Area code 831

Numbering plan areas in California (blue) and border states. Area code 831 is shown in red.

Area code 831 is a telephone area code in the North American Numbering Plan (NANP) for a small region of the U.S. state of California. The numbering plan area (NPA) 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

• Aromas
• Boronda
• Carmel Highlands
• Carmel Valley Village
• Carmel-by-the-Sea
• Castroville
• Chualar
• Del Monte Forest
• Del Rey Oaks
• Elkhorn
• Gonzales
• Gorda
• Greenfield
• Jolon
• King City
• Las Lomas
• Lockwood
• Marina
• Monterey
• Moss Landing
• Pacific Grove
• Pajaro
• Pebble Beach
• Prunedale
• Salinas
• San Ardo
• San Lucas
• Sand City
• Seaside
• Soledad
• Spreckels

San Benito County

• Aromas
• Hollister
• New Idria
• Paicines
• Panoche
• Ridgemark
• San Juan Bautista
• Tres Pinos

Santa Cruz County

• Amesti
• Aptos Hills-Larkin Valley
• Aptos
• Ben Lomond
• Bonny Doon
• Boulder Creek
• Brookdale
• Capitola
• Corralitos
• Davenport
• Day Valley
• Felton
• Freedom
• Interlaken
• Live Oak
• Lompico
• Mount Hermon
• Opal Cliffs
• Pasatiempo
• Rio del Mar
• Santa Cruz
• Scotts Valley
• Soquel
• Summit
• Swanton
• Twin Lakes
• Watsonville

See also

• List of California area codes

External links

• NANPA area code map of California

California area codes: 209, 213/323, 279/916, 310/424, 341/510, 408/669, 415/628, 442/760, 530, 559, 562, 619/858, 626, 650, 657/714, 661, 707, 747/818, 805/820, 831, 840/909, 925, 949, 951

	North: 408/669, 650
West: Pacific Ocean, 808	area code 831	East: 209, 559
	South: 805
Hawaii area codes: 808