The 310 area code serves the affluent Westside of Los Angeles and much of coastal Southern California. Created in 1991 when it split from the original 213, area code 310 has become closely associated with Hollywood glamour, beach communities, and the entertainment industry. If a 310 number has appeared on your caller ID, this guide explains exactly where it comes from, when to call, and how to stay safe.
Quick Summary: Area Code 310 at a Glance
| Detail | Information |
|---|---|
| Area Code | 310 |
| State | California (CA) |
| Major Cities | Beverly Hills, Santa Monica, Malibu, Torrance |
| Time Zone | Pacific Time (PT) |
| Country Code | +1 (USA) |
| Overlay Codes | 424 |
Geographic Coverage & Major Cities
Area code 310 covers the western and southern portions of Los Angeles County, wrapping around the coast from Malibu down through the South Bay to the Los Angeles Harbor. It notably excludes central and downtown Los Angeles, which use 213 and 323.
Key cities and communities in the 310 region include:
- Westside LA — Beverly Hills, West Hollywood, Bel Air, Brentwood, and Westwood (home to UCLA)
- Beach cities — Santa Monica, Venice, Malibu, and Marina del Rey
- South Bay — Torrance, Manhattan Beach, Redondo Beach, Hermosa Beach, and El Segundo
- LA Harbor — San Pedro and the area around Los Angeles International Airport (LAX)
Because 310 spans some of the most expensive real estate in the country, the code carries a premium reputation among businesses and residents alike.
A Brief History of Area Code 310
Area code 310 was created in 1991 when it split from 213, the original Los Angeles code dating back to 1947. The split moved the Westside, the South Bay, and the coastal communities into their own code as Southern California’s population and phone usage soared. Demand kept climbing, and in 2006 the 424 overlay was introduced across the same footprint, making 10-digit dialing mandatory. Today, a 310 number remains strongly associated with the entertainment industry and the prestige of coastal Los Angeles.
Time Zone & Best Time to Call
Phone numbers in the 310 area code use Pacific Time (PT). The region observes Daylight Saving Time, shifting from PST (UTC−8) to PDT (UTC−7) between March and November each year.
How to Dial Phone Numbers in Area Code 310
Southern California uses mandatory 10-digit dialing because of overlay codes.
Calling within the United States or Canada
- 10-digit dialing: Always include the area code — 310-XXX-XXXX.
- 11-digit dialing: You may also dial 1-310-XXX-XXXX with the leading NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 310 + XXX + XXXX
- From Europe or most of Asia: 00 1 310 XXX XXXX
- From any mobile phone: +1 310 XXX XXXX
Is Area Code 310 a Scam? Safety & Protection Tips
Area code 310 is a legitimate Southern California area code, so a 310 call is not inherently a scam. That said, its prestige makes it a favorite target for caller ID spoofing, in which fraudsters disguise their real number to appear as a trusted local or business line. Neighbor spoofing — matching your own area code and prefix — is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Entertainment/casting fraud | Fake “talent agency” or audition calls requesting fees |
| Bank & card impersonation | Alerts about “suspicious activity” seeking your account details |
| Auto-warranty robocalls | Recorded messages about your vehicle’s expiring warranty |
| Utility shut-off threats | Demands for immediate payment to avoid disconnection |
How to report, block, and look up 310 callers
- Never volunteer sensitive information to an unsolicited caller.
- Block the number through your phone settings or a call-screening app.
- Verify the number with a reputable reverse phone lookup before calling back.
- Report the call to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in California
Area code 310 is surrounded by several other Los Angeles-area codes:
- 424 — the overlay that shares 310’s exact geographic footprint
- 213 & 323 — central and downtown Los Angeles
- 818 & 747 — the San Fernando Valley
- 562 (Long Beach) and 626 (Pasadena/San Gabriel Valley)
Heading north? See our guide to the 415 area code for San Francisco. Browse the full California area codes hub or our complete US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border California:
Frequently Asked Questions About Area Code 310
Where is the 310 area code located?
Area code 310 covers the Westside and South Bay of Los Angeles County, including Beverly Hills, Santa Monica, Malibu, and Torrance. It operates on Pacific Time and shares its territory with the 424 overlay.
Is 310 a landline or cell phone area code?
Both. Area code 310 serves landlines, mobile phones, and VoIP numbers throughout coastal Los Angeles. Because of the 424 overlay, all local calls in the region require 10-digit dialing.
Why is the 310 area code considered prestigious?
310 covers some of the wealthiest and most famous neighborhoods in the United States, from Beverly Hills to Malibu. As a result, a 310 number is a sought-after status symbol for businesses in entertainment, real estate, and luxury services.
Should I answer a call from an unknown 310 number?
If you are not expecting it, let the call go to voicemail. Genuine callers leave a message; most scam and robocall numbers do not. Verify any unfamiliar number with a reverse lookup before returning the call.
Related 310 Guides
- Is a 310 call safe? Read Is area code 310 a scam? Spam & safety guide.
- Local coverage: see the Los Angeles area code guide.
- Worried about spam or robocalls? Browse our Scam Alerts directory.