List of California area codes

In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes.

The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively.

[1] As of July 2023, California has 38 active area codes.

Area code 837 is scheduled for overlay on 530 (January 31, 2025), respectively.

Area code 357 will be an overlay in area code 559 starting first quarter of 2025 (https://docs.cpuc.ca.gov/PublishedDocs/Published/G000/M530/K320/530320126.PDF).

458/541 775 702 928 442/760 916/279 530 707 209 559 831 805 661 858 909 951 619 213 323 707 916/279 415 650 510/341 925 408 209 831 805 661 442/760 310/424 747/818 626 909 951 949 562 657/714
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.