Area codes 805 and 820 are California telephone area codes; 805 was originally split from area code 213 in 1957. They include most or all of the California counties of San Luis Obispo, Santa Barbara, Ventura, plus the southernmost portions of Monterey County.
Area code 805 also serves the US military facilities in Kwajalein, Republic of the Marshall Islands with a Paso Robles prefix (805-355-xxxx). This arrangement originated from the US Army's first satellite communications station having been built at nearby Camp Roberts.
In August 2016, the California Public Utilities Commission held a series of hearings regarding the potential need to provide a relief area code for 805 in the form of an overlay or a split. On May 25, 2017, the Commission approved 820 as an overlay area code. New telephone numbers of 820 area code began service in June 2018, requiring ten-digit dialing for all calls.
San Luis Obispo County
Santa Barbara County
- Hope Ranch
- Isla Vista
- Los Alamos
- Los Olivos
- Mission Canyon
- Mission Hills
- New Cuyama
- Santa Barbara
- Santa Maria
- Santa Ynez
- Toro Canyon
- Vandenberg AFB
- Vandenberg Village
- List of California area codes
- List of North American Numbering Plan area codes
- North American Numbering Plan
- "805 Area Code". California PUC. Retrieved 2017-04-02.
- "DECISION GRANTING REQUEST FOR AN ALL-SERVICE AREA CODE OVERLAY IN THE 805 NUMBERING PLAN AREA". cpuc.ca.gov. May 25, 2017. Retrieved 2017-05-25.
- Kisken, Tom (May 28, 2018). "New area code changes the way people dial in the 805 as of Saturday". Ventura County Star. Retrieved 29 May 2018.
|North: 661, 831|
|West: Pacific Ocean, 808||area code 805/820||East: 559, 661, 747/818|
|South: 310/424, Pacific Ocean|
|Hawaii area codes: 808|