Geographic Overview of San Jose, California

San Jose is the largest city in Northern California by both population and area, covering approximately 179.97 square miles (466.1 km²). It is located in the center of the Santa Clara Valley on the southern shore of San Francisco Bay. The city is part of the expansive San Francisco Bay Area, which encompasses nine counties, including Santa Clara County where San Jose is situated. This central location makes San Jose a strategic hub for businesses looking to tap into the broader Bay Area market.

San Jose is primarily served by two area codes: 408 and 669. The 408 area code has been in use since 1959 and covers a significant portion of the Santa Clara Valley, including San Jose. Due to population growth and the proliferation of telecommunication devices, the 669 area code was introduced in 2012 as an overlay to ensure a continuing supply of phone numbers.