Derry Township, Westmoreland County, Pennsylvania

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Derry Township,
Westmoreland County,
Keystone State Park is in Derry Township
Keystone State Park is in Derry Township
Map of Westmoreland County, Pennsylvania Highlighting Derry Township
Map of Westmoreland County, Pennsylvania Highlighting Derry Township
Map of Pennsylvania highlighting Westmoreland County
Map of Pennsylvania highlighting
Westmoreland County
Country United States
State Pennsylvania
County Westmoreland
Settled 1763
Incorporated 1775
Named for Derry
 • Total 96.28 sq mi (249.37 km2)
 • Land 95.09 sq mi (246.29 km2)
 • Water 1.19 sq mi (3.08 km2)
Population (2010)
 • Total 14,502
 • Estimate (2016)[2] 14,108
 • Density 148.36/sq mi (57.28/km2)
Time zone Eastern (EST) (UTC-5)
 • Summer (DST) EDT (UTC-4)
FIPS code 42-129-18968

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,[needs update] the township population was 14,726.

It was named after the city of Derry by Scotch-Irish settlers.[citation needed]


Keystone State Park was established in 1945.

The Samuel Patterson House was added to the National Register of Historic Places in 1985.[3]


According to the United States Census Bureau, the township has a total area of 97.4 square miles (252 km2), of which, 95.8 square miles (248 km2) of it is land and 1.5 square miles (3.9 km2) of it (1.56%) is water.

The township contains the following communities:[citation needed] 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.


Historical population
Census Pop.
2010 14,502
Est. 2016 14,108 [2] −2.7%
U.S. Decennial Census[4]

As of the census[5] of 2000, there were 14,726 people, 5,716 households, and 4,201 families residing in the township. The population density was 153.6 people per square mile (59.3/km²). There were 6,200 housing units at an average density of 64.7/sq mi (25.0/km²). The racial makeup of the township was 98.21% White, 1.18% African American, 0.14% Asian, 0.03% Native American, 0.01% Pacific Islander, 0.05% from other races, and 0.37% from two or more races. Hispanic or Latino of any race were 0.47% of the population.

There were 5,716 households out of which 29.8% had children under the age of 18 living with them, 58.9% were married couples living together, 10.1% had a female householder with no husband present, and 26.5% were non-families. 23.2% of all households were made up of individuals and 11.0% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 2.91.

In the township the population was spread out with 22.2% under the age of 18, 6.7% from 18 to 24, 28.3% from 25 to 44, 26.0% from 45 to 64, and 16.7% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 97.9 males. For every 100 females age 18 and over, there were 94.8 males.

The median income for a household in the township was $34,208, and the median income for a family was $40,878. Males had a median income of $32,589 versus $22,147 for females. The per capita income for the township was $16,425. About 8.3% of families and 10.1% of the population were below the poverty line, including 14.5% of those under age 18 and 5.5% of those age 65 or over.


  1. ^ "2016 U.S. Gazetteer Files". United States Census Bureau. Retrieved Aug 14, 2017. 
  2. ^ a b "Population and Housing Unit Estimates". Retrieved June 9, 2017. 
  3. ^ National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service. 
  4. ^ "Census of Population and Housing". Retrieved June 4, 2016. 
  5. ^ "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2008-01-31. 

External links[edit]

Coordinates: 40°23′00″N 79°13′59″W / 40.38333°N 79.23306°W / 40.38333; -79.23306