424 Area Code: Beverly Hills, LA Westside & South Bay Guide

On this page:

• Introduction
• What Is the 424 Area Code?
• Cities and Communities in the 424 Area Code
• Time Zone, Dialing Format, and Phone Number Structure
• Business Landscape: Economy and Key Sectors
• Why Your Business Needs a Virtual 424 Number
• Conclusion
• Frequently Asked Questions

Introduction

Few area codes represent as much concentrated economic and cultural output as the territory shared by 424 and its originating code, 310. Stretching along the Pacific coastline of Los Angeles County from Malibu's celebrity canyon estates through Santa Monica's venture-funded startups, Beverly Hills' entertainment powerhouses, Culver City's streaming production campuses, El Segundo's aerospace defense corridor, Hawthorne's private space manufacturing, and Inglewood's billion-dollar sports venue district, this thin coastal strip generates a disproportionate share of the world's entertainment content, defense electronics, commercial space vehicles, and professional sports spectacle. The 424 area code was introduced in 2006 as a number overlay for 310 — itself split from the Los Angeles 213 code in 1991 — providing a second pool of numbers for the same westside and South Bay geography without requiring any existing 310 subscriber to change their number.

For businesses reaching Sony Pictures' and Amazon Studios' production teams, SpaceX's supplier and engineering networks, Snap Inc.'s vendor partners, the Cedars-Sinai and UCLA Health systems, Mattel's global supply chain, LAX's aviation community, or the live-event economy anchoring SoFi Stadium and Intuit Dome in Inglewood, a virtual 424 phone number from letsdial delivers trusted LA westside presence with same-day activation — a (424) caller ID that signals genuine local roots from Malibu to the South Bay.

What Is the 424 Area Code?

The 424 area code is a geographic NANP number overlay sharing the exact same territory as 310 — the western coastal portions of Los Angeles County. Los Angeles was served by 213 for decades; as Southern California's population exploded, 213 was progressively split: the San Fernando Valley received 818 in 1984; the westside and South Bay received 310 in 1991; Long Beach and the Gateway Cities became 562 in 1997; and Hollywood and mid-city became 323 in 1998.

By the mid-2000s, even the 310 territory was running short of number blocks, driven by mobile phones, broadband, and the entertainment and technology industries clustering in Santa Monica, Culver City, and Playa Vista. In 2006 the 424 overlay was activated, adding a new pool of numbers for the same 310 geography and requiring ten-digit dialing for all local calls. Neighboring area codes include 310 (same territory), 213 (downtown LA), 323 (Hollywood, East LA), 818 (San Fernando Valley), 562 (Long Beach), and 805 (Ventura County). More detail sits on our virtual 424 phone number page.

Cities and Communities in the 424 Area Code

The 424 area code covers the same geography as 310 — the western and South Bay portions of Los Angeles County — including independent cities such as Beverly Hills, Santa Monica, and Culver City, and LA neighborhoods including Westwood, Brentwood, Pacific Palisades, Playa Vista, Venice, Marina del Rey, and Westchester. Major communities:

• Torrance (~145,000) — South Bay commercial hub, Del Amo Fashion Center, Honda North America HQ, aerospace and tech employers
• Inglewood (~108,000) — SoFi Stadium (Rams & Chargers), Intuit Dome (Clippers), Hollywood Park, LAX proximity
• Carson (~93,000) — industrial and logistics hub, Dignity Health Sports Park (LA Galaxy), CalState Dominguez Hills
• Santa Monica (~92,000) — Silicon Beach (Snap, Hulu, Google, IMAX), beach tourism, 3rd Street Promenade
• Hawthorne (~88,000) — SpaceX headquarters and factory, Northrop Grumman, Tesla design studio
• Redondo Beach (~68,000) — Northrop Grumman Space Systems campus, South Bay beach community, King Harbor
• Culver City (~40,000) — Sony Pictures, Amazon MGM Studios, Apple TV+, HBO — streaming media epicenter
• Beverly Hills (~32,000) — global luxury retail, entertainment agencies and talent, Cedars-Sinai adjacent
• Manhattan Beach (~35,000) — high-income residential, aerospace executive community, beach volleyball
• El Segundo (~17,000) — Aerospace Alley (Boeing, Raytheon, Northrop, L3Harris, Aerospace Corp), Mattel HQ, LAX border

> [NOTE] Did You Know: SpaceX, headquartered in Hawthorne within the 424 area code, is the world's most active commercial launch provider — manufacturing Falcon 9, Falcon Heavy, and Starship hardware. Its campus sits adjacent to LAX and within a few miles of Boeing, Raytheon, Northrop Grumman, and the Aerospace Corporation, making the El Segundo–Hawthorne corridor one of the highest concentrations of aerospace engineering talent anywhere in the world. More detail sits on our AI receptionist page.

