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Area Code 831

Where does the 831 area code belong?

STATE
California
TIME ZONE
Pacific Time
MAJOR CITY
Santa Cruz

The 831 Area Code (or Area Code 831) is located in the state of CA. Area Code 831 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 723 thousand unique phone numbers and 1.88 million individuals near the city of Monterey

Area Code 831 History

Area code 831 was put into service. Area code 831 was created from a split of area code 408.

Following cities also use area code 831:

Aptos, Aromas, Ben Lomond, Big Sur, Boulder Creek, Cantua Creek, Carmel, Carmel Valley, Castroville, Chualar, Felton, Gonzales, Greenfield, Hollister, King City, Marina, Monterey, Salinas, San Ardo, San Juan Bautista, Santa Cruz, Soledad, Tres Pinos, Watsonville.

ZIP codes in Area Code 831:

90001 (Los Angeles)
90002 (Los Angeles)
90003 (Los Angeles)
90004 (Los Angeles)
90005 (Los Angeles)
90006 (Los Angeles)
90007 (Los Angeles)
90008 (Los Angeles)
90009 (Los Angeles)
90010 (Los Angeles)

Big city in area code 831

Salinas

COUNTY
Monterey
POPULATION
187,314
Santa Cruz

COUNTY
Santa cruz
POPULATION
99,537
Watsonville

COUNTY
Santa cruz
POPULATION
84,013
Hollister

COUNTY
San benito
POPULATION
50,268
Source: WorldAtlas.com
NUMBER OF PREFIXES
361
NUMBER OF CELLPHONES
167,324
NUMBER OF LAND LINES
407,273
MEDIAN HOME VALUE
$78.5K
MEDIAN INCOME
$59.9K
Source: WorldAtlas.com

