Derry township

County:: Westmoreland County
County Seat:: No
Area (mi²):: 16.154
State:: Pennsylvania

Derry township is located in Westmoreland County, Pennsylvania. Derry township has a 2025 population of 1,038. Derry township is currently declining at a rate of -1.42% annually and its population has decreased by -5.03% since the most recent census, which recorded a population of 1,093 in 2020.

The average household income in Derry township is $100,603 with a poverty rate of 13.23%.The median age in Derry township is 33.8 years: 29.5 years for males, and 35.7 years for females.

Demographics

The racial composition of Derry township includes 98.41% White, and smaller percentages for Two or more races, Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,111	98.41%
Two or more races	17	1.51%
Asian	1	0.09%

Derry township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Derry township's average per capita income is $44,792. Household income levels show a median of $77,083. The poverty rate stands at 13.23%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$83,250	-
Households	$77,083	$100,603
Families	$73,750	$82,815
Non Families	-	$145,224

$44,792

Average Income

$77,083

Median Household Income

13.23%

Poverty Rate