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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. 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.
In 1984 Sylmar was still largely rural, but there was an area of industrial development in its southeastern portion. [20] In 1986, when its population was given 53,392, it still had some of the last large tracts of undeveloped land in the city, and the opening of the Foothill Freeway had placed it within a 45-minute drive of Downtown Los Angeles .
Area code 415 was assigned to central California, south of area code 916, and north of area code 213. It stretched from Sacramento in the north to Bakersfield in the south. [2] In 1950, the boundaries of the numbering plan area were redrawn to produce a division of the northern and central parts along a north–south-running dividing line.
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
In relief the numbering plan area was divided with several new area codes, including area code 818 and area code 310. Area code 818 entered service on January 7, 1984, [1] making Los Angeles one of the first major cities to be split among multiple area codes. Area code 626 was assigned to a portion of the eastern part on June 14, 1997.
The 27th district takes in the city of San Fernando and the Los Angeles neighborhoods of Van Nuys, Panorama City, Sylmar, Valley Village, Sun Valley, Pacoima, Toluca Lake, Valley Glen, Arleta, Mission Hills, part of Lake View Terrace, westside North Hollywood, and central Lake Balboa.
Defining the extent of an area is necessary in order to tabulate census data for that area. ZCTAs are generalized area representations of the United States Postal Service (USPS) ZIP code service areas, but are not the same as ZIP codes. Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block ...
This map is clickable; click on any region shown to visit the page for those area codes.Area code 916 is shown in red. Area codes 916 and 279 are California telephone area codes that serve Sacramento, the state capital, and most of its suburbs. Area code 916 was one of the first three original area codes established in California in October 1947.