Delaware (State of Delaware) is in the southwest of the United States, close to the Atlantic coast, and the government station is in Dover (Dover). The state has a land area of 6,452 square kilometers and a population of about 900,000. The main airports are: Newark Airport. Delaware's agriculture, manufacturing, and tertiary industries are relatively developed. Because of the many rivers, water transportation is developed. With natural gas and liquefied petroleum gas, the communication system is quite modern, and the water resources are abundant. The Delaware intrastate highway network is centered on Wilmington. Interstate direct access to New York, Philadelphia, Baltimore and Washington. Wilmington in the state is the shipping terminal and airport. We've compiled the zip codes for some of the major cities in Delaware for you, the state's zip abbreviated code is DE and the area code is 302. The postcodes of Dover are 19901, 19903, 19904, 19905, 19906. The postal code for Wilmington is 19801-19899. The postal code for Newark is 19702-19726.