424 Area Code: Los Angeles, CA | Location & Time Zone

The 424 area code is a telephone area code serving the Los Angeles region in Southern California. Introduced in 2006 as an overlay to the existing 310 and 110 area codes, the 424 area code covers the same geographic area, including the Westside of Los Angeles, Santa Monica, Beverly Hills, and many coastal communities. As one of California’s most recognizable area codes, 424 represents a vibrant, diverse region known for entertainment, technology, and beachfront living.

What is the 424 Area Code?

The 424 area code is a geographic telephone code assigned to the western portion of Los Angeles County, California. It was established on July 26, 2006, as an overlay to the 310 and 110 area codes due to the increasing demand for phone numbers in this densely populated and economically active region. An overlay area code means that 424 shares the same geographic territory as 310 and 110, rather than splitting the region into separate zones.

This area code covers some of the most iconic neighborhoods and cities in the Los Angeles metropolitan area, including Santa Monica, Beverly Hills, Culver City, Manhattan Beach, Redondo Beach, Hermosa Beach, Torrance, Inglewood, and the West Los Angeles community. The 424 area code serves both residential and business customers, including major entertainment studios, tech startups, and international corporations headquartered in the region.

424 Area Code Location & Coverage

Cities and Regions Covered

The 424 area code encompasses a significant portion of western Los Angeles County. Major cities and communities served by this area code include Santa Monica, a popular beachfront city known for its pier and vibrant downtown; Beverly Hills, the world-famous city synonymous with luxury and entertainment; Culver City, a hub for film and television production; Manhattan Beach, Hermosa Beach, and Redondo Beach, three scenic South Bay beach cities; Torrance, a major residential and commercial center; Inglewood, home to SoFi Stadium and the Los Angeles International Airport area; West Los Angeles, including neighborhoods like Brentwood and Westwood; Malibu, the scenic coastal community stretching along the Pacific Coast Highway; and El Segundo, a coastal city with a strong aerospace industry presence.

The region also includes portions of Marina del Rey, Playa Vista, Playa del Rey, Hawthorne, and Lawndale. This diverse coverage area represents both affluent coastal communities and working-class neighborhoods, creating a dynamic mix of cultures, industries, and lifestyles.

Geographic Coverage Map

The 424 area code covers approximately 173 square miles of western Los Angeles County, stretching from Malibu in the north along the Pacific coastline down through the South Bay cities to the Palos Verdes Peninsula. The eastern boundary generally follows La Cienega Boulevard and Sepulveda Boulevard, while the western boundary is defined by the Pacific Ocean. This strategic location includes Los Angeles International Airport (LAX), one of the busiest airports in the world, and major commercial corridors along Wilshire Boulevard, Santa Monica Boulevard, and Pacific Coast Highway.

Time Zone Information

The 424 area code region operates in the Pacific Time Zone, which is 8 hours behind Coordinated Universal Time (UTC-8) during standard time and 7 hours behind (UTC-7) during daylight saving time. Daylight saving time typically begins on the second Sunday in March and ends on the first Sunday in November. This time zone alignment is crucial for businesses coordinating with partners across different regions, and you can easily compare times across different timezones when scheduling international calls or meetings.

424 Area Code Details

History of 424 Area Code

When Was 424 Created?

The 424 area code was officially activated on July 26, 2006, by the North American Numbering Plan Administrator (NANPA) to address the shortage of available phone numbers in the 310 area code region. The Los Angeles Westside and beach communities had experienced tremendous population growth and business expansion throughout the 1990s and early 2000s, leading to unprecedented demand for new telephone numbers. Rather than geographically splitting the 310 area code, which would have forced some residents and businesses to change their established phone numbers, telecommunications regulators chose to implement an overlay solution.

The introduction of 424 meant that new phone number assignments in the region would receive the 424 area code, while existing 310 numbers remained unchanged. This approach minimized disruption for established businesses and residents who had built brand recognition around their 310 phone numbers.

Area Code Changes and Overlays

The 424 area code was preceded by significant area code history in the region. Originally, the entire Los Angeles area was served by the 213 area code, one of the original area codes established in 1947 under the North American Numbering Plan. As Los Angeles grew, 310 was split from 213 in 1991 to serve the western and coastal portions of Los Angeles County. The 310 area code quickly became associated with entertainment industry professionals, beach culture, and affluent Westside communities.

By the mid-2000s, the rapid proliferation of mobile phones, fax lines, and internet-connected devices created another number shortage, necessitating the 424 overlay. More recently, in 2017, the 110 area code was added as an additional overlay to the same geographic region, creating a three-way overlay system where 310, 424, and 110 all serve the identical territory. This means that neighbors on the same street might have phone numbers with different area codes, and mandatory 10-digit dialing (area code + seven-digit number) became required for all calls, even local ones.

