Area coe 908 is an area code in New Jersey. The area code covers the North/Central portions of the state. It includes communities in Union County (Cranford, Elizabeth, Plainfield, Scotch Plains, Westfield), Somerset County (Basking Ridge, Bridgewater, Somerville, Warren Township), Middlesex County (South Plainfield), Hunterdon County (Clinton, Flemington) and Warren County (Phillipsburg).