Reference Data
State Directory
California Area Codes

California Area Codes

Data last updated: March 10, 2026

Area Codes
41
Exchanges
32,136
Carriers
113
Rate Centers
739

Area Codes in California

NPA Major Cities Status Exchanges Overlay
209 Stockton, Modesto, Fresno Active 784 Yes
213 Los Angeles, Torrance, Commerce Active 786 Yes
279 Sacramento, West Sacramento, Roseville Active 786 Yes
310 Los Angeles, Torrance, Bloomington Active 786 Yes
323 Los Angeles, Torrance, Bloomington Active 786 Yes
341 San Jose, San Francisco, Oakland Active 785 Yes
350 Stockton, Fresno, Manteca Active 786 Yes
357 California Active 786 Yes
369 Concord, Oakland, San Francisco Active 786 Yes
408 San Jose, San Francisco, Santa Clara Active 787 Yes
415 San Francisco, Hayward, Oakland Active 785 Yes
424 Los Angeles, Torrance, Bloomington Active 785 Yes
442 San Diego, Palm Springs, Los Angeles Active 753 Yes
510 Oakland, San Francisco, Hayward Active 785 Yes
530 Chico, Sacramento, West Sacramento Active 782 Yes
559 Fresno, Visalia, Clovis Active 785 Yes
562 Torrance, Long Beach, Los Angeles Active 785 Yes
619 San Diego, Escondido, Chula Vista Active 786 Yes
626 Los Angeles, Torrance, Commerce Active 786 No
628 San Francisco, San Jose, Oakland Active 785 Yes
650 San Francisco, Hayward, Oakland Active 785 Yes
657 Bloomington, Los Angeles, Torrance Active 786 Yes
661 Bakersfield, Los Angeles, Torrance Active 770 No
669 San Francisco, San Jose, Oakland Active 785 Yes
707 San Francisco, Hayward, Oakland Active 785 Yes
714 Torrance, Anaheim, Bloomington Active 786 Yes
738 Ontario Active 786 Yes
747 Los Angeles, Torrance, Commerce Active 785 Yes
760 San Diego, Palm Springs, Escondido Active 785 Yes
805 San Luis Obispo, Los Angeles, Santa Barbara Active 786 Yes
818 Los Angeles, Torrance, Bloomington Active 787 Yes
820 Los Angeles, San Luis Obispo, Santa Barbara Active 786 Yes
831 Salinas, Monterey, San Francisco Active 764 No
837 California Active 786 Yes
840 Los Angeles, Riverside, Bloomington Active 786 Yes
858 San Diego, Escondido, Rancho Bernardo Active 785 Yes
909 Riverside, Los Angeles, Bloomington Active 786 Yes
916 Sacramento, West Sacramento, Roseville Active 785 Yes
925 Oakland, San Francisco, Hayward Active 785 No
949 Los Angeles, Anaheim, Irvine Active 786 No
951 Riverside, Los Angeles, Bloomington Active 786 No

Top Carriers in California

Carrier OCN NXX Count
PACIFIC BELL 9740 4893
NEW CINGULAR WIRELESS PCS, LLC 6010 2160
T-MOBILE USA, INC. 6529 2070
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 1943
ONVOY, LLC - CA 649C 1405
FRONTIER CALIFORNIA INC. 2319 931
LEVEL 3 COMMUNICATIONS, LLC - CA 8826 929
BANDWIDTH.COM CLEC, LLC - CA 981E 803
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J 613
FRACTEL, LLC 965H 597