628 Area Code
California, USA
Local time now · Pacific Time
12:42 AM
Area code 628 is in California, USA, serving San Francisco and Tamalpais-Homestead Valley. It uses Pacific Time — the time there now is 12:42 AM. 415 is an overlay for the same area, so local calls need 10-digit dialing. In service since 2015.
| Area code | 628 |
|---|---|
| Location | California, USA |
| Major cities | San Francisco, Tamalpais-Homestead Valley |
| Time zone | Pacific Time |
| Overlay codes | 415 |
| In service since | 2015 |
Other area codes in California
209213279310323341350357369408424442510530559562619626650657661669707714738747760805818820831837840858909916925949951
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Frequently asked questions
Where is area code 628?
California, USA — including San Francisco and Tamalpais-Homestead Valley.
What time zone is area code 628?
Pacific Time.
How do I call a 628 number from abroad?
Dial your international access code, then 1 (the country code), then 628 and the 7-digit number — for example +1 628 555 0100. From the UK or India dial 00 1 628 …; from Bangladesh 00 1 628 … .
Is a call from 628 a scam?
Not by itself — 628 is an ordinary geographic area code in California. Numbers can be spoofed, so be careful with unexpected calls asking for money or personal details.
Sources: North American Numbering Plan Administrator (NANPA) NPA database (10/25/2026); major cities from Wikidata (CC0). An area code shows where a number was first assigned — with number portability and mobile phones, the caller may be anywhere.