Area code 831 covers part of Californiastate, covering most of Monterey, Santa Cruz, San Benito counties. It was started on Jan 01, 2000. This region follows US/Pacific + Daylight Savings timezone. Other popular area codes that belong to California state include 209, 213, 310, 323, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 747, 760, 805, 818, 858, 909, 916, 925, 949, 951.
Date Changed | Change Details |
May 20, 2014 | Area code 831-324 was introduced on Feb 22, 2008 and subscribers are operational from May 20, 2014. |
Jan 07, 2014 | Area code 831-316 was introduced on Dec 23, 2013 and subscribers are operational from Jan 07, 2014. |
Dec 16, 2013 | Area code 831-319 was introduced on Dec 04, 2013 and subscribers are operational from Dec 16, 2013. |
Oct 21, 2013 | Area code 831-313 was introduced on Oct 09, 2013 and subscribers are operational from Oct 21, 2013. |
Apr 04, 2013 | Area code 831-350 was introduced on May 11, 2006 and subscribers are operational from Apr 04, 2013. |
Mar 28, 2013 | Area code 831-359 subscribers are operational from Mar 28, 2013. |
Area Code | City | County | Population | Network Operator |
831-300 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-301 | Salinas | San Benito | 55,269 | Pac-West Telecomm Inc - CA |
831-302-0 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-303 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-304 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-305-0 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-306 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-307 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-308 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-309 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-311 | 388,313 | Non Emergency Police And Other Governmental Services | ||
831-313-3 | Salinas | San Benito | 55,269 | Cellco Partnership dba Verizon Wireless - CA |
831-313-0 | Salinas | San Benito | 55,269 | Charter Fiberlink CA-CCO LLC - CA |
831-316-6 | Fremont | Santa Cruz | 262,382 | XO California Inc |
831-316-8 | Oakland | Santa Cruz | 262,382 | MetroPCS Inc |
831-316-0 | San Francisco | Santa Cruz | 262,382 | Allegiance Telecom Inc - CA |
831-316-4 | San Francisco | Santa Cruz | 262,382 | Bandwidth.com CLEC LLC - CA |
831-316-7 | San Francisco | Santa Cruz | 262,382 | Comcast Phone of California LLC - CA |
831-316-9 | San Francisco | Santa Cruz | 262,382 | Level 3 Communications LLC - CA |
831-316-2 | Sunnyvale | Santa Cruz | 262,382 | Cellco Partnership dba Verizon Wireless - CA |
831-319-7 | Oakland | Santa Cruz | 262,382 | T-Mobile USA Inc |
831-319-0 | San Francisco | Santa Cruz | 262,382 | Allegiance Telecom Inc - CA |
831-319-8 | Santa Clara | Santa Cruz | 262,382 | Sprint Spectrum LP |
831-319-4 | Watsonville | Santa Cruz | 262,382 | Charter Fiberlink CA-CCO LLC - CA |
831-320 | Salinas | Monterey | 415,057 | Cellco Partnership dba Verizon Wireless - CA |
831-324-0 | Salinas | Monterey | 415,057 | Comcast Phone of California LLC - CA |
831-324-3 | Salinas | Monterey | 415,057 | New Cingular Wireless PCS LLC |
831-324-6 | Salinas | Monterey | 415,057 | U.S. Telepacific Corporation - CA |
831-325-2 | San Francisco | Santa Cruz | 262,382 | Bandwidth.com CLEC LLC - CA |
831-325-0 | San Francisco | Santa Cruz | 262,382 | Level 3 Communications LLC - CA |
831-325-0 | Santa Clara | Santa Cruz | 262,382 | Sprint Spectrum LP |
831-331-2 | San Francisco | Santa Cruz | 262,382 | CF Communications LLC dba Telekenex - CA |
