628 area code
San Francisco area, Pacific Time.Area code 628 covers San Francisco, San Rafael, Belvedere and 9 more places in California, on Pacific Time. 415 covers the same area.
Right now in San Francisco
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 628 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 628 has 12. Each one's share is how many 628 numbers start there. Its biggest metro area is San Francisco-Oakland-Fremont, CA.
- San Francisco60%
- San Rafael8%
- Belvedere5%
- Novato4%
- Sausalito4%
- Mill Valley4%
- Corte Madera4%
- Ignacio3%
- Nicasio3%
- Point Reyes2%
- Inverness2%
Also: Stinson Beach-Bolinas
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 628 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 628 number to them, since you can't tell a work line from a personal cell.
What applies to 628Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
628 and 415
628 went into service on March 21, 2015. 628 and 415 cover the same area, so new numbers can get either code and neighbors can have different area codes. 628 holds 20% of the area's exchanges; 415 holds the most. Local calls take all 10 digits.
- 1947415 overlay
- 2015628 starts
Source: NANPA area code database
Other California area codes
All California area codes- Stockton209350
- Los Angeles213323738
- Sacramento279916
- Compton310424
- Oakland341510
- Fresno357559
- Santa Rosa369707
- San Jose408669
- Oceanside442760
- Chico530837
- Long Beach562
- San Diego619858
- Alhambra626
- Palo Alto650
- Anaheim657714
- Bakersfield661
- Van Nuys747818
- Santa Barbara805820
- Salinas831
- Ontario840909
- Walnut Creek925
- Irvine949
- Riverside951
Calling a list of 628 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
628 area code FAQ
What area code is 628?
628 is a California area code for San Francisco, San Rafael, Belvedere, Novato and 8 more places.
What time zone is the 628 area code in?
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer).
Is 415 the same as 628?
Same area, different code. 628 and 415 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 628 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 628 area code start?
On March 21, 2015.
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