Geographic Regions and Area Codes

Area code 551 primarily covers northeastern New Jersey, including cities such as Jersey City, Bayonne, Hoboken, Secaucus, Hackensack, and Englewood. This area code serves major counties like Bergen, Hudson, and Essex. It was introduced in 2001 as an overlay for area code 201, meaning both area codes serve the same geographic region. The overlay system allows for a greater number of phone numbers without changing the existing numbers. This is particularly beneficial for businesses looking to establish a local presence without the hassle of changing their contact information.

Key cities in the 551 area code include:

  • Jersey City
  • Bayonne
  • Hoboken
  • Secaucus
  • Hackensack
  • Englewood