Area code 908
Area code 908 is a telephone area code in the North American Numbering Plan in the northern part of the U.S. state of New Jersey. The numbering plan area comprises communities in Union County, Somerset County, northern parts of Middlesex County, Hunterdon County, Warren County, and parts of Morris County as well as some cell phones in Monmouth and Ocean Counties.
Area code 908 was created when numbering plan area 201 was divided on June 8, 1991 in an area code split. 201 had been the area code for all of northern and central New Jersey since 1958.
On January 1, 1997, 908 was reduced to its western portion, forming area code 732 in the central eastern region of New Jersey. It was the penultimate area code added in the X0X format when 909 was added a year later in California.
Middlesex County is largely 908 in South Plainfield and parts of Edison and Piscataway. 908 and the Delaware Valley's 856 are the only area codes in the state that have yet to be overlaid and still use seven-digit dialing.
