908 Area Code – Elizabeth, New Jersey: Location, Time Zone & History

Central New Jersey's 908 traces back to June 1989, when it was announced as a split from the original northern New Jersey area code 201, entering service November 1, 1990. A permissive dialing period let residents adjust before 908 became mandatory on June 8, 1991, by which point it carried roughly 1.5 million access lines across Union, Somerset, Hunterdon, Warren, and parts of Middlesex and Morris counties.

The code shrank once: on January 1, 1997, its southeastern reaches -- Middlesex, Monmouth, and northern Ocean counties -- split off as area code 732, leaving 908 with its present Union, Somerset, Hunterdon, and Warren footprint. Remarkably, 908 has never been overlaid; along with 856, it remains one of only two New Jersey area codes still serving its territory as a single geographic code more than three decades on.

Elizabeth, the code's largest city, faces Staten Island across the Arthur Kill and hosts half of the Port Newark-Elizabeth Marine Terminal, the world's first dedicated container-ship terminal. Kenilworth in Union County served as Merck & Co.'s world headquarters campus from 2015 into the 2020s, part of a longer pharmaceutical-research legacy in the region. Beyond the ports and labs, the numbering plan area also covers:

• Port and logistics activity anchored by the Elizabeth Marine Terminal
• Agriculture and equestrian life in Hunterdon and Warren counties
• Manufacturing and warehousing along the I-78 and I-287 corridors
• Communities from Plainfield and Somerville to Flemington and Phillipsburg