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US area code · California

Area code 350

Where the 350 area code is, its overlay and how to dial a +1 350 number from anywhere.

CoversCaliforniaTime zonePacific (PT)TypeOverlay
Quick answer

The 350 area code is in California, United States (Pacific (PT)). To call from abroad: +1 350 555-0123. It is an overlay, so all 10 digits are dialled.

StateCalifornia
Time zonePacific (PT)
TypeOverlay
10-digit dialingRequired
In service since19-May-2022

The 350 area code is a geographic North American Numbering Plan (NANP) code covering California. It has been in service since 19-May-2022 and sits in the Pacific (PT) time zone.

Overlay 350 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.

350209

How to dial a 350 number

From abroad+1 350 555-0123
Within the US / Canada1 350 555-0123
Locally (same area)350 555-0123

Other California area codes

209213279310323341357369408415424442510530559562

Frequently asked questions

Where is the 350 area code?

The 350 area code is in California, United States (Pacific (PT)).

Is 350 an overlay area code?

Yes. 350 overlays the same region as 209, so callers dial all 10 digits.

Do I have to dial 10 digits for 350?

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

How do I call a 350 number from another country?

Dial your exit code (or +), then 1, then 350, then the number: +1 350 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 350 number does not pinpoint a street or ZIP code.

Missed a call from +1 350?

In the 30 days to September 24, 2026, 39 unwanted calls showing a 350 number were reported to the US Federal Trade Commission, 72% of them recorded messages or robocalls. That puts 350 at #391 of 670 area codes reported.

Other14
Reducing your debt (credit cards, mortgage, student loans)7
Calls pretending to be government, businesses, or family and friends6
Dropped call or no message5
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 350 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 +1 350 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 350:

Onvoy, LLC 20Onvoy Spectrum, LLC 17New Cingular Wireless PCS, LLC 12Multiple Ocn Listing 9Commio, LLC 7T-Mobile USA, Inc. 7

About 23.8% of the 101 prefixes in use belong to mobile carriers: a 350 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 350 — cities & rate centres