Look up which area codes belong to what state or region in the United States, and learn how to get a local phone number in these areas.

How many area codes are there in the United States?

An area code denotes the regional location of a phone number within the United States. Currently, there are around 320 area codes, including overlays, in the USA according to the North American Numbering Plan (NANP). However, this count is by no means constant. In 1947, continental US started with about 78 numbering plan areas and underwent rapid expansion in the late 1990s to early 2000s. Overlay area codes were introduced to generate more phone numbers in areas with greater demand. Additional area codes are also planned to provide relief to regions with exhaust dates in the next four years. California has the highest number of area codes (35), followed by Texas (27) and New York (19).