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, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	1,111	98.41%
Two or more races	17	1.51%
Asian	1	0.09%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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