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In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
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.
831 — Monterey, San Benito and Santa Cruz Counties. Originally part of area code 408. 916/279 — Sacramento County and the Sacramento suburbs in western Placer and El Dorado Counties. One of the three original area codes in California, formerly covered all areas now within 530.
name = Northern California Name used in the default map caption; image = USA California Northern location map.svg The default map image, without "Image:" or "File:" image1 = Relief_map_of_Northern_California.png An alternative map image, usually a relief map, which can be displayed via the relief or AlternativeMap parameters; top = 41.997577
Location along California's northern border; del norte is Spanish for "northern". General Law 26,589: 1,008 sq mi (2,611 km 2) El Dorado County: 017: Placerville: 1850: original: El Dorado, a mythical city of gold, owing to the area's significance in the California Gold Rush: Charter 192,215: 1,712 sq mi (4,434 km 2) Fresno County: 019: Fresno ...
Starting next year, residents and business owners in northeastern California will have access to a new area code. The 530 area code — which includes Davis, El Dorado Hills, Oroville, Placerville ...
Orange County Area. Santa Ana-Anaheim-Irvine, CA. Santa Ana; South Coast Metro; Santa Ana Valley; Saddleback Valley; Santa Ana Mountains; San Diego–Tijuana. San Diego metropolitan area. North County. North County Coastal; North County Inland; Temecula Valley; East County. Mountain Empire; South Bay
2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...