Derry Flag

Derry

County Seat:
No
Area (mi²):
0.772
State:
Pennsylvania

Derry is a borough located in Westmoreland County, Pennsylvania. Derry has a 2025 population of 2,552. Derry is currently declining at a rate of -0.66% annually and its population has decreased by -3.22% since the most recent census, which recorded a population of 2,637 in 2020.

The average household income in Derry is $65,591 with a poverty rate of 16.71%.The median age in Derry is 42.1 years: 37.4 years for males, and 46.7 years for females.

2.6K
Total Population
3,306
Density (mi²)
-17 -0.66%
Growth

Derry Population

Derry Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Derry includes 95.45% White, and smaller percentages for Black or African American, Two or more races, other race and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White2,49795.45%
Black or African American742.83%
Two or more races331.26%
Other race120.46%

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 $46,223. Household income levels show a median of $49,051. The poverty rate stands at 16.71%.

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$91,680-
Families$71,136$80,605
Households$49,051$65,591
Non Families$33,933$47,173

$46,223

Average Income

$49,051

Median Household Income

16.71%

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)