middle atlantic states State of New Jersey A state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north by New York, on the east by the Atlantic Ocean, on the southwest by Delaware, and on the west by Pennsylvania. New Jersey lies within the sprawling metropolitan areas of New York and Philadelphia. LanguaL curation note: US FDA 1995 Code: US34 new jersey State of New Jersey A state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north by New York, on the east by the Atlantic Ocean, on the southwest by Delaware, and on the west by Pennsylvania. New Jersey lies within the sprawling metropolitan areas of New York and Philadelphia. LanguaL curation note: US FDA 1995 Code: US34 new jersey