Area codes 916 and 279

Area codes 916 and 279 are telephone area codes in the North American Numbering Plan for Sacramento, the state capital of the U.S. state of California, and parts of five surrounding counties.

Area code 916 was one of the first three area codes established in California in October 1947, originally assigned to the most northern part, but remapped in 1950 to the northeast. Area code splits have reduced the numbering plan area to the greater Sacramento area.

Area code 279 began service in March 2018 in an overlay to relieve an exhausting supply of central office codes in 916.

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