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 2026 population of 18,567. West Mifflin is currently declining at a rate of -0.89% annually and its population has decreased by -5.13% since the most recent census, which recorded a population of 19,571 in 2020.

The median household income in West Mifflin is $76,563 with a poverty rate of 11.17%. The median age in West Mifflin is 43.4 years: 40.1 years for males, and 47.6 years for females. For every 100 females there are 103.5 males.

18.6K
Total Population
1,306
Density (mi²)
-167 -0.89%
Growth

West Mifflin Population

West Mifflin Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202618,567-167-0.89%
202518,734-168-0.89%
202418,902-93-0.49%
202318,995-160-0.84%
202219,155-231-1.19%
202119,386-211-1.08%
202019,571-131-0.66%
201919,702140.07%
201819,688-113-0.57%
201719,801-149-0.75%
201619,950-118-0.59%
201520,068-149-0.74%
201420,217-77-0.38%
201320,294-22-0.11%
201220,316-7-0.03%
201120,323140.07%
201020,309-4-0.02%
200022,464-1,180-4.99%
199023,644-2,678-10.17%
198026,322-1,748-6.23%
197028,0707812.86%
196027,2899,30451.73%
195017,98500%

Median Age

Overall: 43.4 years
Female: 47.6 years
Male: 40.1 years

West Mifflin Adults

There are 15,121 adults, (3,819 of whom are seniors) in West Mifflin.

Sex Ratio

Female: 9,428 (49.1%)
Male: 9,762 (50.9%)

Demographics

The racial composition of West Mifflin includes 84.7% White, 8.8% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White16,25384.7%
Black or African American1,6888.8%
Two or more races1,0105.26%
Asian1760.92%
Other race350.18%
Native American280.15%
Race
Population ↓
Percentage (of total)
Black or African American2841.48%
White1690.88%
Two or more races920.48%
Other race350.18%
Native American230.12%
Race
Population ↓
Percentage (of total)
White16,08483.81%
Black or African American1,4047.32%
Two or more races9184.78%
Asian1760.92%
Native American50.03%

West Mifflin Marital Status

Economics and Income Statistics

West Mifflin 's average per capita income is $52,105. Household income levels show a median of $76,563. The poverty rate stands at 11.17%.

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$103,684-
Families$96,402$104,119
Households$76,563$86,006
Non Families$45,907$59,640

$52,105

Average Income

$76,563

Median Household Income

11.17%

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)