916 Area Code 

On November 17, 2016, the North American Numbering Plan Administrator (NANPA) filed an application (A-16-11-007) with the California Public Utilities Commission (CPUC) to introduce a new area code to the area now served by the 916 area code.

The 916 area code is forecasted to use up all its available prefixes by the 1st quarter of 2018.  Adding a new area code to the 916 area code region will provide additional prefixes and ensure new telephone numbers are available for the new customers. The telecommunications service providers have proposed to add the new area code using the overlay method.

Public Meetings were held on August 15 and 16, 2016 in the Cities of Sacramento, Folsom and Roseville.  At these meetings, two options for introduction of the new area code were discussed and explained.

  1. All services overlay:

Under this option, all existing 916 area code telephone numbers would retain their 916 area code and 7-digit telephone numbers. The new area code would be introduced and new telephone numbers might be assigned with the new area code.  When the overlay is implemented, all calls, even local calls, made from 916 area code numbers will have to be dialed using 1 + area code + 7-digit telephone number.

  1. Split:

The split option for the 916 area code has the following limitations. 

  • Assigned prefixes in the 916 are concentrated in two rate centers in the City of Sacramento - Sacramento: Main DA and Sacramento: North DA.  The imbalance in prefix assignments results in a projected life of 55 years on one side of the split line, and a projected life of 23 years on the other side of the split line.   The 32-year difference in the projected lives on the two sides of the split line would not meet the telecommunications industry area code relief criteria, and would need to be suspended pending Federal Communications Commission direction. 
  • The split option would also split portions of the Cities of Sacramento, Rancho Cordova, Elk Grove, and Citrus Heights.

Attendees spoke at the meetings and provided written comments about their concerns.  Attendees at the three 916 meetings were mostly local jurisdiction officials.  They expressed support for the overlay option.  Some local jurisdiction officials inquired about steps that should be taken to prepare for the proposed overlay.  CPUC staff and NANPA explained that preparation includes programming office equipment, such as fax and answering machines, as well as alarm and security devices to accommodate 1 + 10-digit dialing.  Several commenters also inquired about the timeline and dialing procedures associated with the proposed overlay.

916 Public Meeting Materials

916 Public Meeting Staff Report

On Feb. 9, 2017, the CPUC acted to ensure that phone numbers continue to be available to meet demand in the 916 area code by approving an area code overlay that will provide additional numbering resources while minimizing customer inconvenience. The new area code that will be added to the 916 region is 279. Read our press release and view our presentation.



The 916 area code was created in 1947 as one of the original three area codes in California. 


The 916 area code serves the greater Sacramento area, which includes parts of El Dorado, Solano, Sutter, Yolo, Placer, and Sacramento Counties. The 916 area code serves the cities of Lincoln, Loomis, Rocklin and Roseville in Placer County; Citrus Heights, Elk Grove, Folsom, Isleton, Rancho Cordova, and Sacramento in Sacramento County; and the City of West Sacramento in Yolo County.

The 916 area code is bordered on the north and east by the 530 area code, to the west by the 707 area code, and to the south by the 925 area code and the 209 area code.

 916 Area Code Background 

The CPUC appreciates public feedback concerning area code relief for the 916 area code.  You may submit comments by:

  • postal mail to CPUC Public Advisor’s Office, 320 W. 4th Street, Suite 500, Los Angeles, CA 90013,
  • email to public.advisor@cpuc.ca.gov, or
  • calling the Area Code Hotline number at (866) 340-6147.