Only one 'T' in Paterson. Just saying. And there's no Central Jersey. North and south are defined by the original 201 and 609 area codes. In 1958, 201 was restricted to northern New Jersey, while the area from the state capital, Trenton, southward, including the southern Jersey Shore and the New Jersey side of the lower Delaware Valley, received area code 609. For the next 33 years, area code 201 served Bergen, Hudson, Ocean, Essex, Union, Morris, Passaic, Hunterdon, Somerset, Middlesex, Monmouth, Sussex and Warren counties, a region largely coextensive with the New Jersey side of the New York City area. There is no Central Jersey. You're either north or south.