West Mifflin Flag

West Mifflin

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 18,734 . West Mifflin is currently declining at a rate of -0.89% annually and its population has decreased by -4.28% since the most recent census, which recorded a population of 19,571 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. For every 100 females there are 98.4 males.

18.7K
Total Population
1,318
Density (mi²)
-168 -0.89%
Growth

West Mifflin Population

West Mifflin Population

Data after 2023 is projected based on recent change

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

White (81.92%)

Black or African American (10.07%)

Two or more races (6.7%)

Asian (0.98%)

Other race (0.2%)

Native American (0.14%)

Race
Population
Percentage (of total)
White15,84181.92%
Black or African American1,94810.07%
Two or more races1,2956.7%
Asian1890.98%
Other race380.2%
Native American270.14%

West Mifflin Marital Status

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

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

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)