Area Code Atlas

NPA 619 split from 714

Area code 619 was created on January 1, 1982, from a split of 714, serving the San Diego region and surrounding areas in southern California. This was the first new area code in California since 1959.

NANP-Split of 619 (California) Numbering Plan Area (NPA)

Extraordinary NPA-Specific Conservation Procedures for 310, 415, 619 and 714 NPAs (California)

NPA 760 created from split of 619

Area code 760 was created in March 1997 when it split from 619, covering southeastern California including Imperial, Inyo, and Mono counties. The split served much of southeastern and southernmost California, including portions of San Diego, Riverside, San Bernardino, Los Angeles, and Kern counties.

NPA 760 split from 619

Area code 760 was created on March 23, 1997, by splitting from 619. The new code served most of outer northern San Diego County, desert areas, and southeastern California.

CPUC approves three-way split of 619

The California Public Utilities Commission approved a two-phase, three-way split of area code 619 on June 4, 1998. The plan called for the introduction of area code 858 in the first phase and area code 935 in the second phase.

NANP-Phased three-way split of 619 (California) Numbering Plan Area (NPA) with 858 & 935 NPAs

NPA 858 split from 619

Area code 858 was introduced on June 12, 1999, as the first phase of the split of 619. The new code served northwest San Diego County, while 619 continued to serve the remaining areas.

Permissive dialing begins for 858 split

Permissive dialing for the new 858 area code began on June 12, 1999, allowing calls to be completed using either the old or new area code during the transition period.

Mandatory dialing for 858 split

Mandatory dialing for the 858 area code took effect on December 11, 1999, ending the permissive dialing period and requiring callers to use the correct area code for all calls.

CPUC cancels implementation of NPA 935

The California Public Utilities Commission voted on May 4, 2000, to defer and effectively cancel the implementation of area code 935, originally planned as part of the second phase of the 619 split. This decision was made due to the success of number pooling and reduced demand for new numbers, citing the effectiveness of number pooling.

Suspension of 619 / 935 NPA Split (California)

Planned split to create NPA 935 from 619

A second phase of the 619 split was scheduled for June 10, 2000, to create area code 935 for the southern and eastern parts of San Diego County. This phase was later canceled before implementation.

Cancellation of planned 935 split from 619

The planned second phase of the 619 split, which would have created area code 935 for southern and eastern parts of San Diego County, was cancelled on June 10, 2000, due to opposition and implementation of number pooling.

NPA 415, 619, 650, 707 - Relief Plans Dismissed (California)

NPA 619 and 858 Boundary Elimination Overlay (California)

Permissive 1+10 digit dialing for 619/858 overlay

A permissive dialing period for 1+10 digit dialing began in October 2017 for the 619 and 858 area codes, allowing customers to use either 7-digit or 1+10 digit dialing during the transition to an overlay complex.

Mandatory 1+10 digit dialing for 619/858 overlay

Mandatory 1+10 digit dialing began in April 2018 for all calls within and between the 619 and 858 area codes, coinciding with the implementation of the overlay complex.

619 and 858 overlay complex implemented

The boundary between area codes 619 and 858 was eliminated in June 2018, creating an overlay complex for all of inner San Diego County. Both area codes now serve the same geographic region, and ten-digit local dialing became mandatory at that time.

Overlay relief planned for 619 and 858

The California Public Utilities Commission approved a relief plan that eliminated the boundary between 619 and 858, creating an overlay complex for all of inner San Diego County. This change required ten-digit dialing.

Mandatory ten-digit dialing implemented for 619

Ten-digit local dialing became mandatory in June 2018 for the overlay complex of area codes 619 and 858 in San Diego County.

Mandatory ten-digit dialing implemented for 858

Ten-digit local dialing became mandatory in June 2018 for the overlay complex of area codes 619 and 858 in San Diego County.

619 projected to exhaust prefixes

Projections in March 2019 indicated that area code 619 would exhaust its available central office prefixes, prompting the implementation of the overlay with 858.

Projected relief for San Diego area codes

According to projections, San Diego area codes 619 and 858 are not expected to require further relief until 2043.