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Area codes 415 and 628 are telephone area codes in the North American Numbering Plan (NANP) for the city of San Francisco and its northern suburbs in Marin County (across the Golden Gate), and the northeast corner of San Mateo County in the U.S. state of California.
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. As of July 2023, California has 38 active area codes.
Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay .
Area codes 415 and 628 are telephone area codes in the North American Numbering Plan (NANP) for the city of San Francisco and its northern suburbs in Marin County (across the Golden Gate), and the northeast corner of San Mateo County in the U.S. state of California.
Today, the 415 area code and its overlay area code 628 serve the greater San Francisco Bay area, including the City and County of San Francisco, the majority of Marin County and a small portion of San Mateo County.
20 de feb. de 2015 · The 415 area code, which still covers San Francisco and parts of Marin and San Mateo counties, is being joined by the 628. The new number will be overlaid into the existing 415 geographical...
Area code 415 is located in California. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
