New Jersey (State of New Jersey) is located in the northeastern region of the United States, also known as the eastern region, close to the central Atlantic region. The state has an area of 20,295 square kilometers and a population of 8.72 million, which is a state with a relatively high population density. Important cities in New Jersey are: Newark, Jersey City, Hoboken, Atlantic City, etc. The largest city is Newark (Newark). New Jersey has a developed economy and strong manufacturing capabilities, especially its outstanding manufacturing capabilities, ranking first in the United States. There are many products exported, including metals, precious stones, industrial equipment, electronic products, computers, optical and medical equipment, medical preparations, chemical products, aircraft parts, industrial machinery, transportation equipment and food. And maintain a strong export to China. In terms of transportation, New Jersey's transportation is very convenient, whether it is road or air or sea transportation, it is very developed. The most important airport is Newark International Airport. Near the airport are ports and roads, as well as railways, which directly promote the development of the local freight industry. The more important ports are: Newark/Port Elizabeth and Delaware River Port. The abbreviated zip code for New Jersey is NJ, the area code is 201 - 609 - 732 - 856 - 908 - 973, and the zip codes of the major cities are as follows: Newark 07101-07199; Jersey City ZIP code is 07907-07399; Atlantic City ZIP code is 08401-08405.