Los Altos California Area Code
One area code covers Los Altos: 650.
The code covering Los Altos
| Area code | Primarily serves | In service |
|---|---|---|
| 650 | San Jose | 1997 |
Scope the codes matched to Los Altos. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot) and LocalCallingGuide NPA list (2026-07 NPA list). Updated . Overlay relationships come from the numbering-plan authority; the place match is computed.
Which part of town has which code
Los Altos has a single code, so there is nothing to divide — every local line carries 650.
ZIP codes for the same city
Postal geography is organised separately from telephone geography, so Los Altos’s 3 ZIP codes do not map onto the codes above. They are listed in full, with the county each falls in, on the postal side of the site.
Los Altos California ZIP codes →
Nearby places with different codes
These are the closest places to Los Altos whose area codes are not the same set. If you are near one of them, a local number may carry a code that is not on the list above.
| City | Distance | Their area codes |
|---|---|---|
| Sunnyvale California area codes | 4.0 mi | 408, 650, 669 |
| Cupertino California area codes | 4.4 mi | 408, 650, 669 |
| Santa Clara California area codes | 7.1 mi | 408, 669 |
| Saratoga California area codes | 7.9 mi | 408, 669 |
| Menlo Park California area codes | 8.2 mi | 341, 510, 650 |
| Campbell California area codes | 10 mi | 408, 669 |
| Newark California area codes | 10 mi | 341, 510 |
| Milpitas California area codes | 12 mi | 408, 669 |
Straight-line distance between place reference points, not driving distance.