Derry Township, Dauphin County, Pennsylvania

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Derry Township is a township in Dauphin County, Pennsylvania, United States. The population was 21,273 at the 2000 census. Hershey, Pennsylvania, the site of the well-known Hershey's chocolate factory and its affiliated amusement park, are also located within the township. Derry Township is home to one of the largest non-metropolitan Public Works in Pennsylvania.

It was named after the city of Derry in Ireland[citation needed].



The Township of Derry was incorporated on August 1, 1729, when Lancaster County divided the territory for tax purposes. At that time, the boundaries of Derry Township were much larger and included what are currently three other townships within Lancaster and Dauphin County. The western portion became Derry Township and the eastern portion became Londonderry Township, Pennsylvania. The first official government in Derry Township was established in 1759. Five officials were elected for one-year terms. The number of elected officials in Derry remains five, however the terms are six years.

Derry became a part of Dauphin County when it was established in 1785. In 1787, the population of Derry Township was 198. The most recent census records the population as 21,273.


According to the United States Census Bureau, the township has a total area of 27.3 square miles (70.7 km²), of which, 27.1 square miles (70.3 km²) of it is land and 0.2 square miles (0.5 km²) of it (0.66%) is water.

Unincorporated communities and census designated places in Derry Township.


As of the census[1] of 2000, there were 21,273 people, 8,861 households, and 5,688 families residing in the township. The population density was 784.0 people per square mile (302.7/km²). There were 9,481 housing units at an average density of 349.4/sq mi (134.9/km²). The racial makeup of the township was 92.65% White, 1.67% African American, 0.07% Native American, 3.96% Asian, 0.02% Pacific Islander, 0.43% from other races, and 1.19% from two or more races. Hispanic or Latino of any race were 1.40% of the population.

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