628 Area Code
San Francisco (overlay), California
Area code 628 is located in San Francisco (overlay), California. It covers San Francisco, Daly City, and surrounding areas in the Pacific time zone (UTC-8). Administered by NANPA.
Where is area code 628?
Area code 628 is located in San Francisco (overlay), California. It covers San Francisco, Daly City, and surrounding areas in the Pacific time zone (UTC-8).
Cities Covered by Area Code 628
Area code 628 primarily serves the San Francisco (overlay) area of California. The exact coverage includes San Francisco, Daly City, and South San Francisco, along with surrounding communities and suburbs.
Time Zone
Pacific Time — UTC-8
Area code 628 operates in the Pacific Time Zone. When calling 628 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 628
Area code 628 was introduced in 2015 as a geographic area code serving San Francisco (overlay), California. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.