The area codes in the U.S. State of New Jersey are a component of the North American Numbering Plan.
Northeastern New Jersey, primarily Bergen County and Hudson County.
Overlays area code 201.
Trenton, Lawrenceville, Princeton, Medford, Atlantic City, Barnegat, Wildwood, Ocean City, Burlington, Cape May.
Overlays 609.[1]
Toms River, Edison, New Brunswick, Freehold, Red Bank, Woodbridge, Perth Amboy, Carteret
Overlays 732.
Camden, Cherry Hill, Glassboro, Vineland, Salem, Marlton, Clayton, Monroeville.
Elizabeth and Union County, Somerset County, Warren County, Hunterdon County, and parts of southern and western Morris County.
Essex County, Passaic County, Morris County, Sussex County, and small portions of Bergen and Hudson County.
Overlays 973.
Area code 201 was the original, sole area code for New Jersey in 1947, when the American Telephone and Telegraph Company (AT&T) devised the first continental telephone numbering plan. It was also the first area code assigned in the numbering plan.