Area code 201 is a North American telephone area code assigned to Jersey City and northern New Jersey. First assigned in 1947 as one of the original 86 area codes in the North American Numbering Plan, 201 is among the oldest area codes in the country. It serves Jersey City, Hoboken, Bayonne, Union City, and the rest of Bergen and Hudson counties, and is a local (non-toll-free) area code in the Eastern Time Zone.