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Area codes 530 and 837

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(Redirected from Area code 837) Area code in northern California
458/541775702928442/760916/279530707209559831805661858909951619213323707916/279415650510/341925408209831805661442/760310/424747/818626909951949562657/714
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.Area code 530 is shown in red.

Area codes 530 and 837 are telephone area codes in the North American Numbering Plan (NANP) in northeastern and Northern California. 530 was created in 1997 in an area code split of 916 and 837 was added to the same numbering plan area as an overlay in 2025.

The numbering plan area (NPA) includes the Sacramento Valley, including some outer suburbs of Sacramento, Shasta Cascade, and the northern Sierra Nevada. It comprises all or sections of the following counties: Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Sutter, Tehama, Trinity, Yolo, and Yuba.

History

Area code 530 was created in a split of numbering plan area 916 on November 1, 1997. Simultaneously, the Dixon exchange was reassigned from area code 916 to area code 707, and from the Sacramento Local access and transport area (LATA) to the San Francisco LATA.

Prior to October 2021, area code 530 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.

On June 8, 2023, the California Public Utilities Commission assigned area code 837 to overlay 530, effective January 31, 2025. 837 will serve as California's 40th area code. As ten-digit dialing is already in effect, no permissive dialing period will be necessary.

Service area

Major cities in the numbering plan area include Auburn, Chico, Colfax, Davis, Grass Valley, Corning, Marysville, Oroville, Paradise, Placerville, Redding, Red Bluff, Susanville, Truckee, Woodland, Yuba City, and South Lake Tahoe.

Alpine County

Butte County

Colusa County

El Dorado County

Glenn County

Humboldt County

Lassen County

Modoc County

Nevada County

Placer County

Plumas County

Shasta County

Sierra County

Siskiyou County

Sutter County

Tehama County

Trinity County

Yolo County

Yuba County

See also

References

  1. "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.
  2. "Planning Letter 621: NPA 837 and 530 All-Services Overlay (California)" (PDF). NANPA. 2023-08-08. Retrieved 2023-08-08.
  3. "CPUC Provides More Numbers for 530 Area Code".

External links

California area codes: 209/350, 213/323, 310/424, 408/669, 415/628, 510/341, 530, 559, 562, 619/858, 626, 650, 661, 707/369, 714/657, 760/442, 805/820, 818/747, 831, 909/840, 916/279, 925, 949, 951
North: 541/458
West: 707/369 530/837 East: 775
South: 209/350, 760/442, 916/279
Nevada area codes: 702/725, 775
Oregon area codes: 503/971, 541/458

41°N 121°W / 41°N 121°W / 41; -121

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