Time Zone, Dialing Format, and Phone Number Structure

The 424 area code operates entirely in the Pacific Time Zone (PT) — UTC−8 in winter (PST) and UTC−7 during daylight saving (PDT). All of Los Angeles County observes Pacific Time. Ten-digit dialing is required for all calls within the 310/424 overlay territory, including calls between two numbers in the same neighborhood; seven-digit local dialing was retired when the overlay activated in 2006.

• Full dialing format: 1 + 424 + 7-digit local number
• Local dialing (within 310/424): ten-digit dialing required — 7-digit dialing retired since the 2006 overlay
• Display format: (424) XXX-XXXX
• Best outbound window: 9:00 AM – 12:00 PM PT and 2:00 PM – 5:00 PM PT
• Eastern Time callers: dial 12:00 PM – 8:00 PM ET to reach 424 during business hours
• Central Time callers: dial 11:00 AM – 7:00 PM CT to reach 424 during business hours
• Overlay partner: 310 (the original 1991 code) covers identical geography; 424 and 310 are local calls to each other

Business Landscape: Economy and Key Sectors

The 424/310 territory is one of the most economically concentrated coastal strips in the United States — roughly 450 square miles hosting the world's leading private space company, the studios of the largest streaming services, the South Bay's Aerospace Alley, Silicon Beach's tech cluster, two NFL teams, the NBA's Clippers, LAX, and world-class academic medical centers.

• Streaming and film production (Culver City / Beverly Hills) — Sony Pictures, Amazon MGM Studios, and Apple TV+, plus the WME/CAA/UTA agency corridor in Beverly Hills
• Silicon Beach technology cluster (Santa Monica / Playa Vista) — Snap Inc. HQ, plus Google, Meta, YouTube, Hulu, and Riot Games offices
• Aerospace and defense (El Segundo / Hawthorne / Redondo Beach) — Boeing, Raytheon, Northrop Grumman, L3Harris, the Aerospace Corporation, and SpaceX's rocket factory
• Los Angeles International Airport (LAX) — the fifth-busiest airport in the world, anchoring a vast aviation, cargo, and logistics ecosystem
• SoFi Stadium, Intuit Dome, and the Inglewood sports district — home to the Rams, Chargers, and Clippers, plus Super Bowls and the 2028 Olympics
• Cedars-Sinai Medical Center and UCLA Health — two major academic medical systems employing tens of thousands and driving healthcare procurement
• Mattel (El Segundo) — the world's largest toy company (Barbie, Hot Wheels, Fisher-Price), headquartered in the 424 footprint
• Honda North America (Torrance) — the automaker's operational headquarters anchoring the South Bay's professional-services economy

What makes the 424 economy unusual is how much these industries buy from one another. A streaming studio in Culver City contracts visual-effects and post-production vendors in Santa Monica, an aerospace prime in El Segundo sources machined components from shops across the South Bay, and a venue operator in Inglewood coordinates with hospitality, security, and logistics firms up and down the coast. Almost all of that procurement still runs on the phone, and a caller ID that reads as local to the 310/424 footprint clears the first hurdle before a single word is spoken — which is why a recognizable number matters more here than in a purely residential market.

Why Your Business Needs a Virtual 424 Number

A virtual 424 phone number from letsdial gives your business an authentic LA westside identity — a recognized Beverly Hills, Santa Monica, or South Bay calling presence — without requiring a physical office in Los Angeles. The (424) caller ID reads as immediately local to procurement teams who screen unfamiliar out-of-state area codes before answering.

• Entertainment and streaming access: a local caller ID for the production companies, studios, and agencies concentrated in Culver City and Beverly Hills
• Aerospace and defense supply chain: higher answer rates when reaching Boeing, Raytheon, Northrop Grumman, and SpaceX suppliers in the El Segundo–Hawthorne corridor
• Silicon Beach tech vendor targeting: local (424) presence that resonates with Snap, Google, Meta, and Hulu vendor-relations teams
• STIR/SHAKEN verified caller ID: letsdial 424 numbers carry full attestation so calls are carrier-authenticated, not flagged as spam
• 24/7 AI inbound coverage: pair your 424 number with the letsdial AI receptionist to capture and route every inbound call
• Full LA coverage: combine 424/310 (westside/South Bay) with 213 (downtown), 323 (Hollywood), or 818 (Valley) on one UCaaS platform

424 is officially documented under the North American Numbering Plan, which governs area code assignments across the US, Canada, and the Caribbean. That record is published in full as 424.

Conclusion

The 424 area code covers a coastal strip of Los Angeles County that generates a staggering concentration of cultural, technological, and economic output — global entertainment produced in Culver City, spacecraft assembled in Hawthorne, consumer technology invented in Santa Monica, defense satellites designed in El Segundo, championships played in Inglewood, and patients treated at Cedars-Sinai. For any business targeting the westside's entertainment networks, the South Bay's aerospace supply chains, Silicon Beach's tech market, or the Inglewood sports economy, a verified local 424 number from letsdial is the most direct path to trusted LA westside presence. Start your free trial today and activate your 424 number within minutes.

Frequently Asked Questions