310 Area Code: West Los Angeles County
From the North American Numbering Plan Administrator (NANPA), checked October 13, 2026.
310 is an area code for the western part of Los Angeles County, California. It shares its area with 424, which serves the same places.
Local 310 numbers available
None found
Twilio's number search found no local 310 numbers that can take calls, checked October 15, 2026. CallFlux buys its tracking numbers through Twilio. We run this search at most once a day, and one search lists at most 30 numbers. Numbers come and go, so a search in the CallFlux dashboard shows what is available at that moment.
310 area code at a glance
Places the 310 area code covers
“The 310 NPA serves the western portion of Los Angeles County in Southern California”
NANPA's map of 310 is in Planning Letter PL-347 (PDF).[13]
Rate centers NANPA lists for 310
NANPA's rate center report lists 16 rate centers for 310, as of October 13, 2026.[15]
- Avalon
- Beverly Hills
- Compton: Compton DA
- Compton: Gardena DA
- Culver City
- El Segundo
- Hawthorne
- Inglewood
- Lomita
- Malibu
- Redondo
- San Pedro
- Santa Monica: Mar Vista DA
- Santa Monica: Santa Monica DA
- Torrance
- West Los Angeles
Area codes that share the 310 area
In an overlay, more than one area code serves the same area. NANPA lists 310 in the 310/424 overlay. So 424 serves the same area as 310.[3]
“The new 424 NPA will serve the same geographic area currently served by the existing 310 NPA.”
Get a local 310 tracking number
CallFlux tracking numbers are picked by area code. In the CallFlux dashboard you type 310, search the numbers available in it and choose one. Calls to that number forward to the phone you set, and you can record them, assign the number to a campaign and swap it onto your website, so each call shows which ad or page it came from.
A local tracking number is $1.15 a month, on top of a CallFlux plan.
Frequently asked questions
Where is the 310 area code?
310 is an area code for the western part of Los Angeles County, California. It shares its area with 424, which serves the same places.
What area codes share the 310 area?
NANPA lists 310 in the 310/424 overlay. So 424 serves the same area as 310.
What time zone is the 310 area code in?
NANPA lists Pacific as the predominant time zone for 310.
How do you dial a local call in the 310 area code?
NANPA lists 1 + 10 digits as the predominant way to dial both local and toll calls within 310.
When did the 310 area code start?
NANPA lists November 2, 1991 as the date 310 was placed in service.
Can I get a local 310 phone number for my business?
Our latest search, on October 15, 2026, found no local 310 numbers. Numbers come and go, so search 310 again in the CallFlux dashboard. A local tracking number is $1.15 a month, on top of a CallFlux plan.
Sources
Every fact on this page, the words it rests on and the date it was checked. NANPA writes NPA for an area code.
[1] NANPA lists 310 as an area code in California.
“LOCATION: CA”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[2] NANPA lists November 2, 1991 as the date 310 was placed in service.
“IN_SERVICE_DT: 02-Nov-1991”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[3] NANPA lists 310 as part of the 310/424 overlay.
“OVERLAY_COMPLEX: 310/424”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[4] NANPA lists 213 as the parent area code of 310.
“PARENT_NPA_ID: 213”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[5] NANPA lists Pacific as the predominant time zone of 310.
“TIME_ZONE: P”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[6] NANPA's TIME_ZONE field gives a code's predominant time zone or zones.
“Predominant time zone(s) for NPA”
NANPA NPA Database field definitions · checked October 13, 2026
[7] In NANPA's field definitions, P stands for Pacific.
“P-Pacific”
NANPA NPA Database field definitions · checked October 13, 2026
[8] NANPA lists 1 + 10 digits as the predominant way to dial a local call within 310.
“HOME_NPA_LOCAL_CALLS: 1+10D”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[9] NANPA's HOME_NPA_LOCAL_CALLS field gives the predominant dialing pattern for local calls.
“Predominant dialing pattern on Home NPA Local Calls”
NANPA NPA Database field definitions · checked October 13, 2026
[10] NANPA lists 1 + 10 digits as the predominant way to dial a toll call within 310.
“HOME_NPA_TOLL_CALLS: 1+10D”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[11] NANPA's HOME_NPA_TOLL_CALLS field gives the predominant dialing pattern for toll calls.
“Predominant dialing pattern on Home NPA Toll Calls”
NANPA NPA Database field definitions · checked October 13, 2026
[12] In NANPA's field definitions, 1+10D stands for 1 + 10 digits.
“1+10D - one plus ten digits”
NANPA NPA Database field definitions · checked October 13, 2026
[13] NANPA's database points to Planning Letter PL-347 for a map of 310.
“MAP: 347”
NANPA NPA Database (file dated October 13, 2026) · checked October 13, 2026
[14] NANPA's rate center report puts all 16 of 310's rate centers in the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.
“Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area”
NANPA NPA Rate Center Report (created October 13, 2026) · data · checked October 13, 2026
[15] NANPA's rate center report lists 16 rate centers for 310.
“AVALON; BEVERLY HILLS; COMPTON:COMPTON DA; COMPTON:GARDENA DA; CULVER CITY; EL SEGUNDO; HAWTHORNE; INGLEWOOD; LOMITA; MALIBU; REDONDO; SAN PEDRO; SANTA MONICA:MAR VISTA DA”
NANPA NPA Rate Center Report (created October 13, 2026) · data · checked October 13, 2026
[16] NANPA describes the 310 area as the western part of Los Angeles County.
“The 310 NPA serves the western portion of Los Angeles County in Southern California”
NANPA Planning Letter PL-347 (September 8, 2005) · checked October 13, 2026
[17] 424 serves the same area as 310.
“The new 424 NPA will serve the same geographic area currently served by the existing 310 NPA.”
NANPA Planning Letter PL-347 (September 8, 2005) · checked October 13, 2026
[18] NANPA's glossary uses NPA, Numbering Plan Area, for an area code.
“Numbering Plan Area (Area Code)”
NANPA glossary · checked October 13, 2026