Petrolia is located in west Pennsylvania. Petrolia is part of Butler County. Petrolia has 0.40 square miles of land area and has no water area. As of 2010-2014, the total Petrolia population is 254, which has grown 16.51% since 2000. The population growth rate is much higher than the state average rate of 3.89% and is higher than the national average rate of 11.61%. Petrolia median household income is $48,000 in 2010-2014 and has grown by 60.96% since 2000. The income growth rate is much higher than the state average rate of 32.44% and is much higher than the national average rate of 27.36%. Petrolia median house value is $52,900 in 2010-2014 and has grown by -10.64% since 2000. The house value growth rate is much lower than the state average rate of 70.00% and is much lower than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Petrolia is better than the state average in quality. The Petrolia area code is 724.