Cupertino is a city in Santa Clara County, California in the United States, directly west of San Jose on the western edge of the Santa Clara Valley with portions extending into the foothills of the Santa Cruz Mountains. An affluent city, Cupertino is the 11th wealthiest city with a population over 50,000 in the United States. The population was 58,302 at the 2010 census. Forbes ranked it as one of the most educated small towns. It is known as the home of Apple Inc.'s corporate headquarters.