South Fayette Flag

South Fayette

County Seat:
No
Area (mi²):
20.301
State:
Pennsylvania

South Fayette is located in Allegheny County, Pennsylvania. South Fayette has a 2025 population of 18,665 . South Fayette is currently growing at a rate of 0.43% annually and its population has increased by 1.71% since the most recent census, which recorded a population of 18,351 in 2020.

The average household income in South Fayette is $154,312 with a poverty rate of 3.26%. The median age in South Fayette is 41.4 years: 40.4 years for males, and 43.2 years for females. For every 100 females there are 95.2 males.

18.7K
Total Population
919
Density (mi²)
79 0.43%
Growth

South Fayette Population

South Fayette Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of South Fayette includes 81.31% White, 12.07% Asian, and smaller percentages for Black or African American, other race, Native American and multiracial populations.

Population by Race

White (81.31%)

Asian (12.07%)

Two or more races (3.48%)

Black or African American (2.96%)

Other race (0.16%)

Native American (0.02%)

Race
Population
Percentage (of total)
White14,90381.31%
Asian2,21312.07%
Two or more races6373.48%
Black or African American5432.96%
Other race290.16%
Native American30.02%

South Fayette Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Fayette's average per capita income is $72,332. Household income levels show a median of $121,737. The poverty rate stands at 3.26%.

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$162,050-
Families$150,417$176,476
Households$121,737$154,312
Non Families$60,400$93,355

$72,332

Average Income

$121,737

Median Household Income

3.26%

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)