820 Area Code

Area Code 820 Map

Area code 820 generally covers Oxnard, Thousand Oaks, and San Luis Obispo in the U.S. State of California.

Top cities in area code 820

City Prefixes
Oxnard, CA19.4%
Thousand Oaks, CA6.5%
San Luis Obispo, CA6.5%
Camarillo, CA6.5%
Buellton, CA6.5%
Ventura, CA6.5%
Guadalupe, CA6.5%
Santa Maria, CA6.5%
Santa Paula, CA3.2%
Simi Valley, CA3.2%

Top telephone carriers in area code 820

Carrier Prefixes
Fractel77.4%
Onvoy6.5%
Advanced Telecom Solutions3.2%
Shelcomm3.2%
Csc Wireless3.2%
Hd Carrier3.2%
Terra Nova Telecom Inc.3.2%

Area code 820 has 31 prefixes

Prefix Primary City Usage
820-200Thousand OaksLandline
820-201OxnardWireless
820-202San Luis ObispoWireless
820-222CamarilloLandline
820-234OxnardLandline
820-280BuelltonLandline
820-288VenturaLandline
820-299CamarilloLandline
820-300GuadalupeLandline
820-333Thousand OaksLandline
820-336GuadalupeLandline
820-345OxnardLandline
820-346Arroyo GrandeLandline
820-348OxnardLandline
820-400San MiguelLandline
820-444Newbury ParkLandline
820-465OxnardLandline
820-500BuelltonLandline
820-529CastaicLandline
820-600Pismo BeachLandline
820-666San Luis ObispoLandline
820-732VenturaLandline
820-758Santa BarbaraLandline
820-777Santa PaulaLandline
820-800CayucosLandline
820-842Oak ViewLandline
820-888Simi ValleyLandline
820-899Santa MariaLandline
820-900BradleyLandline
820-946Santa MariaLandline
820-999OxnardLandline

Statistics for area code 820