Area code 628
Area code 628 serves San Francisco and nearby parts of California, including San Rafael, Novato and Mill Valley. It is on Pacific Time, which observes daylight saving time. 415 is an overlay for the same area.
Area code 628 at a glance
| State | California (CA) |
| Main city | San Francisco |
| Time zone | Pacific Time |
| UTC offset | UTC−8 in winter, UTC−7 in summer |
| Daylight saving time | Yes |
| Overlay codes | 415 |
Cities in 628
- San Francisco
- San Rafael
- Novato
- Mill Valley
An area code shows where a number was first assigned. Mobile numbers keep their area code when people move, so the person you’re calling may be somewhere else.
When you can call a 628 number
Federal telemarketing rules under the TCPA allow sales calls between 8 AM and 9 PM in the called person’s local time. Here is that window for a 628 number, shown in your own time zone.
General information, not legal advice. Some states add rules for Sundays, holidays or the number of calls. See our calling hours guide.
| If you’re on | You can call 628 between |
|---|---|
| Eastern | 11:00 AM to 12:00 AM |
| Central | 10:00 AM to 11:00 PM |
| Mountain | 9:00 AM to 10:00 PM |
| Arizona | 8:00 AM to 9:00 PM |
| Pacific | 8:00 AM to 9:00 PM |
See the time in 628 without leaving your CRM
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Other area codes in California
Questions about 628
What time zone is area code 628?
Area code 628 is on Pacific Time. It observes daylight saving time.
Where is area code 628?
Area code 628 is in California. Its main city is San Francisco, and it also covers San Rafael, Novato and Mill Valley.
What are the legal hours to call a 628 number?
Under the federal TCPA, sales calls are allowed from 8 AM to 9 PM in the called person’s local time. Personal and informational calls are not limited by these hours.
What area codes overlay 628?
415 covers the same area as 628, so numbers in the same town can have either code.