Area code 628 covers San Francisco and surrounding communities in California.
Updated 8 October 2026
Area code 628 is in California, shown here with San Francisco marked.
Now in San Francisco
Pacific Time · UTC−8, UTC−7 in summer
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Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real San Francisco office is likely to answer. It says nothing about who called you.
Source: North American Numbering Plan Administrator, retrieved 8 October 2026.
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Is area code 628 a scam?
No. Area code 628 is a legitimate area code serving San Francisco since 2015. Scammers spoof caller ID to display 628 numbers, which is why complaints exist against a code that is itself genuine.
Neighbour spoofing is the reason a local-looking number is not a guarantee. A caller anywhere in the world can display a 628 number, and the number they display may belong to a real business in San Francisco that has nothing to do with the call.
The callerAnywhere in the worldSets the caller ID their equipment sends.
What is displayed(628) 216-6467May belong to a real San Francisco business.
Your phoneLooks localA nearby code and prefix make you likelier to answer.
336Area code 628 had 336 different numbers reported for spam calls in the 30 days to 8 October 2026.
238thArea code 628 ranks 238th of 331 US geographic area codes by spam complaint volume.
59%Of the 364 complaints about area code 628 in the 30 days to 8 October 2026, 59% were reported as a recorded message or robocall.
22%The most reported subject on area code 628 is calls pretending to be government, businesses, or family and friends, appearing in 22% of its complaints in the 30 days to 8 October 2026.
Why am I getting text messages from area code 628?
Texts from 628 numbers follow the same pattern as calls — mostly local businesses and services. Treat any text asking for payment or credentials as suspect regardless of the code.
The common patterns are a wrong-number opener that turns into conversation, an unsolicited job offer, and a crypto or investment tip. Do not reply, do not follow the link, and forward the message to 7726 (SPAM) to report it to your carrier.
Pattern 1Wrong-number openerTurns into conversation.
Pattern 2Unsolicited job offerDo not reply, do not follow the link.
Pattern 3Crypto or investment tipTreat any payment ask as suspect.
Report it7726Forward the message. It spells SPAM on a keypad.
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Area codes that overlay 628
Area code 628 shares its geographic footprint with one other code: 415. Overlays are laid over an existing area rather than splitting it, so all local calls require the full ten-digit number.
Area code 628 went into service in 2015 as an overlay on 415, covering San Francisco and Marin County. The underlying economy needs little introduction. San Francisco is a global center for software and finance, home to Salesforce, whose tower dominates the skyline, along with Uber, OpenAI, Anthropic, and a rotating cast of startups working out of SoMa and Mission Bay offices. Wells Fargo and Visa trace their roots here, and the University of California, San Francisco runs one of the country's leading medical research campuses at Mission Bay. The AI hiring wave of the past few years has pulled significant investment back into the city's office market.
Who lives in the 628 region
San Francisco counted 830,235 residents in 2024, with a median household income of $140,970 and a median property value of $1.39 million, per DataUSA. About 33.9% of residents were born outside the United States, and the Asian-American population, at roughly 290,000, is nearly as large as the non-Hispanic white population. Cantonese, Mandarin, and Spanish are all widely spoken. Notably, DataUSA records that most residents worked from home in 2024, a commuting pattern that still shapes when people answer their phones.
What a 628 number signals to a caller
The 415 code carries decades of prestige, so callers describe 628 as the number newcomers get, though the association is weakening as inventory turns over. Ten-digit dialing applies. Business in San Francisco, California is informal in tone and rigorous underneath, and out-of-area callers should expect scheduling over spontaneity: unannounced calls often land in voicemail, and email or text first is generally expected.
Area code 628 serves San Francisco and surrounding communities in California. It is in the Pacific Time zone.
What state is area code 628 in?
Area code 628 is in California. It is not in Fort Worth or Newark — those are area codes 682 and 862.
Is area code 628 toll free?
No. Area code 628 is a geographic area code serving San Francisco, California. The toll-free codes are 800, 833, 844, 855, 866, 877, 888, and a call to a 628 number is charged at your normal rate.
Why am I getting calls from 628?
Calls displaying a 628 number come from businesses and individuals in the San Francisco area, and from anywhere at all when caller ID is spoofed to look local. 336 628 numbers were reported to the FTC in the 30 days to 8 October 2026.
How do I block calls from area code 628?
Both iOS and Android can silence calls from unknown numbers, and every major US carrier offers free call-blocking. Blocking the whole of area code 628 is rarely worth it, because spoofed numbers change constantly and you would lose legitimate calls from San Francisco.