AREA CODE 973

'Area code 973' is a North American Numbering Plan area code for Northern New Jersey that covers portions of Bergen, Essex, Hudson, Morris, Passaic and Sussex Counties. It was formed in 1997 when the Area code 201 was split. In 2001, the 862 area code was created to overlay the 973 area code, making 10-digit dialing mandatory.
According to Verizon, area code 973 is used in the state of New Jersey by the following communities:
;Bergen County

★ Fair Lawn (mostly 201)

★ East Rutherford (mostly 201)

★ Garfield

★ Lodi (a minority uses 201)

★ Saddle Brook (mostly 201)
;Essex County

★ Belleville

★ Bloomfield

★ Caldwell

★ Cedar Grove

★ East Orange

★ Glen Ridge

★ Irvington

★ Livingston

★ Maplewood

★ Millburn-Short Hills

★ Montclair

★ Newark

★ Nutley

★ Orange

★ South Orange

★ Verona

★ West Orange
;Hudson County

★ East Newark

★ Harrison
;Morris County

★ Chatham Borough

★ Chatham Township

★ Denville

★ Hanover Township

★ Lincoln Park

★ Madison

★ Montville

★ Morristown

★ Mountain Lakes

★ Parsippany-Troy Hills

★ Randolph

★ Roxbury

★ Whippany (part of Hanover Township)
;Passaic County

★ Clifton

★ Passaic

★ Paterson

★ Prospect Park

★ Ringwood (a minority uses 201)

★ Wanaque

★ Wayne

★ West Milford
;Sussex County

★ Byram Township

★ Hopatcong

★ Sparta

★ Vernon Township