Palo Alto California Area Code
One area code covers Palo Alto: 650.
The code covering Palo Alto
| Area code | Primarily serves | In service |
|---|---|---|
| 650 | San Jose | 1997 |
Scope the codes matched to Palo Alto. 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
Palo Alto 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 Palo Alto’s 6 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.
Palo Alto California ZIP codes →
Nearby places with different codes
These are the closest places to Palo Alto 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 |
|---|---|---|
| Menlo Park California area codes | 5.8 mi | 341, 510, 650 |
| Sunnyvale California area codes | 6.5 mi | 408, 650, 669 |
| Cupertino California area codes | 7.6 mi | 408, 650, 669 |
| Newark California area codes | 9.6 mi | 341, 510 |
| San Carlos California area codes | 9.8 mi | 415, 628, 650 |
| Santa Clara California area codes | 9.9 mi | 408, 669 |
| Saratoga California area codes | 11 mi | 408, 669 |
| Fremont California area codes | 13 mi | 341, 510, 925 |
Straight-line distance between place reference points, not driving distance.