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US area code · California

Area code 310

Where the 310 area code is, its overlay and how to dial a +1 310 number from anywhere.

CoversLos Angeles, CaliforniaTime zonePacific (PT)TypeOverlay
Quick answer

The 310 area code is in Los Angeles, California, United States (Pacific (PT)). To call from abroad: +1 310 555-0123. It is an overlay, so all 10 digits are dialled.

StateCalifornia
Main areaLos Angeles
Time zonePacific (PT)
TypeOverlay
10-digit dialingRequired
In service since31-Aug-1990

The 310 area code is a geographic North American Numbering Plan (NANP) code covering Los Angeles, California. It has been in service since 31-Aug-1990 and sits in the Pacific (PT) time zone.

Overlay 310 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.

310213424

How to dial a 310 number

From abroad+1 310 555-0123
Within the US / Canada1 310 555-0123
Locally (same area)310 555-0123

Cities in the 310 area code

A 310 number is usually in one of these places in California — 1 county.

Beverly Hills Los AngelesCulver City Los AngelesGardena Los AngelesHawthorne Los AngelesInglewood Los AngelesLawndale Los AngelesLennoxLomita Los AngelesLynwood Los AngelesManhattan Beach Los AngelesRancho Palos Verdes Los AngelesRedondo Beach Los AngelesSanta Monica Los AngelesTorrance Los AngelesWest Carson

Other California area codes

209213279323341350357369408415424442510530559562

Frequently asked questions

Where is the 310 area code?

The 310 area code is in Los Angeles, California, United States (Pacific (PT)).

Is 310 an overlay area code?

Yes. 310 overlays the same region as 213, 424, so callers dial all 10 digits.

Do I have to dial 10 digits for 310?

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

How do I call a 310 number from another country?

Dial your exit code (or +), then 1, then 310, then the number: +1 310 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 310 number does not pinpoint a street or ZIP code.

Missed a call from +1 310?

In the 30 days to September 24, 2026, 371 unwanted calls showing a 310 number were reported to the US Federal Trade Commission, 54% of them recorded messages or robocalls. That puts 310 at #258 of 670 area codes reported.

Other148
Dropped call or no message90
Calls pretending to be government, businesses, or family and friends25
Reducing your debt (credit cards, mortgage, student loans)24
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 310 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 +1 310 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 310:

Pacific Bell 250Frontier California Inc. 137New Cingular Wireless PCS, LLC 68T-Mobile USA, Inc. 58Cellco Partnership Dba Verizon Wireless 56Mcimetro Access Transmission Services LLC 27

About 23.4% of the 800 prefixes in use belong to mobile carriers: a 310 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 310 — cities & rate centres