New Jersey Area Code Information

New Jersey is currently using ten area codes. Jersey utilizes four area code overlay plans, often called overlay complexes.

Area code 201 originally covered all of New Jersey when it was established in 1947. It was not until 1957 that New Jersey experienced sufficient growth in population and telephone use to need an additional area code. In 1957 area code 201 was split to form area code 609. The two area codes of 201 and 609 were sufficient to meet the numbering needs in New Jersey for more than thirty-three years until 1990 when area code 908 was put into service.

Changes and History of New Jersey Area Codes:

01/01/1947
Area code 201 was put into service. Area code 201 has been split 3 times. In 1957 area code 201 was split to form area code 609. In 1990 area code 201 was split to form area code 908. In 1997 area code 201 was split to form area code 973. In 2001 area code 201 was overlaid with area code 551.

01/01/1957
Area code 609 was put into service. Area code 609 was created from a split of area code 201. In 1999 area code 609 was split to form area code 856.

11/01/1990
Area code 908 was put into service. Area code 908 was created from a split of area code 201. In 1997 area code 908 was split to form area code 732.