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Area code 820

Area code 820 covers Camarillo, California. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: California Major City: Camarillo Pacific Time (PT) Overlay: 805/820
01 / WHERE IT IS

Where is area code 820?

Area code 820 is assigned to Camarillo and the surrounding region in California. Calls to numbers that start with 820 are routed to this area.

Area code 820 shares its territory with 805. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Ventura CountySanta Barbara CountySan Luis Obispo CountyMonterey County

Line types

  • Mobile 36.36%
  • Landline 63.64%
02 / MAP

Area code 820 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Camarillo

This area code is in the Pacific Time (PT) time zone.

Local timeCamarillo, CA--:--:--

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America/Los_AngelesLive
04 / HOW TO DIAL

How to call Camarillo

WITHIN THE US820 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 820 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 820 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 820 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 820 555 0123
🇦🇺Australia0011 1 820 555 0123
🇯🇵Japan010 1 820 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 820

Share of the number blocks by carrier and line type.

Landline

Fractel
57%
Sinch
16%
Commio
5%
Twilio
4%
CoreTel Communications
4%
Others
14%

Mobile

AT&T Mobility
47%
T-MOBILE USA
22%
Verizon Wireless
12%
Boost Mobile
6%
Sinch
6%
Others
6%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 820

88 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(820) 200 Landline Thousand Oaks ADVANCED TELECOM SOLUTIONSADVANCED TELECOM SOLUTIONS, LLC
(820) 201 Mobile Oxnard Shelcomm
(820) 202 Mobile San Luis Obispo OptimumCSC WIRELESS, LLC
(820) 203 Mobile Atascadero T-MOBILE USAT-MOBILE USA, INC.
(820) 204 Mobile Camarillo AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC
(820) 205 Mobile Newbury Park AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC
(820) 206 Mobile Paso Robles T-MOBILE USAT-MOBILE USA, INC.
(820) 207 Mobile Camarillo AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC
(820) 208 Landline Atascadero TPx CommunicationsU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS
(820) 209 Landline Gaviota BandwidthBANDWIDTH.COM CLEC, LLC - CA

Showing 10 of 88 prefixes

07 / FAQ

Frequently asked questions about area code 820

Where is area code 820 used?
Area code 820 serves Camarillo and the surrounding area in California, including Ventura County, Santa Barbara County, San Luis Obispo County, Monterey County.
What city is area code 820 from?
The main city of area code 820 is Camarillo, CA.
What time zone is area code 820 in?
Area code 820 is in the Pacific Time (PT) time zone (America/Los_Angeles).
Is 820 an overlay area code?
Yes. It shares its territory with 805. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 820 from the United States?
Dial the 10 digits: 820 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 820 number from another country?
Dial your country's exit code (or +), then 1, then 820 and the seven-digit number. From a mobile you can use +1 820 XXX XXXX.
Which carriers use area code 820?
Most landline blocks belong to Fractel and most mobile blocks to AT&T Mobility. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 820 for landlines, mobiles or both?
Both. About 63.64% of the number blocks are landline, 36.36% mobile.
How do I save a 820 number in WhatsApp or my phone?
Save it in international format: +1 820 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 820?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

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Other area codes in California

209 · Modesto213 · Los Angeles310 · Compton: Gardena DA323 · Los Angeles341 · Fremont-Newark: Main DA350 · Modesto369 · Santa Rosa408 · San Jose: West DA415 · San Francisco: Central DA424 · Beverly Hills442 · Victorville: Victorville DA510 · Oakland: Main-Piedmont DA530 · Chico559 · Fresno562 · Long Beach619 · San Diego: San Diego DA626 · Alhambra628 · San Francisco: Central DA650 · Palo Alto657 · Anaheim661 · Bakersfield: Main DA669 · San Jose: West DA707 · Santa Rosa714 · Anaheim747 · Burbank: Burbank DA760 · Palm Springs805 · Santa Barbara818 · Van Nuys831 · Salinas840 · Pomona858 · La Jolla909 · Ontario916 · Sacramento: Main DA925 · Walnut Creek949 · Irvine951 · Riverside

View all California area codes →