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 2026 population of 170. Petrolia is currently declining at a rate of -0.58% annually and its population has decreased by -5.03% since the most recent census, which recorded a population of 179 in 2020.

The median household income in Petrolia is $56,250 with a poverty rate of 8.6%. The median age in Petrolia is 50 years: 47.4 years for males, and 53.5 years for females. For every 100 females there are 95.8 males.

170
Total Population
431
Density (mi²)
-1 -0.58%
Growth

Petrolia Population

Petrolia Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026170-1-0.58%
2025171-2-1.16%
2024173-1-0.57%
2023174-1-0.57%
2022175-2-1.13%
2021177-2-1.12%
202017900%
2019198-2-1%
2018200-1-0.5%
2017201-1-0.5%
2016202-2-0.98%
2015204-1-0.49%
2014205-5-2.38%
2013210-1-0.47%
2012211-1-0.47%
201121200%
201021300%

Median Age

Overall: 50 years
Female: 53.5 years
Male: 47.4 years

Petrolia Adults

There are 164 adults, (43 of whom are seniors) in Petrolia.

Sex Ratio

Female: 95 (51.1%)
Male: 91 (48.9%)

Demographics

The racial composition of Petrolia includes 87.1% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White16287.1%
Two or more races2412.9%
Race
Population ↓
Percentage (of total)
Two or more races10.54%
Race
Population ↓
Percentage (of total)
White16287.1%
Two or more races2312.37%

Petrolia Marital Status

Economics and Income Statistics

Petrolia 's average per capita income is $36,563. Household income levels show a median of $56,250. The poverty rate stands at 8.6%.

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$73,214$78,113
Married Families$72,857-
Households$56,250$64,108
Non Families$42,143$50,048

$36,563

Average Income

$56,250

Median Household Income

8.6%

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)