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  5. Area Code 831

Where Is Area Code 831?

Area code 831 is found in the US state of California. Primarily servicing the city of Salinas (population: 187314), area code 831 covers 3 counties of California.

Located in the Pacific time zone, area code 831 is on the same time as Los Angeles, CA.

Area code 831 was brought into effect on July 11, 1998. 831 was split from the parent 408 area code.

Map of California with area code 831 highlighted

Counties in Area Code 831

  • Monterey,
  • San Benito,
  • Santa Cruz.

Most Populous Cities in Area Code 831

City County City Population Time Zone
Salinas Monterey 187,314 PST
Santa Cruz Santa Cruz 99,537 PST
Watsonville Santa Cruz 84,013 PST
Hollister San Benito 50,268 PST
Seaside Monterey 34,299 PST
Monterey Monterey 32,512 PST
Soledad Monterey 27,843 PST
Aptos Santa Cruz 24,375 PST
Marina Monterey 23,037 PST
Greenfield Monterey 18,041 PST
King City Monterey 16,313 PST
Pacific Grove Monterey 15,470 PST
Scotts Valley Santa Cruz 14,995 PST
Carmel Monterey 12,413 PST
Castroville Monterey 10,611 PST
Soquel Santa Cruz 10,324 PST
Capitola Santa Cruz 9,290 PST
Boulder Creek Santa Cruz 9,129 PST
Gonzales Monterey 8,972 PST
Felton Santa Cruz 7,908 PST
Freedom Santa Cruz 7,856 PST
Carmel Valley Monterey 6,456 PST
Ben Lomond Santa Cruz 6,416 PST
Pebble Beach Monterey 4,636 PST
San Juan Bautista San Benito 4,164 PST

Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.

View all United States Area Codes.

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This page was last updated on July 3, 2015.