628 Area Code
The 628 area code serves Mill Valley, Nicasio, Novato, Point Reyes, San Francisco in United States. Learn the cities and counties covered, the time zone, dialing format, and how to get a local 628 business number.
Cities & regions in the 628 area code (7)
Frequently asked questions
What area code is 628?+
628 is a North American Numbering Plan (NANP) area code in United States, primarily covering Mill Valley, Nicasio, Novato, Point Reyes, San Francisco.
Where is the 628 area code located?+
The 628 area code is located in United States. It operates on Pacific Time (PT).
How do you dial the 628 area code from abroad?+
Dial your country's international exit code, then +1 628 followed by the 7-digit local number. From inside the US/Canada, dial 1 628 XXX-XXXX.
Can I get a 628 phone number for my business?+
Yes. AstraQom provisions local 628 DID numbers for SIP trunking, hosted PBX, contact centers and toll-free porting — usually within minutes, with no long-term contract.
Get a local 628 number for your business
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AstraQom is an independent global telecom carrier serving 117 countries. We provision local 628 DID numbers, SIP trunks, hosted PBX, contact-center routing and SD-WAN — all on Tier-1 carrier infrastructure with no grey termination and 24/7 multilingual support.