Silicon Valley is a county.
The `` valley '' in its name refers to the Santa Clara Valley in Santa Clara County , which includes the city of San Jose and surrounding cities and towns , where the region has been traditionally centered .	San Jose	San Jose, California	Santa Clara	Santa Clara, California	Santa Clara Valley	Santa Clara Valley	Santa Clara County	Santa Clara County
Most of the Santa Clara Valley is in Santa Clara County , including its county seat , San Jose .	Santa Clara County	Santa Clara County, California	San Jose	San Jose, California
