Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — AREA-CODE/415

415 area code

Area code 415 is in California. It covers San Francisco, San Rafael, Novato and 32 other places: 89 ZIP codes in San Francisco, Marin and San Mateo counties. Local time there is , Pacific Time. In service since 1947; 628 (2015) overlays it, so a number from there can have either code.

Time zone
Pacific
Largest city
San Francisco
Overlays
628
In service since
1947
Rate centres
14
Prefixes assigned
785 (7,850,000 numbers)

Who calls from a 415 number

NANPA records the carrier each block of 415 numbers is assigned to. Of the 7.8 million 415 numbers assigned, 37% are with local phone companies (AT&T); 32% with cable, internet-calling, business and other carriers (Onvoy and Bandwidth); 28% with mobile carriers (T-Mobile, AT&T Mobility and Verizon Wireless); 3% with paging companies.

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 415 numbers
CarrierKindShare
AT&TLandline36%
T-MobileMobile10%
AT&T MobilityMobile10%
Verizon WirelessMobile7%
OnvoyCable, VoIP, other7%
BandwidthCable, VoIP, other7%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 415

The 10 places with a telephone rate centre of their own using 415, largest first. Each links to its ZIP codes.

Places in area code 415
PlaceZIP codesPopulation
San Francisco, CA 51 830,235
San Rafael, CA 5 60,433
Novato, CA 5 52,546
Mill Valley, CA 2 14,012
Corte Madera, CA 2 10,077
Sausalito, CA 2 7,141
Belvedere, CA — 2,345
Inverness, CA 1 1,346
Point Reyes Station, CA 1 517
Nicasio, CA 1 91

Nearby places using 415

These places have no rate centre of their own in NANPA's records; the nearest one uses 415. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 415

89 ZIP codes in 24 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 415 numbers are issued

NANPA's rate centres with the most 415 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 415
Rate centrePlacePrefixes
SNFC CNTRL San Francisco 483
SAN RAFAEL San Rafael 62
SNFC MT-EV — 61
SNFC JUNPR — 56
NOVATO Novato 21
SAUSALITO Sausalito 18

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 415

Where is area code 415?

Area code 415 is in California. It covers San Francisco, San Rafael, Novato and 32 other places: 89 ZIP codes in San Francisco, Marin and San Mateo counties.

What ZIP codes are in area code 415?

89 ZIP codes, by the town each is mailed to: San Francisco (51, 94102 to 94188), San Rafael (5, 94901 to 94915), Novato (5, 94945 to 94998), Mill Valley (2, 94941 to 94942) and 20 more towns. The full list is on this page.

What time zone is area code 415 in?

Pacific time.

Is a 415 number a mobile or a landline?

It can be either. 28% of 415 numbers are assigned to mobile carriers and 37% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 415?

628. They cover the same area as 415, so a new number there can be given any of them.

Does a 415 number mean the caller is in California?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 415 call can come from anywhere.

Other area codes in California

All 41 California area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 415.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/415

Underlying data is public domain or openly licensed — sources, vintages and licences.