628 area code: location, overlays and numbers
In San Francisco, California, US telephone area code 628 has been in service since 2015 and shares an overlay with 415.
- Location
- San Francisco, California
- Service start date
- 2015
- Time zone used
- Time here is Pacific.
- Overlay
- 415
- Calls within the area
- Full 1 + 10-digit dialling
- List of rate centres
- 14
- Exhaust projection
- 2072
- Code for the country
- +1 (United States)
Source: NANPA public reports, the area code report and the rate-centre report, dated 11/01/2026. The exhaust year comes from the NANPA projections release 2026-1 (April 2026). This site is not an official NANPA site.
Get your own 628 number
There are two ways to get a 628 number. With its plan, a provider assigns a new number, picked at sign-up from the set of numbers it holds in the code. Sellers post numbers they already hold, often with a pattern, at a one-time price. You then move that number to a provider.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers listing local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. This never changes the ranking, which follows first-year cost. How our earnings work
Places in the 628 area code
For 628, NANPA lists 14 rate centres. Every one is a local calling area where numbers get assigned:
Corte Madera, Belvedere, Ignacio, Nicasio, Novato, Point Reyes, Sausalito, San Rafael, Inverness, Mill Valley, San Francisco:juniper Da, Stinson Beach-bolinas, San Francisco:central Da, San Francisco:montrose-evergreen Da.
Area codes that are related
The same area and number pool also includes 415. You can request a number here from any of these codes, but name the code you prefer.
Other California area codes: 357, 213, 916, 714, 805, 209, 408, 707, 619, 818, 510, 310, 909, 562, 760, 626, 650, 530, 925, 949, 323, 831, 559, 661, 858, 951, 424, 657, 747, 442, 669, 279, 820, 341, 840, 350, 369, 738 and 837.
Read the San Francisco area codes guide.
628 area code questions
Which area does 628 serve?
Calls using 628 ring in San Francisco, California, around San Francisco-Oakland-Fremont, CA.
Which country code does a 628 number use?
+1. Because 628 belongs to the North American Numbering Plan, callers abroad dial +1 628 followed by the 7-digit number.
What time is it in the 628 area code?
The time in 628 is Pacific.
Who calls using a 628 number?
Homes, mobiles and local businesses may use this code, and callers can also use it to fake a local number. What a 628 number on your screen shows is where that number was assigned, not the identity of the caller.