| Official Name: | Derry Township, Mountour County, Pennsylvania |
| Settlement Type: | Township |
| Mapsize: | 250x200px |
| Image Map1: | Map of Pennsylvania highlighting Montour County.svg |
| Mapsize1: | 250x200px |
| Map Caption1: | Map of Montour County, Pennsylvania |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Montour |
| Established Title: | Settled |
| Established Date: | 1775 |
| Established Title1: | Incorporated |
| Established Date1: | 1786 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 42.38 |
| Area Land Km2: | 41.60 |
| Area Water Km2: | 0.78 |
| Area Total Sq Mi: | 16.36 |
| Area Land Sq Mi: | 16.06 |
| Area Water Sq Mi: | 0.30 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 1090 |
| Population Density Km2: | 27.14 |
| Population Density Sq Mi: | 70.28 |
| Pop Est As Of: | 2021 |
| Population Est: | 1082 |
| Blank Name: | FIPS code |
| Blank Info: | 42-093-18952 |
Derry Township is a township in Montour County, Pennsylvania, United States.
It was named after the city of Derry in Northern Ireland.
According to the U.S. Census Bureau, the township has a total area of 16.4sqmi, 16.1sqmi of which is land and 0.2sqmi (1.47%) of which is water.
As of the census[3] of 2000, there were 1,215 people, 448 households, and 332 families residing in the township. The population density was 75.4sp=usNaNsp=us. There were 494 housing units at an average density of 30.7sp=usNaNsp=us. The racial makeup of the township was 97.45% White, 1.89% African American, 0.16% Asian, and 0.49% from two or more races.
There were 448 households, out of which 36.4% had children under the age of 18 living with them, 60.5% were married couples living together, 9.8% had a female householder with no husband present, and 25.7% were non-families. 21.2% of all households were made up of individuals, and 7.8% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.14.
In the township the population was spread out, with 29.5% under the age of 18, 7.8% from 18 to 24, 29.4% from 25 to 44, 23.1% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 103.2 males. For every 100 females age 18 and over, there were 96.6 males.
The median income for a household in the township was $33,696, and the median income for a family was $37,426. Males had a median income of $31,100 versus $20,341 for females. The per capita income for the township was $15,161. About 6.6% of families and 13.9% of the population were below the poverty line, including 24.5% of those under age 18 and 4.9% of those age 65 or over.