Irwin

County:: Westmoreland County
County Seat:: No
Area (mi²):: 0.837
State:: Pennsylvania

Irwin is a borough located in Westmoreland County, Pennsylvania. Irwin has a 2025 population of 3,765. Irwin is currently declining at a rate of -0.63% annually and its population has decreased by -3.06% since the most recent census, which recorded a population of 3,884 in 2020.

The average household income in Irwin is $71,495 with a poverty rate of 16.8%. The median age in Irwin is 38.5 years: 34.5 years for males, and 41.8 years for females.

Demographics

The racial composition of Irwin includes 91.95% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,551	91.95%
Two or more races	206	5.33%
Other race	65	1.68%
Black or African American	40	1.04%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Irwin Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Irwin's average per capita income is $50,629. Household income levels show a median of $60,747. The poverty rate stands at 16.8%.

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	$97,719	-
Families	$78,500	$92,246
Households	$60,747	$71,495
Non Families	$53,438	$55,429

$50,629

Average Income

$60,747

Median Household Income

16.8%

Poverty Rate