820 Area Code

Oxnard, California

Oxnard, California is the largest city covered by the 820 Area Code

Current Time

Pacific Time Zone

Share 820 Area Code

820 Area Code Overview & Map

The 820 area code is an overlay for area code 805 and serves the same area in California, United States. It covers cities such as Oxnard, Simi Valley, Thousand Oaks, San Buenaventura (Ventura), and Santa Maria.

When was the 820 Area Code created?

The 820 area code was first put into service in 2018, by the North American Numbering Plan Administration (NANPA). Learn more about the US Area Code System

History

The 820 area code was created from the 805 area code, to meet the growing demand for new telephone numbers in California.

Where is the 820 Area Code located?

The 820 area code serves Oxnard, California and the surrounding areas.

Overlays

The 820 is an overlay for the 805 area code(s), and serves the same area. Learn about overlays

820 Area Code Map

820 Area Code Map

Cities in the 820 Area Code

The 820 area code includes 79 cites in California.

City Population % in Area Code
Oxnard, CA 197,899 100%
Thousand Oaks, CA 126,683 95%
Simi Valley, CA 124,237 99%
San Buenaventura (Ventura), CA 106,433 100%
Santa Maria, CA 99,553 100%
Santa Barbara, CA 88,410 100%
Camarillo, CA 65,201 100%
San Luis Obispo, CA 45,119 100%
Lompoc, CA 42,434 100%
Moorpark, CA 34,421 100%
Goleta, CA 29,888 100%
El Paso de Robles (Paso Robles), CA 29,793 100%
Santa Paula, CA 29,321 100%
Orcutt, CA 28,905 100%
Atascadero, CA 28,310 100%
Isla Vista, CA 23,096 100%
Port Hueneme, CA 21,723 100%
Arroyo Grande, CA 17,252 100%
Nipomo, CA 16,714 100%
Fillmore, CA 15,002 100%
Los Osos, CA 14,276 100%
Grover Beach, CA 13,156 100%
Carpinteria, CA 13,040 100%
Morro Bay, CA 10,234 100%
Montecito, CA 8,965 100%
Templeton, CA 7,674 100%
Pismo Beach, CA 7,655 100%
Ojai, CA 7,461 100%
Oceano, CA 7,286 100%
El Rio, CA 7,198 100%
Guadalupe, CA 7,080 100%
Mira Monte, CA 6,854 100%
Vandenberg Village, CA 6,497 100%
Cambria, CA 6,032 100%
Solvang, CA 5,245 100%
Buellton, CA 4,828 100%
Santa Ynez, CA 4,418 100%
Oak View, CA 4,066 100%
Mission Hills, CA 3,576 100%
Meiners Oaks, CA 3,571 100%
Vandenberg AFB, CA 3,338 100%
Santa Rosa Valley, CA 3,334 100%
Casa Conejo, CA 3,249 100%
Channel Islands Beach, CA 3,103 100%
Cayucos, CA 2,592 100%
Lake Nacimiento, CA 2,411 100%
Mission Canyon, CA 2,381 100%
San Miguel, CA 2,336 100%
Piru, CA 2,063 100%
Los Alamos, CA 1,890 100%
Avilla Beach, CA 1,627 100%
Lake Sherwood, CA 1,527 100%
Toro Canyon, CA 1,508 100%
Los Ranchos, CA 1,477 100%
Summerland, CA 1,448 100%
Shandon, CA 1,295 100%
Callender, CA 1,262 100%
Santa Margarita, CA 1,259 100%
Los Olivos, CA 1,132 100%
Santa Susana, CA 1,037 100%
Saticoy, CA 1,029 100%
Blacklake, CA 930 100%
Los Berros, CA 641 100%
Woodlands, CA 576 100%
San Ardo, CA 517 100%
New Cuyama, CA 517 100%
Ballard, CA 467 100%
San Simeon, CA 462 100%
Garden Farms, CA 386 100%
Lockwood, CA 379 100%
Oak Shores, CA 337 100%
Whitley Gardens, CA 285 100%
Edna, CA 193 100%
Sisquoc, CA 183 100%
Casmalia, CA 138 100%
Creston, CA 94 100%
Bradley, CA 93 100%
Garey, CA 68 100%
Cuyama, CA 57 100%

820 Area Code NXX Prefixes

The 820 Area Code (NPA Code) has 51 prefixes (NXX Code). An NXX prefix, also known as a central office code or exchange code, is the three-digit code that follows the area code in a North American telephone number. Learn about NXX Prefixes

Area Code Prefix Usage Carrier Rate Center
820 200 Landline Advanced Telecom Solutions, LLC Thousand Oaks
820 201 Landline Shelcomm Oxnard
820 202 Wireless Csc Wireless, LLC San Luis Obispo
820 203 Landline T-Mobile USA, Inc. Atascadero
820 204 Wireless New Cingular Wireless Pcs, LLC Camarillo
820 205 Wireless New Cingular Wireless Pcs, LLC Newbury Park
820 206 Landline T-Mobile USA, Inc. El Paso de Robles (Paso Robles)
820 207 Wireless New Cingular Wireless Pcs, LLC Camarillo
820 208 Landline U.s. Telepacific Corp. DBA Tpx Communications Atascadero
820 209 Landline Bandwidth.com Clec, LLC - Ca Gaviota
820 212 Wireless New Cingular Wireless Pcs, LLC Ventura
820 222 Landline Fractel, LLC Camarillo
820 234 Landline Fractel, LLC Oxnard
820 280 Landline Hd Carrier LLC Los Alamos
820 288 Landline Fractel, LLC Ventura
820 299 Landline Fractel, LLC Camarillo
820 300 Landline Onvoy, LLC - Ca Guadalupe
820 333 Landline Fractel, LLC Thousand Oaks
820 336 Landline Fractel, LLC Guadalupe
820 345 Landline Fractel, LLC El Rio
820 346 Landline Fractel, LLC Arroyo Grande
820 348 Landline Fractel, LLC Oxnard
820 356 Landline Fractel, LLC Point Mugu
820 380 Landline Onvoy, LLC - Ca Pismo Beach
820 386 Landline Fractel, LLC Simi Valley
820 400 Landline Twilio International, Inc. Parkfield
820 426 Landline Ton80 Communications, LLC Camarillo
820 432 Landline Fractel, LLC Newbury Park
820 444 Landline Fractel, LLC Newbury Park
820 465 Landline Fractel, LLC Oxnard
820 500 Landline Fractel, LLC Gaviota
820 529 Landline Fractel, LLC Piru
820 587 Landline Fractel, LLC Santa Barbara
820 600 Landline Fractel, LLC Hesperia
820 666 Landline Fractel, LLC San Luis Obispo
820 667 Landline Fractel, LLC Oxnard
820 732 Landline Fractel, LLC Ventura
820 758 Landline Fractel, LLC Santa Barbara
820 777 Landline Fractel, LLC Santa Paula
820 786 Landline Fractel, LLC Atascadero
820 799 Landline Fractel, LLC Camarillo
820 800 Landline Fractel, LLC Cayucos
820 822 Landline Fractel, LLC Oxnard
820 823 Landline Onvoy, LLC - Ca Santa Ynez
820 837 Landline Ton80 Communications, LLC Oxnard
820 842 Landline Fractel, LLC Oakview
820 888 Landline Terra Nova Telecom Inc. Simi Valley
820 899 Landline Fractel, LLC Santa Maria
820 900 Landline Fractel, LLC Bradley
820 946 Landline Fractel, LLC Santa Maria
820 999 Landline Fractel, LLC Oxnard