Petrolia Flag

Petrolia

County:
Butler County
County Seat:
No
Area (mi²):
0.395
State:
Pennsylvania

Petrolia is a borough located in Butler County, Pennsylvania. Petrolia has a 2025 population of 171. Petrolia is currently declining at a rate of -1.16% annually and its population has decreased by -4.47% since the most recent census, which recorded a population of 179 in 2020.

The average household income in Petrolia is $61,136 with a poverty rate of 4.29%. The median age in Petrolia is 50.9 years: 46.5 years for males, and 56.5 years for females.

171
Total Population
433
Density (mi²)
-2 -1.16%
Growth

Petrolia Population

Petrolia Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Petrolia includes 99.39% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (99.4%)

Two or more races (0.6%)

Race
Population
Percentage (of total)
White16299.39%
Two or more races10.61%

Petrolia Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Petrolia's average per capita income is $34,792. Household income levels show a median of $50,000. The poverty rate stands at 4.29%.

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$67,250$71,597
Married Families$66,750-
Households$50,000$61,136
Non Families$43,125$50,732

$34,792

Average Income

$50,000

Median Household Income

4.29%

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)