831-331-4 | San Francisco | Santa Cruz | 262,382 | Level 3 Communications LLC - CA |
831-331-0 | Santa Clara | Santa Cruz | 262,382 | New Cingular Wireless PCS LLC |
831-331-9 | Sunnyvale | Santa Cruz | 262,382 | Cellco Partnership dba Verizon Wireless - CA |
831-332 | Santa Clara | Santa Cruz | 262,382 | New Cingular Wireless PCS LLC |
831-333-0 | Monterey | Monterey | 415,057 | Pacific Bell Telephone Company |
831-333-6 | Salinas | Monterey | 415,057 | Cellco Partnership dba Verizon Wireless - CA |
831-334 | Santa Clara | Santa Cruz | 262,382 | New Cingular Wireless PCS LLC |
831-335 | Felton | Santa Cruz | 262,382 | Pacific Bell Telephone Company |
831-336-0 | Ben Lomond | Santa Cruz | 262,382 | Pacific Bell Telephone Company |
831-336-7 | San Francisco | Santa Cruz | 262,382 | Utility Telephone Inc - CA |
831-337-5 | Fremont | Santa Cruz | 262,382 | XO California Inc |
831-337-4 | San Francisco | Santa Cruz | 262,382 | Level 3 Communications LLC - CA |
831-337-3 | San Francisco | Santa Cruz | 262,382 | Utility Telephone Inc - CA |
831-337-0 | San Jose | Santa Cruz | 262,382 | MCI Worldcom Communications Inc - CA |
831-337-7 | Sunnyvale | Santa Cruz | 262,382 | Qwest Communications Company LLC |
831-338-0 | Boulder Creek | Santa Cruz | 262,382 | Pacific Bell Telephone Company |
831-345 | Sunnyvale | Santa Cruz | 262,382 | Cellco Partnership dba Verizon Wireless - CA |
831-350-1 | Monterey | San Benito | 55,269 | Bandwidth.com CLEC LLC - CA |
831-350-0 | Salinas | San Benito | 55,269 | Level 3 Communications LLC - CA |
831-359-0 | San Francisco | Santa Cruz | 262,382 | Level 3 Communications LLC - CA |
831-359-9 | Sunnyvale | Santa Cruz | 262,382 | Cellco Partnership dba Verizon Wireless - CA |
831-372 | Monterey | Monterey | 415,057 | Pacific Bell Telephone Company |
831-373 | Monterey | Monterey | 415,057 | Pacific Bell Telephone Company |
831-375 | Monterey | Monterey | 415,057 | Pacific Bell Telephone Company |
831-382-3 | Monterey | Monterey | 415,057 | Bandwidth.com CLEC LLC - CA |
831-382-8 | Salinas | Monterey | 415,057 | U.S. Telepacific Corporation - CA |
831-382-2 | Salinas | Monterey | 415,057 | Utility Telephone Inc - CA |
831-382-0 | San Lucas | Monterey | 415,057 | Pacific Bell Telephone Company |
831-383-9 | Salinas | Monterey | 415,057 | Cellco Partnership dba Verizon Wireless - CA |
831-383-7 | Salinas | Monterey | 415,057 | CF Communications LLC dba Telekenex - CA |
831-383-0 | Salinas | Monterey | 415,057 | MetroPCS Inc |
831-383-5 | Salinas | Monterey | 415,057 | Utility Telephone Inc - CA |
831-384 | Marina | Monterey | 415,057 | Pacific Bell Telephone Company |
831-385 | King City | Monterey | 415,057 | Pacific Bell Telephone Company |
831-386-0 | King City | Monterey | 415,057 | Pacific Bell Telephone Company |
831-387-0 | Salinas | Monterey | 415,057 | Pac-West Telecomm Inc - CA |
831-387-5 | Salinas | Monterey | 415,057 | Utility Telephone Inc - CA |
831-389 | Paicines | San Benito | 55,269 | Pinnacles Telephone Company |
831-392-7 | Salinas | Monterey | 415,057 | New Cingular Wireless PCS LLC |
831-392-8 | Salinas | Monterey | 415,057 | YMax Communications Corporation - CA |
831-392-0 | Seaside | Monterey | 415,057 | Pacific Bell Telephone Company |
831-393-4 | Salinas | Monterey | 415,057 | YMax Communications Corporation - CA |
831-393-0 | Seaside | Monterey | 415,057 | Pacific Bell Telephone Company |
831-394 | Seaside | Monterey | 415,057 | Pacific Bell Telephone Company |
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