Derry Flag

Derry

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

Derry is located in Westmoreland County, Pennsylvania. Derry has a 2025 population of 25,283. Derry is currently growing at a rate of 0.41% annually and its population has increased by 2.24% since the most recent census, which recorded a population of 24,728 in 2020.

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

25.3K
Total Population
932
Density (mi²)
102 0.41%
Growth

Derry Population

Derry Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Derry 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

White (77.0%)

Asian (10.0%)

Other race (5.6%)

Two or more races (4.7%)

Black or African American (2.6%)

Native American (0.1%)

Race
Population
Percentage (of total)
White19,13276.97%
Asian2,49210.02%
Other race1,3995.63%
Two or more races1,1624.67%
Black or African American6542.63%
Native American190.08%

Derry Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Derry'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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)