669 Area Code: San Jose, California

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Area Code 669 Information

State: California
Primary City: San Jose
Primary Carrier: T-Mobile
Other Cities: Anaheim, Bakersfield, Chico

Neighborhood Demographics

Based on US Census data for San Jose

38.1 y/o

Median Age

Compared to the US median age of 38.7 y/o

$141.6K

Median Income

Compared to the US median income of $78.5K

$1.2M

Median Home Value

Compared to the US median home value of $303.4K

990.1K

San Jose Population

Compared to the US median city population of 171.9K

Active Prefixes in the 669 Area Code

About the 669 Area Code

San Jose's 669 area code overlays the long-established 408 in the South Bay, sharing geography with Silicon Valley's primary numbering. The Santa Clara Valley floor and the foothills that ring it sit inside the 669 footprint, taking in the city of San Jose itself along with the surrounding cluster of cities — Santa Clara, Sunnyvale, Cupertino, Milpitas, and the others that grew up around the orchards-to-electronics transition. The 669 designation has been filling with allocations as the region's number demand has continued to outpace what a single code can carry.

Other California cities — Anaheim, Bakersfield, Chico, Concord, and many more — turn up in the directory's records tied to 669 numbers. None of those are inside the 669 footprint. Their appearance reflects the standard California pattern of high number mobility, with porting, prior registration, and address linkage routinely surfacing cross-city records. The directory currently documents 59 distinct prefixes within 669 in detail, an early-stage subset that should be read as a lower bound on the prefix population carried by the code.

San Jose's income profile is its dominant demographic feature: median household income sits roughly twice the US figure, a reflection of the surrounding technology industry's wage premium. Home values run several multiples of the national median, the city's population places it among the largest in California, and median age is close to the US reading.