Area code 831
Area code 831 is a California telephone area code that was split from area code 408 on July 11, 1998.
It covers Monterey County San Benito County, and Santa Cruz County.
Regions include Big Sur, Monterey Bay, the Salinas Valley, and the southwestern Santa Cruz Mountains.
Major cities within Area code 831 include: Salinas, Hollister, Monterey, Santa Cruz and the northern Central Coast.
Coordinates: 36°54′N 121°48′W / 36.9°N 121.8°W
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