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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, respectively. [ 1 ] 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 ...
Another fourteen counties were formed through further subdivision from 1861 to 1893. The most recent county to form was Imperial County, in 1907. California is home to San Bernardino County, the largest county in the contiguous United States, as well as Los Angeles County, the most populous county in the United States.
Rank County State County seat Total area Land area 1 San Bernardino County: California: San Bernardino: 20,105.32 sq mi (52,072.5 km 2) : 20,052.5 sq mi (51,936 km 2) : 2
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.
Location of California in the United States. California is the most populous and third largest U.S. state by area, located on the West Coast of the United States.According to the 2020 United States Census, California's population is 39,538,223 and has 155,858.33 square miles (403,671.2 km 2) of land.
According to the U.S. Census Bureau, the county has a total area of 20,105 square miles (52,070 km 2), of which 20,057 square miles (51,950 km 2) is land and 48 square miles (120 km 2) (0.2%) is water. [15] It is the largest county by area in California and the largest in the United States (excluding boroughs in Alaska). [16]
It includes Imperial, Inyo, and Mono counties, as well as portions of North County San Diego, Riverside, San Bernardino, Los Angeles and Kern counties. Area code 760 was created on March 22, 1997 in a split of area code 619. [1] Area code 442 was added to the same area on November 21, 2009.
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. It originally covered most of northeastern California, but area code splits have reduced its coverage to the greater ...