Area code 831
Area code 831 is a telephone area code in the North American Numbering Plan. It serves California, the United States.
- 831area code
- CACalifornia
- UScountry
- 11-Jul-98in service
How to dial a 831 number
From within the United States and Canada, dial 1, then 831, then the seven-digit number. From another country, dial your international access code, then +1 831 and the seven-digit number.
Area code 831 covers the same territory as 408. When several area codes share one area like this, it is called an overlay.
Other area codes in California
209, 213, 279, 310, 323, 341, 350, 357, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 738, 747, 760, 805, 818, 820, 837, 840, 858, 909, 916, 925, 949, 951
Frequently asked questions
Where is area code 831?
Area code 831 serves California, the United States.
What is the country code for a 831 number?
Numbers with North American area codes use the country calling code +1.