Area Code 820 at a Glance
| Area code | 820 |
| Region | California |
| Country | United States |
| Primary timezone | America/Los_Angeles |
| Dialing format | +1 (820) NXX-XXXX |
Frequently Asked Questions
Where is area code 820?
Area code 820 serves California, United States.
Who is calling me from area code 820?
A call from area code 820 most likely originates from California, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 820 number?
Within North America: dial 1-820 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 820 and the number.