South Fayette township

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

South Fayette township is located in Allegheny County, Pennsylvania. South Fayette township has a 2025 population of 18,446. South Fayette township is currently growing at a rate of 0.01% annually and its population has increased by 0.51% since the most recent census, which recorded a population of 18,352 in 2020.

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

Demographics

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

Population by Race

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	14,903	81.31%
Asian	2,213	12.07%
Two or more races	637	3.48%
Black or African American	543	2.96%
Other race	29	0.16%
Native American	3	0.02%
Native Hawaiian or Pacific Islander	0	0%

South Fayette township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Fayette township'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