Half Moon Bay California Area Code
One area code covers Half Moon Bay: 650.
The code covering Half Moon Bay
| Area code | Primarily serves | In service |
|---|---|---|
| 650 | San Jose | 1997 |
Scope the codes matched to Half Moon Bay. 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
Half Moon Bay 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 Half Moon Bay’s 1 ZIP code 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.
Half Moon Bay California ZIP codes →
Nearby places with different codes
These are the closest places to Half Moon Bay 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 |
|---|---|---|
| Burlingame California area codes | 9.5 mi | 415, 628, 650 |
| San Mateo California area codes | 9.6 mi | 415, 628, 650 |
| San Carlos California area codes | 9.7 mi | 415, 628, 650 |
| San Bruno California area codes | 11 mi | 415, 628, 650 |
| South San Francisco California area codes | 13 mi | 415, 628, 650 |
| Brisbane California area codes | 15 mi | 415, 628, 650 |
| Menlo Park California area codes | 16 mi | 341, 510, 650 |
| Daly City California area codes | 16 mi | 415, 628, 650 |
Straight-line distance between place reference points, not driving distance.