408 Area Code: San Jose CA — Location & Time Zone Guide
408 area code covers San Jose and Silicon Valley in Santa Clara County, CA. HP garage, the Traitorous Eight, and the hard disk drive.
The 408 area code covers San Jose and Silicon Valley in Santa Clara County, California. Created in 1959 as a split from 415, it's the code that dialed the HP garage, the Traitorous Eight's Fairchild Semiconductor, and the first hard disk drive.
Quick Facts
- State: California
- City: San Jose (pop. ~1 million)
- Area Code: 408 (overlay: 669)
- Time Zone: Pacific Time (PT)
- Metro Population: ~2 million
- Original Code: 408 (1959, split from 415)
- Overlay: 669 (2012)
- Dialing: 10-digit mandatory
Is a 408 Area Code Call a Scam?
No — 408 is a legitimate area code serving approximately 2 million people in Silicon Valley. However, California ranks among the top states for robocall complaints. Always verify unknown callers. Use our Spam Number Checker to check suspicious numbers.
How to Call San Jose Internationally
Dial exit code + 1 + 408 + 7-digit number. On mobile: +1-408-XXX-XXXX. Use Best Time to Call for Pacific Time info. Look up any code with our Area Code Lookup. Check our rates.
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