what is the area code for new jersey
New Jersey Area Code Overlays. (201 and 551) - (732 and 848) (973 and 862 ) New Jersey is currently using nine area codes. Jersey utilizes three 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.