820 Phone Number Lookup | California Area Code

Look up any phone number starting with 820 to identify the owner name, address, spam reports, and more. The 820 area code is a telephone area code serving the same region as area code 805 in California.

Look Up an 820 Phone Number

Enter a full 10-digit number to identify the caller and whether it has been reported as spam.

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Where Is Area Code 820 Located?

Phone numbers with the 820 area code originate from central California, specifically within the same geographic region as area code 805.

Counties Served:

  • San Luis Obispo
  • Santa Barbara
  • Ventura
  • Monterey

Major Cities:

  • Fillmore
  • Port Hueneme
  • Santa Paula
  • Moorpark
  • Pismo Beach

Other Cities and Towns:

  • Arroyo Grande
  • Atascadero
  • Avila Beach
  • Ballard
  • Bardsdale
  • Baywood-Los Osos
  • Bradley
  • Bryson
  • Buellton
  • Buckhorn
  • California Valley
  • Cambria
  • Camarillo
  • Carpinteria
  • Casa Conejo
  • Casmalia
  • Cayucos
  • Channel Islands Beach
  • Cholame
  • El Rio
  • Fillmore
  • Garey
  • Gaviota
  • Goleta
  • Gorda
  • Grover Beach
  • Guadalupe
  • Halcyon
  • Harmony
  • Hope Ranch
  • Isla Vista
  • La Conchita
  • Lake Nacimiento
  • Lake Sherwood
  • Lompoc
  • Los Alamos
  • Los Olivos
  • Los Osos
  • Meiners Oaks
  • Mira Monte
  • Mission Canyon
  • Mission Hills
  • Montalvo
  • Montecito
  • Moorpark
  • Morro Bay
  • Newbury Park
  • Nipomo
  • Oak View
  • Oceano
  • Ojai
  • Orcutt
  • Oxnard
  • Parkfield
  • Paso Robles
  • Piru
  • Pismo Beach
  • Point Mugu
  • Port Hueneme
  • Pozo
  • San Luis Obispo
  • San Miguel
  • San Simeon
  • Santa Barbara
  • Santa Margarita
  • Santa Maria
  • Santa Paula
  • Santa Ynez
  • Saticoy
  • Shandon
  • Simi Valley
  • Sisquoc
  • Solvang
  • Somis
  • Summerland
  • Templeton
  • Thousand Oaks
  • Toro Canyon
  • Vandenberg SFB
  • Vandenberg Village
  • Ventucopa
  • Ventura

Overlay System

Area code 820 is an overlay to area code 805 , meaning they serve the same geographic region. Area code 805 was created in 1957. Area code 820 was introduced in June 2018. Ten-digit dialing is required for all calls.

Area Code 820 Location Map

Area Code 820 Location on California Map

Area code 820 is a general purpose code which was placed in service on June 30, 2018.

Phone Number Prefixes and Carriers

Our California phone number lookup for the 820 area code analyzes the three-digit prefix to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, California geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

  • NPA- area code (where the number was originally assigned)
  • NXX - Central office code that locates the specific neighborhood and identifies the service provider
  • XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company Number of Prefixes

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center Number of Prefixes

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