Introduction
The 310 area code answers across the Los Angeles Westside and South Bay — Beverly Hills' talent agencies, Santa Monica's tech offices, Culver City's film studios, and the aerospace campuses of El Segundo and Hawthorne, all the way out to Los Angeles International Airport and Catalina Island offshore.
This guide maps where the 310 area code reaches, the entertainment, aerospace, and technology economy that defines it, its Pacific Time calling window, its 1991 origin as a split from the 213 area code, and how to put a Los Angeles Westside number in front of customers in minutes.
Where the 310 Area Code Reaches
The 310 area code covers the coastal arc of Los Angeles County, from the Westside neighborhoods bordering Hollywood down through the South Bay beach cities, plus Santa Catalina Island roughly twenty-two miles offshore.
- Beverly Hills — the Westside city synonymous with the entertainment industry and Rodeo Drive luxury retail
- Santa Monica — the beachfront city anchoring the Silicon Beach tech corridor
- Culver City — home to Sony Pictures Studios and a dense film-and-television production base
- El Segundo — the South Bay aerospace hub built around The Aerospace Corporation and Mattel's headquarters
- Hawthorne — the South Bay city home to SpaceX's headquarters and rocket-manufacturing complex
- Torrance and Redondo Beach — South Bay cities anchoring a mix of manufacturing, port-adjacent logistics, and beach tourism
- Marina del Rey — the unincorporated harbor community home to one of the largest man-made small-craft marinas in the country
- Malibu — the coastal enclave stretching along the Pacific Coast Highway northwest of Santa Monica
Because the footprint pairs entertainment-industry wealth with aerospace engineering and tech startups, a 310 area code line can signal a Beverly Hills talent agency, a Hawthorne aerospace supplier, or a Santa Monica app studio — one prefix carrying several distinct Los Angeles identities.
Entertainment and Talent: Beverly Hills, Century City, and Culver City
The eastern half of the 310 area code sits at the center of the entertainment industry, and few zip codes in the world pack in more film, television, and talent business per square mile.
Beverly Hills and Rodeo Drive
Beverly Hills is inseparable from the entertainment industry, home to a dense concentration of talent agencies, entertainment law firms, and management companies. Rodeo Drive's luxury retail corridor adds a global shopping-tourism draw that keeps the city's economy running well beyond the industry itself.
Sony Pictures Studios in Culver City
Culver City has been a film-production center since the silent era, and today Sony Pictures Studios occupies the historic lot once home to MGM, still producing film and television on the same soundstages. The city's studio backlot heritage keeps production, post-production, and visual-effects companies clustered nearby.
Century City and Talent Agencies
Century City, built on the former MGM backlot, now houses some of the industry's biggest talent agencies alongside entertainment law and finance firms, giving the eastern 310 footprint a second major entertainment-business hub beyond Beverly Hills itself.
For a business working the wider LA market, the 310 area code shares its territory with the 424 area code overlay.
A full California area codes breakdown maps how the state's prefixes fit together.
The full history of how regulators handle splits and overlays nationwide is documented in the FCC's overview of area code overlays.
Aerospace and Tech: El Segundo, Hawthorne, and Silicon Beach
West and south of the entertainment core, the 310 area code turns into an aerospace-and-technology corridor built along the coast from LAX down through the South Bay.
LAX and the Aerospace Corridor
Los Angeles International Airport sits at the center of the 310 footprint, one of the busiest airports in the world and a major driver of the surrounding logistics and aerospace economy. Nearby El Segundo hosts The Aerospace Corporation and Mattel's global headquarters, giving the small beach city an outsized industrial and consumer-brand footprint.
SpaceX in Hawthorne
Hawthorne is home to SpaceX's headquarters and primary rocket-manufacturing complex, putting a major share of the country's private space industry inside the 310 area code. The company's presence has pulled a wide network of aerospace suppliers and engineering firms into the surrounding South Bay cities.
