Sacramento, CA and surrounding cities and cities could have a brand new space code beginning March 10, 2018. The brand new space code 279 was permitted by the California Public Utilities Fee (CPUC) on February 9, 2017 because the reduction methodology for the 916 NPA (Numbering Plan Space), masking, amongst different cities: Sacramento, Citrus Heights, Elk Grove, Rancho Cordova, West Sacramento. The brand new 916/279 all-services overlay will serve the very same geographic space at present served by space code 916. 1+10 digit dialing shall be carried out in consequence and the permissive 7/1+10 digit dialing will last more than normal on this case.
See official NANPA announcement and map of the new overlay complex (PDF doc).
Go to area code 279 web page for a listing of cities served, map and different information.