Area codes 916 and 279

Originally, the plan area covered the far northern portion of the state.

In 1950, as part of a realignment of California's area codes, 916 was rotated to cover the northeastern corner of California, from the Sierra Nevada to the Central Valley.

[citation needed] The numbering plan area was split in a flash-cut on March 1, 1959, when area code 707 was created out of the northwest portion.

[1] In 2017, the CPUC approved an overlay area code to take effect in 2018, as all available prefixes were expected to be allocated by December 2018.

[4] Area codes 916 and 279 encompass Sacramento and its surrounding suburbs:

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.Area code 916 is shown in red.