The 310 area code covers the west and south-west of Los Angeles County in California. It includes Santa Monica, Beverly Hills, Malibu, Torrance and the beach cities. It shares the area with the 424 area code.
Read on for the exact location, the list of cities, the time zone, how 310 was created and how to deal with unknown 310 calls.
310 Area Code Quick Facts
| State | California |
| Location | West Los Angeles, the South Bay and Santa Catalina Island |
| Time zone | Pacific Time (UTC-8, UTC-7 during daylight saving time) |
| In service since | November 2, 1991 |
| Type | Geographic area code |
| Shares its area with | 424 (overlay since July 26, 2006) |
| Toll-free? | No |
Look up any other code with our free area code lookup tool.
Where Is the 310 Area Code Located?
Area code 310 is located in Los Angeles County, along the coast. It covers three kinds of places.
The Westside
- Santa Monica
- Beverly Hills
- Culver City
- West Los Angeles neighborhoods
- Malibu
The South Bay
- Torrance
- Manhattan Beach
- Redondo Beach
- Inglewood
- Carson
- Compton
Offshore and beyond
- Santa Catalina Island
- A small part of Ventura County
Downtown Los Angeles is not in 310. It uses 213 and 323. Long Beach is in 562.
What Time Zone Is the 310 Area Code In?
The 310 area code is on Pacific Time.
- Pacific Standard Time (PST), UTC-8, in winter
- Pacific Daylight Time (PDT), UTC-7, from mid March to early November
When it is 9 a.m. in Santa Monica, it is noon in New York.
History of the 310 Area Code
- 1947: 213 covers Southern California.
- November 2, 1991: 310 is created as a split from 213. It takes the Westside, the South Bay and the Long Beach area.
- January 25, 1997: the eastern part of 310, including Long Beach, becomes 562.
- July 26, 2006: 424 is added as an overlay, and dialing the area code becomes mandatory for every call.
The 424 overlay had a long and bumpy road. It was first announced in 1999, but Westside residents pushed back against ten-digit dialing. California passed a law that year which delayed the plan, and the overlay did not start for almost seven more years.
More background on the parent codes is in our 213 area code guide and 323 area code guide.
Why 310 Has a Reputation
The 310 area takes in some of the best-known addresses in the country, from Beverly Hills to Malibu. It is home to talent agencies, law firms, studios and tech companies. For that reason a 310 number is often treated as a status symbol in Los Angeles, and many businesses ask for one by name. New lines today are more likely to be given 424.
How to Dial a 310 Number
- From the US or Canada: 1 + 310 + the seven-digit number
- From another country: your exit code + 1 + 310 + the seven-digit number
Is a Call From 310 a Scam?
Usually not. But a number that suggests Beverly Hills or Santa Monica looks trustworthy, and scammers take advantage of that with spoofed caller ID.
Calls to be careful with:
- Casting, modeling or music “agents” who ask for an upfront fee
- Investment or crypto offers from a firm you have never heard of
- Luxury rental or vacation deals that require a deposit by wire or payment app
- Callers posing as a bank, the IRS or a court
What to do with an unknown 310 call
- Let it go to voicemail and listen first.
- Search the full number and the company name online.
- Do not send money or personal documents to someone who contacted you first.
- Block the number.
- Report scam calls at reportfraud.ftc.gov and register at donotcall.gov.
- Forward spam texts to 7726 (SPAM).
How to Get a 310 Phone Number
- Carriers: new lines in the area get 310 or 424 depending on what is free. You can ask for 310, but it is not guaranteed.
- VoIP and virtual number providers: search their inventory for 310 numbers and forward calls to your existing phone.
- Porting: a 310 number you already own can move with you to a new provider.
See our guide to virtual phone numbers for the details. If you want one number for the whole country, read about the 833 area code.
Area Codes Near 310
| 424 | Same area as 310 |
| 213, 323, 738 | Downtown and central Los Angeles |
| 818, 747 | San Fernando Valley |
| 562 | Long Beach, Norwalk, Whittier |
| 805, 820 | Ventura County and the Central Coast |
| 714, 657 | Northern Orange County |
Going up the coast? See our 805 area code guide.
310 Area Code FAQs
What city is area code 310?
Several cities share it. The best known are Santa Monica, Beverly Hills, Torrance, Malibu, Inglewood and the beach cities.
Is 310 Los Angeles?
Yes, it is in Los Angeles County, but it covers the Westside and South Bay, not downtown.
What is the difference between 310 and 424?
They cover the same area. 310 dates from 1991 and 424 was added in 2006.
Is 310 toll-free?
No. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
What time zone is 310?
Pacific Time.
Final Word
The 310 area code covers West Los Angeles and the South Bay on Pacific Time. It has been in service since 1991 and shares its area with 424. As always, verify an unknown caller before you trust the number on the screen.
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