Cities in area code 408
408 numbers are anchored to 13 rate centers across California. Each row shows how many active prefixes the locality holds — a direct measure of its numbering footprint.
San Jose:west Da, San Jose:north Da, Sunnyvale, San Jose:south Da, Campbell, Los Gatos, Morgan Hill and Gilroy hold the largest prefix inventories; and 4 smaller communities down to single-prefix localities. Each locality below links to its rate-center page with the full prefix list.
Metropolitan coverage: 12 rate centers belong to FCC top-100 metro areas.
Overlap note: 13 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Pacific.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| San Jose:west Da | 321 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| San Jose:north Da | 139 | San Francisco-Oakland-Fremont, CA | 408, 669 |
| Sunnyvale | 96 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| San Jose:south Da | 83 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Campbell | 43 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Los Gatos | 24 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Morgan Hill | 19 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Gilroy | 16 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| San Martin | 15 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Saratoga | 15 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
| Salinas | 12 | — | 408, 831 |
| Hollister | 1 | San Jose-Sunnyvale-Santa Clara, CA | 408, 831 |
| San Antonio | 1 | San Jose-Sunnyvale-Santa Clara, CA | 408, 669 |
FAQ
What is the biggest city in area code 408?
San Jose:west Da holds the most active prefixes (321), making it the code's largest numbering locality.
How many places does 408 cover?
13 rate centers in California hold active 408 prefixes, from San Jose:west Da down to communities with a single prefix.
Does a 408 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.