Area code 908 is a telephone area code in the North American Numbering Plan (NANP) in the northern part of the U.S. state of New Jersey. The numbering plan area (NPA) 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.
In June 1989, New Jersey Bell announced a split of numbering plan area 201 to create a new area code, 908, in North Jersey. The area code became functional in January 1990, which started a permissive dialing period for the 314 central offices during which existing telephone numbers in the service area could be dialed with 201 or 908 area codes. The permissive dialing period ended on June 8, 1991, making the split fully effective. Customers in the remaining 201 area had to prefix existing and new numbers in 908 with 1-908. At the time of the split, 1.5 million access lines were served by the new area code.
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 (particularly Inman Avenue and north of Oak Tree Road) and Piscataway (particularly the New Market area near Plainfield). 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.
- The Star Gazette, New 908 are code will take effect this Saturday, Thursday, June 6, 1991
- About Verizon New Jersey: Years 1985 to 1998 Archived November 13, 2007, at the Wayback Machine, Verizon Communications, accessed May 12, 2007.
- Newman, Andy. "New Area Codes Introduced", The New York Times, June 2, 1997. Accessed January 23, 2008.
|West: 484/610, 570/272||908||East: 347/718/929/917|
|South: 215/267/445, 609/640, 732/848|
|New York area codes: 212/332/646, 315/680, 347/718/929, 516, 518/838, 585, 607, 631/934, 716, 845, 914, 917|
|Pennsylvania area codes: 215/267/445, 223/717, 272/570, 412, 484/610, 724, 814, 878|