Skip to content
Country Dialing CodesConnecting a more open world A clearer
more connected world.
US area code · California

Area code 279

Where the 279 area code is, its overlay and how to dial a +1 279 number from anywhere.

CoversCaliforniaTime zonePacific (PT)TypeOverlay
Quick answer

The 279 area code is in California, United States (Pacific (PT)). To call from abroad: +1 279 555-0123. It is an overlay, so all 10 digits are dialled.

StateCalifornia
Time zonePacific (PT)
TypeOverlay
10-digit dialingRequired
In service since09-Feb-2017

The 279 area code is a geographic North American Numbering Plan (NANP) code covering California. It has been in service since 09-Feb-2017 and sits in the Pacific (PT) time zone.

Overlay 279 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

279916

How to dial a 279 number

From abroad+1 279 555-0123
Within the US / Canada1 279 555-0123
Locally (same area)279 555-0123

Other California area codes

209213310323341350357369408415424442510530559562

Frequently asked questions

Where is the 279 area code?

The 279 area code is in California, United States (Pacific (PT)).

Is 279 an overlay area code?

Yes. 279 overlays the same region as 916, so callers dial all 10 digits.

Do I have to dial 10 digits for 279?

Yes — dial the area code plus the seven-digit number.

How do I call a 279 number from another country?

Dial your exit code (or +), then 1, then 279, then the number: +1 279 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 279 number does not pinpoint a street or ZIP code.

Missed a call from +1 279?

In the 30 days to September 24, 2026, 224 unwanted calls showing a 279 number were reported to the US Federal Trade Commission, 58% of them recorded messages or robocalls. That puts 279 at #322 of 670 area codes reported.

Other106
Reducing your debt (credit cards, mortgage, student loans)50
Calls pretending to be government, businesses, or family and friends28
Dropped call or no message18
Before you call back
  • If you do not know anyone in California, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 279 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 279 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 279:

Fractel, LLC 36Onvoy, LLC 36T-Mobile USA, Inc. 15New Cingular Wireless PCS, LLC 13Multiple Ocn Listing 9Bandwidth.Com CLEC, LLC 7

About 19.1% of the 162 prefixes in use belong to mobile carriers: a 279 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 279 — cities & rate centres