820 Area Code

Area code 820 is in California (CA), USA and some of its main locations are Oxnard, Ventura, Santa Maria, etc. (jump to city list below).

Area code 820 has been in service since June 30, 2018 and is an overlay code part of overlay complex 805/820 (overlaying area codes cover the same geographic area).

11:55:20 PM is the current time in area code 820 (Pacific Time Zone).

Reverse phone lookup


Map of area code 820

More California area codes


820 phone number location

NPANXX Area served1 Date2
820-200 Thousand Oaks 6/25/2018
820-201 Oxnard 7/31/2018
820-202 San Luis Obispo 2/13/2020
820-203 Atascadero 3/11/2021
820-204 Camarillo 7/1/2021
820-205 Newbury Park 7/1/2021
820-206 Paso Robles 7/16/2021
820-207 Camarillo 7/29/2021
820-208 Atascadero 6/29/2022
820-209 Gaviota 2/16/2022
820-212 Ventura East 6/1/2022
820-222 Camarillo 1/23/2019
820-234 Oxnard 9/17/2020
820-280 Los Alamos 10/2/2019
820-288 Ventura East 1/27/2021
820-299 Camarillo 1/27/2021
820-300 Guadalupe 1/15/2019
820-333 Thousand Oaks 1/23/2019
820-336 Guadalupe 3/12/2021
820-345 El Rio 7/2/2020
820-346 Arroyo Grande 11/16/2020
820-348 Oxnard 1/11/2021
820-356 Point Mugu 1/13/2021
820-380 Pismo Beach 11/18/2022
820-386 Simi Valley 5/31/2022
820-400 Parkfield 1/15/2019
820-426 Camarillo 2/18/2022
820-432 Newbury Park 8/5/2021
820-444 Newbury Park 1/25/2019
820-465 Oxnard 7/10/2020
820-500 Gaviota 12/5/2019
820-529 Piru 12/17/2019
820-587 Santa Barbara 8/23/2021
820-600 Pismo Beach 12/5/2019
820-666 San Luis Obispo 1/24/2019
820-667 Oxnard 8/5/2021
820-732 Ventura Central 7/10/2020
820-758 Santa Barbara 7/10/2020
820-777 Santa Paula 1/22/2019
820-786 Atascadero 8/5/2021
820-799 Camarillo 2/23/2022
820-800 Cayucos 12/5/2019
820-822 Oxnard 9/22/2021
820-837 Oxnard 1/10/2022
820-842 Oakview 11/4/2020
820-888 Simi Valley 12/24/2018
820-899 Santa Maria 1/13/2021
820-900 Bradley 12/5/2019
820-946 Santa Maria 7/10/2020
820-999 Oxnard 1/22/2019
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. Assignment date.
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Cities in area code 820

City1 County Time2
Arroyo Grande San Luis Obispo P
Atascadero San Luis Obispo P
Avila Beach San Luis Obispo P
Bradley Monterey P
Brandeis Ventura P
Buellton Santa Barbara P
Camarillo Ventura P
Cambria San Luis Obispo P
Carpinteria Santa Barbara P
Casmalia Santa Barbara P
Cayucos San Luis Obispo P
Creston San Luis Obispo P
Fillmore Ventura P
Goleta Santa Barbara P
Grover Beach San Luis Obispo P
Guadalupe Santa Barbara P
Harmony San Luis Obispo P
Lompoc Santa Barbara P
Los Alamos Santa Barbara P
Los Olivos Santa Barbara P
Los Osos San Luis Obispo P
Moorpark Ventura P
Morro Bay San Luis Obispo P
Newbury Park Ventura P
Nipomo San Luis Obispo P
Oak Park Ventura P
Oak View Ventura P
Oceano San Luis Obispo P
Ojai Ventura P
Oxnard Ventura P
Paso Robles San Luis Obispo P
Piru Ventura P
Pismo Beach San Luis Obispo P
Point Mugu Nawc Ventura P
Port Hueneme Ventura P
Port Hueneme Cbc Base Ventura P
San Luis Obispo San Luis Obispo P
San Miguel San Luis Obispo P
San Simeon San Luis Obispo P
Santa Barbara Santa Barbara P
Santa Margarita San Luis Obispo P
Santa Maria Santa Barbara P
Santa Paula Ventura P
Santa Ynez Santa Barbara P
Shandon San Luis Obispo P
Simi Valley Ventura P
Solvang Santa Barbara P
Somis Ventura P
Summerland Santa Barbara P
Templeton San Luis Obispo P
Thousand Oaks Ventura P
Ventura Ventura P
Westlake Village Ventura P
  1. Listed above are most places served by area code 820. When multiple places in a state/province share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. P stands for Pacific Time Zone (currently 11:55:20 PM).
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