, row crops and dairy. Chino's place as a township began in 1887 when Richard Gird began the sale of portions of his Chino Ranch land for public development. Chino's population grew tenfold over the next decades and was incorporated in 1910. The City of Los Angeles saw an influx of people during the 1920s that pushed its dairy industry out of the city and into Chino. The dairy and agricultural industries continued to thrive in Chino into the 1980s.
Beginning in the 1970s, Chino saw the rise of business and manufacturing industries and took on a suburban identity whilst preserving its agricultural industries. Land southwest of incorporated Chino was primarily used for grazing and lay rural until the 1970s with the rise of suburban housing developments. This area incorporated as the city of Chino Hills in 1991 and has continuously been filled with housing developments that maintain the city's affluent suburban identity.