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310 Area Code

Area code 310 serves Torrance, Inglewood, Carson, Compton, Santa Monica and nearby communities in California. It has been in service since November 2, 1991, when it was split from 213.

StateCalifornia
Time zonePacific
Local time now…
Prefixes in use787
Overlay with424
Projected to run out2043
TorranceInglewoodCarsonComptonSanta MonicaHawthorneRedondo BeachLynwoodFlorence-GrahamGardenaRancho Palos VerdesCulver CityWestmontWest HollywoodManhattan BeachBeverly HillsLawndaleWest Rancho DominguezWest CarsonWillowbrookLennoxLomitaHermosa BeachEl SegundoWalnut ParkEast Rancho DominguezPalos Verdes EstatesView Park-Windsor HillsDel AireMalibuWest AthensMarina del ReyTopangaAlondra ParkRolling Hills EstatesLadera HeightsTorranceInglewoodSanta Monica
Cities and towns served by area code 310

Who issues 310 numbers

Mobile 24%VoIP and cable 15%Landline 61%

Share of the 787 prefixes (the three digits after 310) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
AT&T (Pacific Bell)256
Frontier137
AT&T Mobility68
T-Mobile58
Verizon Wireless56
Verizon Business (MCImetro)46
Lumen (Level 3)31
Spok24

Cities and towns in area code 310

CityPopulationOther area codes
Torrance138,391424
Inglewood101,662424
Carson90,808424, 562
Compton90,500424, 562
Santa Monica90,082424
Hawthorne82,741424
Redondo Beach67,281424
Lynwood63,512424, 562
Florence-Graham61,723424, 562
Gardena58,460424
Rancho Palos Verdes39,654424
Culver City39,452424
Westmont34,291424
West Hollywood34,231424
Manhattan Beach33,122424
Beverly Hills30,764424
Lawndale29,892424
West Rancho Dominguez22,560424, 562
West Carson21,909424
Willowbrook21,642424, 562
Lennox20,289424
Lomita19,724424
Hermosa Beach18,513424
El Segundo16,379424
Walnut Park15,446424, 562
East Rancho Dominguez14,219424, 562
Palos Verdes Estates12,559424
View Park-Windsor Hills11,744424
Del Aire11,115424
Malibu9,574424
West Athens9,064424
Marina del Rey8,844424
Topanga8,781424
Alondra Park8,262424
Rolling Hills Estates7,948424
Ladera Heights7,249424

Got a call from 310?

A 310 number was originally issued in California, but that does not prove the caller is there. 15% of 310 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 787 prefixes in area code 310

Format: (310) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 310

Where is area code 310?
Area code 310 is in California. It covers Torrance, Inglewood, Carson, Compton, Santa Monica, Hawthorne and 30 more cities and towns.
What time zone is area code 310?
Area code 310 is in the Pacific time zone.
Is 310 a toll-free number?
No. 310 is a geographic area code in California. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 310 share its area with 424?
310 and 424 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 310 run out of numbers?
NANPA's latest forecast projects the 310/424 overlay to exhaust in the first quarter of 2043. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in California