Petersburg is located close to the center of Pennsylvania. Petersburg is part of Huntingdon County. Petersburg has 0.33 square miles of land area and has no water area. As of 2010-2014, the total Petersburg population is 552, which has grown 21.32% since 2000. The population growth rate is much higher than the state average rate of 3.89% and is much higher than the national average rate of 11.61%. Petersburg median household income is $35,000 in 2010-2014 and has grown by 2.90% since 2000. The income growth rate is much lower than the state average rate of 32.44% and is much lower than the national average rate of 27.36%. Petersburg median house value is $80,200 in 2010-2014 and has grown by 39.48% since 2000. The house value growth rate is much lower than the state average rate of 70.00% and is 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 Petersburg is close to the state average in quality. The Petersburg area code is 814.