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Where Is 657 Area Code?

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Database Updated: July 22, 2025
California Phone Number Lookups
Where Is 657 Area Code?

Where is Area Code 657?

Area code 657 primarily serves portions of Southern California, covering regions in Orange County. It encompasses both highly populated and suburban areas, including notable cities such as Anaheim, Santa Ana, and Fullerton. Additionally, certain parts of Los Angeles County and bordering communities may fall under this overlay. This coverage was introduced to support increased demand for telephone numbers due to the expanding residential, commercial, and technological landscape.

Key municipalities within area code 657 often have robust public services and local government offices, providing essential support for residents and businesses. For more information on regulatory measures related to telephone services, consult the California Public Utilities Commission resources. The California Public Utilities Commission has its main office at 505 Van Ness Avenue, San Francisco, CA 94102.

Examples of notable cities and regions include:

  • Anaheim
  • Santa Ana
  • Fullerton
  • Huntington Beach
  • Adjacent areas of Los Angeles County

What time zone is 657 area code in the USA?

The 657 area code lies in the Pacific Time Zone. This zone operates under Pacific Standard Time (PST) during the winter months (UTC-8). When Daylight Saving Time (DST) takes effect, the time switches to Pacific Daylight Time (PDT), moving forward one hour to UTC-7.

Although local city governments set forth guidelines on operational hours for public facilities, most businesses, agencies, and service providers align with these standard time shifts. If you need confirmation about the time zone and official timekeeping policies, consult the National Institute of Standards and Technology guidance regarding time standards.

History of the 657 Area Code

Area code 657 was introduced as an overlay in 2008 to supplement the existing 714 area code in Orange County. Both codes now function together to meet the demand for new subscribers in a region experiencing steady population growth and a surge in business development.

Here is a brief timeline outlining the origins and development of this area code:

  • 1951: The 714 area code was established, serving much of Southern California.
  • 1982: Significant changes were made to accommodate ongoing population shifts.
  • 2008: To manage high demand for local telephone numbers, authorities implemented the 657 overlay alongside 714.

These shifts typically occur when an area’s existing numbers approach exhaustion. Policy and regulatory oversight come from state commissions and federal bodies, including the FCC official guidelines. The Federal Communications Commission’s main office is located at 45 L Street NE, Washington, DC 20554.

How Many People Use the 657 Area Code?

The 657 area code covers a substantial portion of Orange County and select adjacent regions. Based on recent estimates, the population in areas currently served by 657 numbers crosses over a million. While not every household maintains a landline, mobile and VoIP usage also adds to the assigned number count.

The California Public Utilities Commission regularly reviews the utilization and demand for all area codes in the state. The following factors generally affect how many numbers are assigned:

  • Residential growth and new housing development
  • Expansion of commercial properties
  • Rise of secondary lines for home offices and personal devices
  • Increased usage of dedicated data lines and internet-based phone services

For specific statistics, refer to the California Public Utilities Commission reports offered at their head office located at 505 Van Ness Avenue, San Francisco, CA 94102.

Is the 657 Area Code Toll-Free?

The 657 area code is not toll-free. It functions as a geographic code covering specific areas of Southern California. Calls made from or to this code may incur standard local or long-distance charges, depending on the caller’s telephone plan. Here are a few important points regarding toll-free considerations:

  • Area code 657 is designated to serve local communities and businesses within its geographic scope.
  • Toll-free codes in the United States typically start with 800, 888, 877, 866, 855, 844, or 833.
  • Users are advised to verify any calling rates with their service provider, as regulations and fees can vary.

For general oversight on any toll-free guidelines or questions about assigned area codes, consult the FCC consumer information site or visit their office at 45 L Street NE, Washington, DC 20554.


 

Cities in 657 Area Code
  • Anaheim
  • Santa Ana
  • Huntington Beach
  • Garden Grove
  • Orange
  • Fullerton
  • Westminster
  • Buena Park
  • Costa Mesa
  • Yorba Linda
  • Tustin
  • Fountain Valley
  • Placentia
  • Cypress
  • Irvine
  • Stanton
  • Brea
  • North Tustin
  • La Mirada
  • La Palma
  • La Habra
  • Midway City
  • Villa Park
  • Seal Beach
  • Los Alamitos
Counties in 657 Area Code
  • Orange
Prefix Codes for Area Code 657
  • (657) 200
  • (657) 201
  • (657) 202
  • (657) 203
  • (657) 204
  • (657) 205
  • (657) 206
  • (657) 207
  • (657) 208
  • (657) 210
  • (657) 212
  • (657) 214
  • (657) 215
  • (657) 216
  • (657) 217
  • (657) 218
  • (657) 220
  • (657) 221
  • (657) 222
  • (657) 223
  • (657) 224
  • (657) 225
  • (657) 226
  • (657) 227
  • (657) 228
  • (657) 229
  • (657) 231
  • (657) 232
  • (657) 233
  • (657) 234
  • (657) 235
  • (657) 236
  • (657) 237
  • (657) 238
  • (657) 241
  • (657) 242
  • (657) 243
  • (657) 245
  • (657) 251
  • (657) 269
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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