408 Area Code
San Jose, California
Area code 408 is located in San Jose, California. It covers San Jose, Santa Clara, and surrounding areas in the Pacific time zone (UTC-8). Administered by NANPA.
Where is area code 408?
Area code 408 is located in San Jose, California. It covers San Jose, Santa Clara, and surrounding areas in the Pacific time zone (UTC-8).
Area code 408 is overlaid by area code 669. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 408
Area code 408 primarily serves the San Jose area of California. The exact coverage includes San Jose, Santa Clara, and Sunnyvale, along with surrounding communities and suburbs.
Time Zone
Pacific Time — UTC-8
Area code 408 operates in the Pacific Time Zone. When calling 408 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 408
Area code 408 was introduced in 1984 as a geographic area code serving San Jose, California. As demand for phone numbers grew, overlay code 669 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.