Derry Township, then a part of Lancaster County, was incorporated in 1729.
While few outside the region might recognize the name of Derry Township, within its borders is the globally recognized Hershey Chocolate Company and Theme Park.
Derry is home to four properties listed on the National Register of Historic Places.
The Quarries of the Hummelstown Brownstone Company — prior to the Milton Hershey's chocolate empire beginning in 1903, this was the largest employer in Derry Township and Hummelstown. More than 23 buildings that are listed on the National Register contain brownstone that was quarried at Hummelstown.
The Derry Presbyterian Sessions House, ca. 1732.
Milton S. Hershey Mansion, also known as "Highpoint," ca. 1908 and 1945.
Hershey Community Center Building, ca. 1932 — one of several local building projects sponsored by Milton Hershey during the Great Depression; others included the Milton hershey Jr./Sr. High School (ca. 1934), the Hershey Chocolate Office Building (1935) and the Hershey Sports Arena (1936).