The overlay will allow existing 510 area code customers to keep their telephone numbers and area code.
Calls to 911, as well as 211, 311, 411, 511, 611, 711 and 811 will not be affected, and will continue to be dialed with 3 digits. Majority of the public comments indicate support for an overlay as an overlay allows existing 510 customers to keep the same area code and telephone number; an overlay also has minimal impact on local government and emergency services.
On June 21, 2018, the California Public Utilities Commission CPUC adopted Decision 18-06-013 , approving an overlay that will add the new 341 area code to the geographic region served by the 510 area code. Information on our programs, complaint process, brochures, and more!
Beginning July 22, 2019, new telephone lines or services may be assigned numbers with the 341 area code, depending on telephone number availability.
The 510 area code was created when it was split off of the 415 area code in September 1991. The 510 area code was split again when the 925 area code was split off in 1998.
Therefore, calling areas and rates will not change. Attendees asked questions and expressed their opinions at the public meetings, and were further provided an opportunity to submit written comments to the CPUC. Visit the Consumer Information Website.
At the meetings, NANPA presented the overlay and split options for adding a new area code to the 510. The area served by the 510 area code comprises the western portions of Alameda and Contra Costa Counties. Looking for Consumer Information?