Derry township

County:: Westmoreland County
County Seat:: No
Area (mi²):: 27.133
State:: Pennsylvania

Derry township is located in Westmoreland County, Pennsylvania. Derry township has a 2025 population of 24,832. Derry township is currently declining at a rate of -0.23% annually but its population has increased by 0.42% since the most recent census, which recorded a population of 24,729 in 2020.

The average household income in Derry township is $139,679 with a poverty rate of 8.92%.The median age in Derry township is 41.9 years: 39.3 years for males, and 44.1 years for females.

Demographics

The racial composition of Derry township includes 76.97% White, 10.02% Asian, 5.63% other race, and smaller percentages for Black or African American, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	19,132	76.97%
Asian	2,492	10.02%
Other race	1,399	5.63%
Two or more races	1,162	4.67%
Black or African American	654	2.63%
Native American	19	0.08%

Derry township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Derry township's average per capita income is $57,009. Household income levels show a median of $93,564. The poverty rate stands at 8.92%.

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	$155,825	-
Families	$134,567	$178,060
Households	$93,564	$139,679
Non Families	$61,856	$76,368

$57,009

Average Income

$93,564

Median Household Income

8.92%

Poverty Rate