new barbadoes neck is the name given in the colonial era for the peninsula in northeastern new jersey, usa between the lower hackensack and passaic rivers, in what is now western hudson county and southern bergen county. the neck begins in the south at kearny point in the newark bay and is characterized by a ridge (creating the valley of the passaic) along the west and part of the new jersey meadowlands (the flood plain of the hackensack) on the east.