Petrolia, Pennsylvania

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{borough, population, unit_pref}
{household, population, female}

Petrolia is a borough in Butler County, Pennsylvania, United States. The population was 218 at the 2000 census.



Petrolia is located at 41°1′5″N 79°43′6″W / 41.01806°N 79.71833°W / 41.01806; -79.71833 (41.017964, -79.718204)[1].

According to the United States Census Bureau, the borough has a total area of 0.4 square miles (1.0 km²), all of it land.


As of the census[2] of 2000, there were 218 people, 89 households, and 64 families residing in the borough. The population density was 543.7 people per square mile (210.4/km²). There were 99 housing units at an average density of 246.9/sq mi (95.6/km²). The racial makeup of the borough was 100.00% White.

There were 89 households out of which 29.2% had children under the age of 18 living with them, 53.9% were married couples living together, 11.2% had a female householder with no husband present, and 27.0% were non-families. 20.2% of all households were made up of individuals and 6.7% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.80.

In the borough the population was spread out with 21.1% under the age of 18, 8.3% from 18 to 24, 34.4% from 25 to 44, 23.9% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 89.6 males. For every 100 females age 18 and over, there were 93.3 males.

The median income for a household in the borough was $29,821, and the median income for a family was $37,708. Males had a median income of $31,875 versus $23,750 for females. The per capita income for the borough was $17,358. About 8.5% of families and 14.5% of the population were below the poverty line, including 23.1% of those under the age of eighteen and none of those sixty five or over.



Petrolia is the site of a toxic spill accident involving oleum on October 11, 2008, resulting in the evacuation of as many as 2,500 people.[3]


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