Derry Township is a township in Westmoreland County, Pennsylvania, in the United States. It surrounds the Borough of Derry, which is a separate municipality. As of the 2000 census, the township population was 14,726.It was named after the city of Derry by Scotch-Irish settlers.HistoryKeystone State Park was established in 1945.The Samuel Patterson House was added to the National Register of Historic Places in 1985.GeographyAccording to the United States Census Bureau, the township has a total area of 97.4sqmi, of which, 95.8sqmi of it is land and 1.5sqmi of it (1.56%) is water.The township contains the following communities: Andrico, Andrico No. 2, Atlantic, Bairdstown, Bradenville, Brenizer, Hillside, Loyalhanna, Cokeville Heights, Cooperstown, Kingston, Mannitto Haven, McChesneytown, Millwood, New Derry, Osburn, Pandora, Peanut, Seger, Snydertown, Superior, Torrance, and West Derry.The villages of Livermore and Cokeville no longer exist, relocated as part of the Conemaugh Dam Flood Control project.