Silicon Beach and Santa Monica
Santa Monica anchors what the industry calls Silicon Beach, a cluster of technology, gaming, and media startups drawn by the coastal setting and proximity to both the entertainment industry and LAX — Snap Inc., the parent company of Snapchat, has long kept its headquarters in the city, giving Silicon Beach one of its most recognizable anchor tenants. That mix gives the western half of the 310 footprint a tech identity layered on top of its beach-town character.
Between the entertainment core and the aerospace-and-tech corridor, a 310 line has to speak to two very different kinds of caller — a studio executive one moment, a rocket-parts supplier or a startup founder the next.
Time Zone and Calling Hours for the 310 Area Code
The entire 310 area code observes Pacific Time — UTC-8 (PST) in winter and UTC-7 (PDT) during Daylight Saving. The LA Westside and South Bay share the clock with the rest of California and the West Coast.
East Coast teams calling area code 310 are three hours ahead, so early-afternoon Eastern outreach lands mid-morning on the Westside — plan around the three-hour gap to catch the full Los Angeles business day.
310 History
The 310 area code was created on November 2, 1991, as a split from the original 213 area code, which had covered all of Los Angeles County since 1947. Explosive population growth alongside a boom in fax machines, pagers, and second phone lines through the 1980s exhausted 213's numbering supply well ahead of schedule.
310 originally covered a much larger stretch of coastal and southern Los Angeles County, including Long Beach. On January 25, 1997, that southeast portion split again into the new 562 area code, leaving 310 with the Westside and South Bay footprint it holds today.
Continued growth pushed 310 toward exhaustion once more, and on July 26, 2006, the 424 area code was added as an overlay — the first overlay ever introduced in California. Every local call in the region has required 10-digit dialing ever since.
How to Get a 310 Area Code Number
- Cloud phone platform — search available 310 numbers in real time and activate a line the same day, with no hardware and no technician visit.
- Port your existing number — already run a 310 line on another carrier? Move it over without downtime and keep the number active through the transition.
- Wireless SIM or landline carrier — valid for a single physical handset, but slower to provision and harder to scale seat by seat.
With letsdial, a UCaaS (Unified Communications as a Service) platform built for exactly this, a 310 number provisions in under three minutes on a free trial, no credit card required, so an LA Westside presence can be answering calls the same afternoon.
Call Trust in the LA Westside Market
The 310 area code market runs on entertainment-industry referrals, aerospace-contractor relationships, and tech-investor introductions — settings where an unknown out-of-state number gets screened before it's answered, sometimes by an assistant or a gatekeeper before it ever reaches the intended contact. A recognizable local prefix earns the first hearing, and in a market that fields constant cold outreach from every direction, that first impression often decides whether the conversation happens at all.
STIR/SHAKEN for Entertainment, Aerospace, and Tech
Apply STIR/SHAKEN attestation so every outbound 310 call arrives verified with your registered business name on screen. As a UCaaS provider, letsdial registers text campaigns for 10DLC compliance from day one and warms new numbers before scaling volume, so a verified line reads as Westside-local rather than out-of-area.
A trusted 310 line is the difference between a Beverly Hills agency contact or a Hawthorne aerospace supplier picking up the call and routing it straight to voicemail.
Conclusion
The 310 area code covers one of the most recognizable stretches of Los Angeles — an entertainment core running through Beverly Hills, Century City, and Culver City, and an aerospace-and-tech corridor running from LAX through El Segundo, Hawthorne, and Silicon Beach, with Malibu and Marina del Rey rounding out its coastal identity. From Rodeo Drive to SpaceX's rocket factory, it identifies a business as genuinely LA Westside.
Standing up a line takes minutes on a cloud UCaaS platform, with STIR/SHAKEN attestation so calls arrive verified rather than flagged. Put a 310 number in front of entertainment contacts, aerospace partners, and tech investors, and let a familiar prefix open the door first, with letsdial handling the setup end to end.
Frequently Asked Questions
Written by Aryan Khan · July 28, 2026
Reply to the author
