Area code 831


Area code 831 is a telephone area code in the North American Numbering Plan for a small region of the U.S. state of California. The numbering plan area comprises Monterey County, San Benito County, and Santa Cruz County. The area code was created on July 11, 1998 in a split from area code 408.

Service area

The service area of NPA 831 includes Big Sur, Monterey Bay, the Salinas Valley, and the southwestern Santa Cruz Mountains.
Major cities in the area are Salinas, Hollister, Monterey, Santa Cruz and places in the northern Central Coast.

Monterey County