Locations for Area Code - 650

Area code 650 serves the San Francisco Peninsula, including cities like Palo Alto, Mountain View, and San Mateo. Introduced in 1997 as a split from 415, it covers the heart of Silicon Valley, home to major tech companies, venture capital firms, and Stanford University. The region is known for innovation, affluence, and proximity to the Bay Area’s economic core. Ten-digit dialing is required. 650 is a powerful symbol of technological progress and entrepreneurial ambition.