Clark

County:: Mercer County
County Seat:: No
Area (mi²):: 3.011
State:: Pennsylvania

Clark is a borough located in Mercer County, Pennsylvania. Clark has a 2025 population of 553. Clark is currently declining at a rate of -0.72% annually and its population has decreased by -3.83% since the most recent census, which recorded a population of 575 in 2020.

The average household income in Clark is $108,254 with a poverty rate of 6.23%. The median age in Clark is 45.9 years: 51.6 years for males, and 43.5 years for females.

Demographics

The racial composition of Clark includes 98.7% White, and smaller percentages for Black or African American, Two or more races, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	609	98.7%
Black or African American	4	0.65%
Two or more races	4	0.65%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Clark Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Clark's average per capita income is $56,389. Household income levels show a median of $68,250. The poverty rate stands at 6.23%.

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
Families	$100,536	$131,695
Married Families	$91,250	-
Households	$68,250	$108,254
Non Families	$45,278	$63,891

$56,389

Average Income

$68,250

Median Household Income

6.23%

Poverty Rate