West Mifflin

County:: Allegheny County
County Seat:: No
Area (mi²):: 14.218
State:: Pennsylvania

West Mifflin is a borough located in Allegheny County, Pennsylvania. West Mifflin has a 2025 population of 18,483. West Mifflin is currently declining at a rate of -1.16% annually and its population has decreased by -5.53% since the most recent census, which recorded a population of 19,565 in 2020.

The average household income in West Mifflin is $82,130 with a poverty rate of 11.85%.The median age in West Mifflin is 44.7 years: 41.3 years for males, and 48.9 years for females.

Demographics

The racial composition of West Mifflin includes 81.92% White, 10.07% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	15,841	81.92%
Black or African American	1,948	10.07%
Two or more races	1,295	6.7%
Asian	189	0.98%
Other race	38	0.2%
Native American	27	0.14%

West Mifflin Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

West Mifflin's average per capita income is $50,195. Household income levels show a median of $70,335. The poverty rate stands at 11.85%.

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	$98,814	-
Families	$92,747	$99,256
Households	$70,335	$82,130
Non Families	$41,727	$55,092

$50,195

Average Income

$70,335

Median Household Income

11.85%

Poverty Rate