Middletown is a town in New Castle County, Delaware, United States. According to the 2010 Census, the population of the town is 18,871.
Middletown is located at 39°26′58″N 75°42′59″W / 39.44944°N 75.71639°W / 39.44944; -75.71639 (39.4495560, -75.7163207) with an elevation of 66 feet (20.1 m).
According to the United States Census Bureau, the town has a total area of 11.61 square miles (30.1 km2), of which, 11.61 square miles (30.1 km2) is land and 0.16% is water....
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia