About This Place
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°27′16″N 75°42′50″W / 39.45444°N 75.71389°W / 39.45444; -75.71389 (39.454352, -75.713816) with an elevation of 69 feet (21.0 m).
According to the United States Census Bureau, the town has a total area of 6.4 square miles (16.6 km²), of which, 6.4 square miles (16.6 km²) of it is land and 0.16% is water.