{{short description|Area code in northern California}} {{Use mdy dates|date=March 2026}} {{Use American English|date=March 2026}} {{California area codes image map|530}} '''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.<ref name="pl556">{{cite web |url=https://www.nanpa.com/sites/default/files/planning_letters/PL-556.pdf |title=Planning Letter 556: Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline) |date=2021-01-08 |publisher=NANPA |access-date=2025-03-15 }}</ref>

On June 8, 2023, the California Public Utilities Commission assigned area code 837 to overlay 530, effectively in service on January 31, 2025.<ref>{{cite web |url=https://www.nanpa.com/sites/default/files/planning_letters/PL-621.pdf |title=Planning Letter 621: NPA 837 and 530 All-Services Overlay (California) |publisher=NANPA |date=2023-08-08 |access-date=2023-08-08 }}</ref> 837 is California's 40th area code. As ten-digit dialing is already in effect, no permissive dialing period will be necessary.<ref>{{cite web|url=https://www.cpuc.ca.gov/news-and-updates/all-news/cpuc-provides-more-numbers-for-530-area-code-2023 | title=CPUC Provides More Numbers for 530 Area Code }}</ref>

==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=== {{div col|colwidth=10em}} *Alpine Village *Bear Valley *Markleeville *Mesa Vista *Woodfords {{div col end}}

===Butte County=== {{div col|colwidth=10em}} *Bangor *Berry Creek *Biggs *Brush Creek *Butte Meadows *Centerville *Cherokee *Chico *Cohasset *Concow *Dayton *DeSabla *Durham *East Biggs *Feather Falls *Forbestown *Forest Ranch *Gridley *Inskip *Magalia *Merrimac *Nord *Oregon City *Oroville East *Oroville *Palermo *Paradise *Pulga *Richvale *South Oroville *Stirling City *Thermalito *Yankee Hill {{div col end}}

===Colusa County=== {{div col|colwidth=10em}} *Arbuckle *College City *Colusa *Grimes *Maxwell *Princeton *Sites *Stonyford *Williams {{div col end}}

===El Dorado County=== {{div col|colwidth=10em}} *Cameron Park *Camino *Coloma *Cool *Diamond Springs *Ditch Camp Five *Echo Lake *El Dorado *Fresh Pond *Garden Valley *Georgetown *Kyburz *Little Norway *Meyers *Nebelhorn *Newtown *Pacific *Phillips *Placerville *Pollock Pines *Rescue *Riverton *Sciots Camp *Shingle Springs *South Lake Tahoe *Twin Bridges *White Hall {{div col end}}

===Glenn County=== {{div col|colwidth=10em}} *Artois *Glenn *Hamilton City *Ordbend *Butte City *Orland *Willows {{div col end}}

===Humboldt County=== {{div col|colwidth=10em}} *Willow Creek *Hoopa {{div col end}}

===Lassen County=== {{div col|colwidth=10em}} *Bieber *Doyle *Herlong *Janesville *Ravendale *Susanville *Termo *Westwood {{div col end}}

===Modoc County=== {{div col|colwidth=10em}} *Adin *Alturas *Canby *Cedarville *Davis Creek *Eagleville *Fort Bidwell *Newell *Stronghold *Tionesta {{div col end}}

===Nevada County=== {{div col|colwidth=10em}} *Alta Sierra *Grass Valley *Lake of the Pines *Lake Wildwood *Nevada City *Penn Valley *Rough and Ready *Truckee *Washington {{div col end}}

===Placer County=== {{div col|colwidth=10em}} *Alta *Applegate *Auburn *Carnelian Bay *Colfax *Dollar Point *Dutch Flat *Emigrant Gap *Foresthill *Gold Run, California *Homewood *Kings Beach *Meadow Vista *Sheridan *Squaw Valley *Sunnyside-Tahoe City *Tahoe Vista *Weimar {{div col end}}

===Plumas County=== {{div col|colwidth=10em}} *Almanor *Beckwourth *Belden *Blairsden *Bucks Lake *C-Road *Canyondam *Caribou *Chester *Chilcoot-Vinton *Clio *Crescent Mills *Cromberg *Delleker *East Quincy *East Shore *Graeagle *Greenhorn *Greenville *Hamilton Branch *Indian Falls *Iron Horse *Johnsville *Keddie *La Porte *Lake Almanor Country Club *Lake Almanor Peninsula *Lake Almanor West *Lake Davis *Little Grass Valley *Meadow Valley *Mohawk Vista *Paxton *Plumas Eureka *Portola *Prattville *Quincy *Spring Garden *Storrie *Taylorsville *Tobin *Twain *Valley Ranch *Whitehawk {{div col end}}

===Shasta County=== {{div col|colwidth=10em}} *Anderson *Bella Vista *Big Bend *Burney *Cassel *Castella *Cottonwood *Fall River Mills *French Gulch *Hat Creek *Igo *Lakehead-Lakeshore *McArthur *Millville *Montgomery Creek *Oak Run *Old Station *Palo Cedro *Platina *Pollard Flat *Redding *Round Mountain *Shasta Lake City *Shasta *Shingletown *Whiskeytown *Whitmore {{div col end}}

===Sierra County=== {{div col|colwidth=10em}} *Alleghany *Calpine *Downieville *Loyalton *Sierra City {{div col end}}

===Siskiyou County=== {{div col|colwidth=10em}} *Carrick *Dorris *Dunsmuir *Edgewood *Etna *Forks of Salmon *Fort Jones *Gazelle *Greenview *Grenada *Happy Camp *Hornbrook *Macdoel *McCloud *Montague *Mount Hebron *Mount Shasta *Seiad Valley *Tennant *Tulelake *Weed *Yreka {{div col end}}

===Sutter County=== {{div col|colwidth=10em}} *Live Oak *Meridian *Nicolaus *Rio Oso *Robbins *South Yuba City *Sutter *Tierra Buena *Yuba City {{div col end}}

===Tehama County=== {{div col|colwidth=10em}} *Corning *Cottonwood *Dales *Gerber-Las Flores *Los Molinos *Manton *Mill Creek *Mineral *Paskenta *Paynes Creek *Rancho Tehama *Red Bluff *Tehama {{div col end}}

===Trinity County=== {{div col|colwidth=10em}} *Big Bar *Burnt Ranch *Douglas City *Hayfork *Hyampom *Junction City *Lewiston *Mad River *Salyer *Trinity Center *Weaverville {{div col end}}

===Yolo County=== {{div col|colwidth=10em}} *Brooks *Capay *Davis *Dunnigan *El Macero *Esparto *Fremont *Knights Landing *Madison *Plainfield *Rumsey *Winters *Woodland *Yolo *Zamora {{div col end}}

===Yuba County=== {{div col|colwidth=10em}} *Beale Air Force Base *Challenge-Brownsville *Linda *Loma Rica *Marysville *Olivehurst *Plumas Lake *Wheatland {{div col end}}

==See also== *List of California area codes *List of North American Numbering Plan area codes

==References== {{Reflist}}

==External links== {{Area code footer|Map=CA}}

{{Area code box | State = CA | This = 530/837 | N = 541/458 | S = 209/350, 760/442, 916/279 | E = 775 | W = 707/369 | S1 = NV | S2 = OR }}

{{coord|41|-121|region:US-CA|display=title}}

{{DEFAULTSORT:Area Code 530}} 530 Category:Alpine County, California Category:Butte County, California Category:Colusa County, California Category:El Dorado County, California Category:Glenn County, California Category:Humboldt County, California Category:Lassen County, California Category:Modoc County, California Category:Nevada County, California Category:Placer County, California Category:Plumas County, California Category:Shasta County, California Category:Sierra County, California Category:Siskiyou County, California Category:Sutter County, California Category:Tehama County, California Category:Trinity County, California Category:Yolo County, California Category:Yuba County, California Category:Northern California Category:Sacramento Valley Category:Sierra Nevada (United States) 530 Category:1997 establishments in California Category:Telecommunications-related introductions in 2025 Category:Telecommunications-related introductions in 1997