Browse Area Code (831) Prefixes

PREFIX COUNTY CITY CARRIER TYPE
831-462 Santa Cruz Santa Cruz Pacific Bell Landline
831-464 Santa Cruz Santa Cruz Pacific Bell Landline
831-465 Santa Cruz Santa Cruz Pacific Bell Landline
831-466 Santa Cruz Santa Cruz Pacific Bell Landline
831-469 Santa Cruz Santa Cruz Pacific Bell Landline
831-471 Santa Cruz Santa Cruz Pacific Bell Landline
831-475 Santa Cruz Santa Cruz Pacific Bell Landline
831-476 Santa Cruz Santa Cruz Pacific Bell Landline
831-477 Santa Cruz Santa Cruz Pacific Bell Landline
831-479 Santa Cruz Santa Cruz Pacific Bell Landline
831-480 Alameda Oakland Matrix Telecom, Llc. Sii Tnci - CA Landline
831-484 Monterey Salinas Pacific Bell Landline
831-498 San Francisco San Francisco O1 Communications, Inc. - CA Landline
831-502 Santa Cruz Santa Cruz Pacific Bell Landline
831-508 San Francisco San Francisco O1 Communications, Inc. - CA Landline
831-512 Monterey Salinas Sprint Spectrum L.p. Landline
831-515 Santa Clara San Jose Mpower Communications Corp - CA Landline
831-520 Monterey Salinas American Messaging Services, Llc Wireless
831-521 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-524 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-525 Monterey Salinas Level 3 Communications, Llc - CA Landline
831-531 Alameda Fremont Xo California, Inc. Landline
831-532 Alameda Fremont Xo California, Inc. Landline
831-533 Alameda Fremont Xo California, Inc. Landline
831-534 Alameda Fremont Xo California, Inc. Landline
831-535 Alameda Fremont Xo California, Inc. Landline
831-536 Alameda Fremont Xo California, Inc. Landline
831-537 Monterey Salinas Cellco Partnership Dba Verizon Wireless - CA Landline
831-539 Santa Clara Santa Clara Sprint Spectrum L.p. Wireless
831-540 Monterey Salinas O1 Communications, Inc. - CA Landline
831-560 Alameda Oakland American Messaging Services, Llc Wireless
831-566 Santa Clara Sunnyvale Cellco Partnership Dba Verizon Wireless - CA Wireless
831-572 Alameda Oakland Utility Telecom Group, Llc - CA Wireless
831-574 Monterey Salinas U.s. Telepacific Corp. - CA Landline
831-576 Alameda Oakland Matrix Telecom, Llc. Sii Tnci - CA Landline
831-578 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-580 Monterey Salinas O1 Communications, Inc. - CA Landline
831-582 Monterey Marina Pacific Bell Landline
831-583 Monterey Seaside Pacific Bell Landline
831-585 Monterey Salinas Sprint Spectrum L.p. Landline
831-586 Monterey Salinas O1 Communications, Inc. - CA Landline
831-588 Santa Clara Sunnyvale Cellco Partnership Dba Verizon Wireless - CA Wireless
831-593 Monterey Salinas Charter Fiberlink Ca-Cco, Llc - CA Landline
831-594 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-595 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-596 Monterey Salinas New Cingular Wireless Pcs, Llc Wireless
831-597 Monterey Salinas Peerless Network Of California, Llc - CA Landline
831-598 Monterey Salinas American Messaging Services, Llc Wireless
831-600 Santa Clara San Jose U.s. Telepacific Corp. - CA Landline
831-601 Monterey Salinas Cellco Partnership Dba Verizon Wireless - CA Wireless
831-603 Alameda Oakland Matrix Telecom, Llc. Sii Tnci - CA Landline
831-604 Alameda Oakland Matrix Telecom, Llc. Sii Tnci - CA Landline
831-607 San Francisco San Francisco O1 Communications, Inc. - CA Landline
831-609 San Francisco San Francisco O1 Communications, Inc. - CA Landline
831-610 San Francisco San Francisco O1 Communications, Inc. - CA Landline
831-612 San Francisco San Francisco Broadwing Communications, Llc - CA Landline
831-613 Monterey Salinas Bandwidth.com Clec, Llc - CA Landline
831-618 Alameda Oakland Matrix Telecom, Llc. Sii Tnci - CA Landline
831-620 Monterey Carmel Pacific Bell Landline
831-621 San Francisco San Francisco Broadwing Communications, Llc - CA Landline
831-622 Monterey Carmel Pacific Bell Landline
831-623 San Benito San Juan Bautista Pacific Bell Landline
831-624 Monterey Carmel Pacific Bell Landline
831-625 Monterey Carmel Pacific Bell Landline
831-626 Monterey Carmel Pacific Bell Landline
831-627 Monterey San Ardo Pacific Bell Landline
831-628 San Benito Tres Pinos Pacific Bell Landline
831-630 San Benito Hollister Pacific Bell Landline
831-632 Monterey Castroville Pacific Bell Landline
831-633 Monterey Castroville Pacific Bell Landline
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Phone Numbers Starting With (831) Area Code

Phone Number
831-229-4700		 USAGE
Wireless		 City
Salinas		 Operate
Read more about who called from 8312294700		 Update Time
Mar-26-2026
Phone Number
831-215-8010		 USAGE
Wireless		 City
Salinas		 Operate
Read more about who called from 8312158010		 Update Time
Mar-26-2026
Phone Number
831-257-6888		 USAGE
Wireless		 City
Salinas		 Operate
Read more about who called from 8312576888		 Update Time
Mar-26-2026
Phone Number
831-461-3073		 USAGE
Landline		 City
Scotts Valley		 Operate
Read more about who called from 8314613073		 Update Time
Mar-26-2026
Phone Number
831-219-2171		 USAGE
Landline		 City
San Jose		 Operate
Read more about who called from 8312192171		 Update Time
Mar-26-2026
Phone Number
831-744-8459		 USAGE
Landline		 City
Salinas		 Operate
Read more about who called from 8317448459		 Update Time
Mar-26-2026
Phone Number
831-741-6312		 USAGE
Landline		 City
Salinas		 Operate
Read more about who called from 8317416312		 Update Time
Mar-26-2026
Phone Number
831-230-6487		 USAGE
Landline		 City
Salinas		 Operate
Read more about who called from 8312306487		 Update Time
Mar-26-2026
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