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Where Is 424 Area Code?

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Database Updated: July 10, 2025
California Phone Number Lookups
Where Is 424 Area Code?

Where is Area Code 424?

Area Code 424 is designated for various regions in California, specifically covering the southwestern portion of Los Angeles County. This area code is administered under the purview of the FCC phone numbering resource and adheres to regulations set forth by the Federal Communications Commission (FCC) located at 45 L Street NE, Washington, DC 20554, as well as oversight from the California Public Utilities Commission (CPUC) located at 505 Van Ness Avenue, San Francisco, CA 94102.

Major cities within Area Code 424 include:

  • Santa Monica
  • Beverly Hills
  • Inglewood
  • Torrance
  • Redondo Beach
  • Malibu

This area code is typically associated with commercial, residential, and governmental facilities throughout the Westside, South Bay, and surrounding communities. Due to significant population density, it is common to encounter 424 phone numbers for both personal and business purposes in these locations.

What time zone is 424 area code in the USA?

The 424 area code falls under the Pacific Time Zone (PT). This designation involves:

  • Standard Time: Pacific Standard Time (PST) during the cooler months (UTC–8)
  • Daylight Saving: Pacific Daylight Time (PDT) when Daylight Saving Time (DST) is in effect (UTC–7)

Local authorities follow the statewide seasonal clock adjustment, consistent with the guidelines published by the CPUC official rulings on area codes. Individuals and businesses operating in this region are advised to keep track of time changes annually.

History of the 424 Area Code

The 424 area code was introduced to sustain telephone numbering demands driven by rapid growth in Southern California. Initially associated with the 310 area code, 424 began as an overlay. Implementation efforts were coordinated between service providers and regulatory agencies such as the California Public Utilities Commission (CPUC) at 505 Van Ness Avenue, San Francisco, CA 94102.

Below is a concise timeline:

  • 1990s: Area code 310 became highly utilized, creating the need for additional numbering resources.
  • Mid-2000s: Overlay planning for area code 424 was undertaken to avoid further splits in the region.
  • 2006: Official establishment of 424 as an overlay to 310, approved by the FCC phone numbering resource.
  • 2011: Implementation of 424 began, and new telephone numbers were assigned under this overlay code.

The primary reasons for these changes were to ensure the availability of new phone numbers for residents, businesses, and governmental offices, all while maintaining local call connectivity under existing regulations.

How Many People Use the 424 Area Code?

The 424 area code significantly contributes to the communication infrastructure of Los Angeles County and nearby locales. While precise user data can vary, estimations show that millions of people reside in the broader region served by the combined 310/424 numbering plan. Population estimates account for a mix of residential, industrial, and commercial lines. Officials have noted that the continued population growth and the presence of major industries (such as entertainment, technology, and trade) drive ongoing demand for numbering resources.

Key points regarding user prevalence include:

  • Shared overlay with 310 accommodates dense population clusters.
  • Large volumes of assigned numbers serve both urban centers and seaside communities.
  • Regulatory authorities anticipate consistent demand, requiring monitoring of inventory.

Is the 424 Area Code Toll-Free?

The 424 area code is not classified as toll-free. It is a geographic area code covering substantial portions of Los Angeles County. Calls placed to 424 numbers are generally subject to standard local or long-distance charges depending on the caller’s telephone service plan.

Toll-free numbers are governed by separate toll-free area codes (e.g., 800, 888, 877, 866, 855, 844, and 833) under the oversight of regulatory bodies such as the Federal Communications Commission (FCC) at 45 L Street NE, Washington, DC 20554. Subscribers to a 424 telephone line can make local and long-distance calls according to their service provider’s rules and pricing, as established under CPUC official rulings on area codes and general tariff guidelines.

Cities in 424 Area Code
  • Los Angeles
  • Torrance
  • Compton
  • Santa Monica
  • Carson
  • Inglewood
  • Hawthorne
  • Redondo Beach
  • Lynwood
  • Gardena
  • Rancho Palos Verdes
  • Culver City
  • Manhattan Beach
  • Beverly Hills
  • Lawndale
  • Willowbrook
  • Lennox
  • West Carson
  • Lomita
  • Hermosa Beach
  • El Segundo
  • West Hollywood
  • East Rancho Dominguez
  • Palos Verdes Estates
  • Malibu
  • Del Aire
  • Marina del Rey
  • Alondra Park
  • Rolling Hills Estates
  • Topanga
  • West Rancho Dominguez
  • Ladera Heights
  • Avalon
  • Rolling Hills
Counties in 424 Area Code
  • Los Angeles
  • Ventura
  • Santa Barbara
Prefix Codes for Area Code 424
  • (424) 200
  • (424) 201
  • (424) 202
  • (424) 203
  • (424) 204
  • (424) 205
  • (424) 206
  • (424) 207
  • (424) 208
  • (424) 209
  • (424) 210
  • (424) 212
  • (424) 213
  • (424) 214
  • (424) 215
  • (424) 216
  • (424) 217
  • (424) 218
  • (424) 219
  • (424) 220
  • (424) 221
  • (424) 222
  • (424) 223
  • (424) 224
  • (424) 225
  • (424) 226
  • (424) 227
  • (424) 228
  • (424) 229
  • (424) 230
  • (424) 231
  • (424) 232
  • (424) 233
  • (424) 234
  • (424) 235
  • (424) 236
  • (424) 237
  • (424) 238
  • (424) 239
  • (424) 240
California Area Codes
  • 209
  • 213
  • 279
  • 310
  • 323
  • 341
  • 350
  • 369
  • 408
  • 415
  • 424
  • 442
  • 510
  • 530
  • 559
  • 562
  • 619
  • 626
  • 628
  • 650
  • 657
  • 661
  • 669
  • 707
  • 714
  • 747
  • 760
  • 805
  • 818
  • 820
  • 831
  • 840
  • 858
  • 909
  • 916
  • 925
  • 949
  • 951
California Phone Numbers
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