Arnold

County:: Allegheny County
County Seat:: No
Area (mi²):: 0.732
State:: Pennsylvania

Arnold is a city located in Allegheny County, Pennsylvania. Arnold has a 2025 population of 4,610. Arnold is currently declining at a rate of -0.71% annually and its population has decreased by -3.44% since the most recent census, which recorded a population of 4,774 in 2020.

The average household income in Arnold is $59,113 with a poverty rate of 25.04%.The median age in Arnold is 39.1 years: 34.2 years for males, and 43.8 years for females.

Demographics

The racial composition of Arnold includes 67.71% White, 24.65% Black or African American, and smaller percentages for Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,208	67.71%
Black or African American	1,168	24.65%
Two or more races	307	6.48%
Native American	55	1.16%

Arnold Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Arnold's average per capita income is $36,017. Household income levels show a median of $48,119. The poverty rate stands at 25.04%.

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	$75,893	-
Families	$73,013	$80,035
Households	$48,119	$59,113
Non Families	$26,811	$34,122

$36,017

Average Income

$48,119

Median Household Income

25.04%

Poverty Rate