How to Call 424 Area Code

Dialing Within the Area Code

When making calls within the 424 area code region, you must use 10-digit dialing due to the overlay configuration with 310 and 110. This means you need to dial the full area code plus the seven-digit phone number, even for local calls. The format is: 424-XXX-XXXX. You do not need to dial “1” before the area code for local calls within the same region, though some phone systems may accept it. This 10-digit dialing requirement has been mandatory since the overlay implementation to ensure calls are properly routed to the intended recipient.

Dialing From Other Area Codes

When calling a 424 number from another area code within the United States or Canada, you must dial “1” followed by the area code and the seven-digit phone number. The complete format is: 1-424-XXX-XXXX. This long-distance dialing format applies whether you’re calling from elsewhere in California or from another state. Depending on your phone plan, long-distance charges may apply, though many modern mobile and landline plans now include unlimited nationwide calling.

International Dialing

To call a 424 area code number from outside the United States, you need to dial your country’s international access code, followed by the U.S. country code “1,” then the area code and phone number. The format is: +1-424-XXX-XXXX or 011-1-424-XXX-XXXX (from most countries). The “+” symbol represents your country’s international dialing prefix, which varies by location. For example, from the United Kingdom, you would dial 00-1-424-XXX-XXXX, while from Australia, you would dial 0011-1-424-XXX-XXXX.

Nearby Area Codes

Population & Demographics

The 424 area code region serves an estimated population of approximately 1.8 to 2 million residents across western Los Angeles County. This area represents one of the most diverse and economically vibrant regions in the United States, with a mix of residential neighborhoods, commercial districts, and entertainment industry hubs. The population density is high, particularly in cities like Santa Monica, Culver City, and Inglewood, while coastal areas like Malibu have lower density due to geographic constraints and zoning regulations.

The demographic composition is remarkably diverse, with significant Hispanic/Latino, White, Asian, and African American populations. The region is home to a highly educated workforce, with many residents employed in entertainment, technology, aerospace, healthcare, and professional services. Major employers include entertainment studios such as Sony Pictures, Culver Studios, and numerous production companies, as well as technology firms in the “Silicon Beach” area of Playa Vista and Santa Monica.

Economically, the 424 area code region boasts some of the highest median household incomes in California, particularly in Beverly Hills, Manhattan Beach, and Santa Monica, though income levels vary considerably across different neighborhoods. The area’s real estate market is among the most expensive in the nation, driven by coastal location, entertainment industry proximity, excellent schools, and desirable climate. Tourism plays a significant economic role, with millions of visitors annually drawn to beaches, shopping districts like Rodeo Drive, cultural attractions, and entertainment venues.

Frequently Asked Questions

Is 424 a California area code?

Yes, 424 is a California area code specifically serving the western portion of Los Angeles County, including Santa Monica, Beverly Hills, and the South Bay beach cities. It operates as an overlay to the 310 and 110 area codes in the same geographic region.

When was the 424 area code introduced?

The 424 area code was introduced on July 26, 2006, as an overlay to the existing 310 area code to meet the growing demand for telephone numbers in the Los Angeles Westside and coastal communities.

Do I need to dial the area code for local calls in the 424 region?

Yes, you must use 10-digit dialing (area code + phone number) for all calls within the 424/310/110 overlay region, even for local calls. This requirement was implemented due to the overlay configuration where multiple area codes serve the same geographic area.

What is the difference between 424 and 310 area codes?

Both 424 and 310 area codes serve the exact same geographic region in western Los Angeles County. The 310 area code was established first in 1991, while 424 was added as an overlay in 2006 when available 310 numbers were depleted. There is no geographic or functional difference between the two codes.

What major cities use the 424 area code?

Major cities served by the 424 area code include Santa Monica, Beverly Hills, Culver City, Torrance, Inglewood, Manhattan Beach, Hermosa Beach, Redondo Beach, Malibu, El Segundo, and West Los Angeles neighborhoods.

Can I request a specific area code (424 vs 310) for my new phone number?

When obtaining a new phone number in this region, you may request a preference for either 424, 310, or 110, but availability depends on your telephone service provider’s inventory. The 310 area code is often more sought after due to its longer history and association with the entertainment industry, but 424 numbers are more readily available.

What time zone does the 424 area code use?

The 424 area code operates in the Pacific Time Zone (PST/PDT), which is UTC-8 during standard time and UTC-7 during daylight saving time. If you need to schedule calls or meetings across different time zones, you can use a date calculator to coordinate timing effectively.

Conclusion

The 424 area code represents a vital part of the Los Angeles telecommunications infrastructure, serving the iconic Westside and coastal communities of Los Angeles County. Since its introduction in 2006 as an overlay to the established 310 area code, 424 has become an integral identifier for this dynamic region that blends entertainment industry glamour, technological innovation, beach culture, and diverse communities. Understanding the 424 area code, its geographic coverage, time zone, and dialing requirements helps residents, businesses, and visitors navigate communications in one of California’s most influential regions. Whether you’re calling locally or from across the globe, the 424 area code connects you to the heart of Southern California’s Westside.