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Area code 408

Area code 408 San Jose, California

Area code 408 is in California, with numbers assigned in San Jose, Sunnyvale, Campbell and 8 more places. It’s 9:11 PM there now.

State
California41 area codes in California
Time zone
Pacific9:11 PM there now
Exchanges
78711 places
Overlay
669Same area, 10-digit dialing
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Where area code 408 is

Numbers in 408 are assigned to 11 places in 4 counties: Santa Clara County, Monterey County, San Benito County and San Bernardino County.

San Jose holds most of them: 69% of the exchanges.

  • San Jose544
  • Sunnyvale96
  • Campbell43
  • Los Gatos24
  • Morgan Hill19
  • Gilroy16
  • San Martin15
  • Saratoga15
  • Salinas12
  • Hollister1
  • San Antonio Heights1

Phone companies in 408

787 blocks of numbers in 408 are held by 24 phone companies. The most belong to AT&T (331), AT&T Mobility (70) and Verizon Wireless (65).

A mix: about 26% wireless, 45% local phone and cable and 29% other carriers, including internet phone services.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

408 went into service in 1959, added to the area of 415.

669 (since 2012) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

13 new exchanges were assigned since 2021, the latest in May 2026.

Calling 408

It’s 9:11 PM Pacific time in 408 right now.

From elsewhere in the U.S., dial 1, 408 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

California has 41 area codes: 209, 213, 279, 310, 323, 341, 350, 357, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 738, 747, 760, 805, 818, 820, 831, 837, 840, 858, 909, 916, 925, 949 and 951.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 408 area code

Map of the 408 area code around San Jose, Sunnyvale and Campbell, California.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 408

Where is area code 408?

In California, covering San Jose, Sunnyvale and Campbell and other places across 4 counties.

What time zone is 408 in?

Pacific time. It was 9:11 PM there when this page loaded.

Is 408 an overlay?

Yes. 669 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 408 numbers?

24 companies hold blocks; the most belong to AT&T, AT&T Mobility and Verizon Wireless. About 26% of blocks are wireless.

Is 408 running out of numbers?

Not on record. 13 new exchanges have been assigned since 2021.