Area code 530 is a telephone area code in the North American Numbering Plan (NANP) in northeastern and Northern California. It was created in 1997 in an area code split of 916.

Numbering plan areas in California (blue) and border states. Area code 530 is shown in red.

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 edit

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.[1]

On June 8, 2023, the California Public Utilities Commission assigned Area code 837 as the overlay area code for 530, effective January 31, 2025.[2] 837 will serve as California's 40th area code. As ten-digit dialing is already in effect, no permissive dialing period will be necessary.[3]

Service area edit

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 edit

Butte County edit

Colusa County edit

El Dorado County edit

Glenn County edit

Humboldt County edit

Lassen County edit

Modoc County edit

Nevada County edit

Placer County edit

Plumas County edit

Shasta County edit

Sierra County edit

Siskiyou County edit

Sutter County edit

Tehama County edit

Trinity County edit

Yolo County edit

Yuba County edit

See also edit

References edit

  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 edit

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

41°N 121°W / 41°N 121°W / 41; -121