Mars

County:: Butler County
County Seat:: No
Area (mi²):: 0.47
State:: Pennsylvania

Mars is a borough located in Butler County, Pennsylvania. Mars has a 2025 population of 1,400. Mars is currently declining at a rate of -0.85% annually and its population has decreased by -4.24% since the most recent census, which recorded a population of 1,462 in 2020.

The average household income in Mars is $72,163 with a poverty rate of 12.33%.The median age in Mars is 53.9 years: 51.6 years for males, and 59.2 years for females.

Demographics

The racial composition of Mars includes 91.31% White, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,146	91.31%
Two or more races	100	7.97%
Other race	7	0.56%
Black or African American	2	0.16%

Mars Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mars' average per capita income is $49,803. Household income levels show a median of $58,000. The poverty rate stands at 12.33%.

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	$119,688	-
Families	$89,464	$114,036
Households	$58,000	$72,163
Non Families	$38,542	$40,957

$49,803

Average Income

$58,000

Median Household Income

12.33%

Poverty Rate