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area code

Biggest city:

San Jose




Pacific (GMT -8)

Nearby area codes: 

Zip codes



Major Cities:

San Jose, Sunnyvale, Santa Clara, Milpitas, Palo Alto, Cupertino, Gilroy, Morgan Hill, Campbell, Saratoga, Los Gatos, Alum Rock

San Jose

Average Income:





Unemployment Rate:

The 669 area code is a key part of California's telecommunications landscape, serving the Silicon Valley region and playing a crucial role in connecting its communities. An Overlay in the Silicon Valley Area: Introduced in 2012 as an overlay to the existing 408 area code, the 669 area code covers the same geographic area, which includes cities like San Jose, Santa Clara, and Sunnyvale. This was a response to the increasing demand for new phone numbers in the Silicon Valley region, known for its high concentration of technology companies and rapid population growth. Supporting a Hub of Technology and Innovation: The region served by the 669/408 area code combination is at the heart of Silicon Valley, a global center for technology and innovation. Home to many of the world's largest tech companies and numerous startups, the area is also important for higher education, with institutions like San Jose State University. The 669 area code supports the high volume of communication required by the region's dynamic tech industry and diverse population. Adaptation to Technological and Demographic Changes: The implementation of the 669 area code as an overlay to 408 reflects the Silicon Valley area's adaptation to rapid technological advancements, urban expansion, and changing demographic needs. This strategy ensures a continuous supply of phone numbers for new residents and businesses, while maintaining existing numbers, indicating the region's ongoing development and capacity to evolve with changing telecommunications requirements. The 669 area code, along with the 408 area code, symbolizes Silicon Valley's status as a global technology hub, playing a critical role in connecting a region that is at the forefront of innovation and technological progress.
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