Silicon Valley is outside a populous region.
Silicon Valley is a nickname for the southern portion of the San Francisco Bay Area , in the northern part of the U.S. state of California .	San Francisco Bay Area	San Francisco Bay Area	California	California	northern part	Northern California	U.S. state	U.S. state	San Francisco	San Francisco
The San Francisco Bay Area -LRB- referred to locally as the Bay Area -RRB- is a populous region surrounding the San Francisco and San Pablo estuaries in Northern California .	California	California	San Francisco	San Francisco	San Pablo	San Pablo Bay	estuaries	estuary	Northern California	Northern California
