Chambersburg is located in south Pennsylvania. Chambersburg is part of Franklin County. Chambersburg has 6.92 square miles of land area and has no water area. As of 2010-2014, the total Chambersburg population is 20,430, which has grown 14.38% 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%. Chambersburg median household income is $40,936 in 2010-2014 and has grown by 26.60% since 2000. The income growth rate is lower than the state average rate of 32.44% and is about the same as the national average rate of 27.36%. Chambersburg median house value is $158,200 in 2010-2014 and has grown by 82.05% since 2000. The house value growth rate is higher than the state average rate of 70.00% and is much higher 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 Chambersburg is worse than the state average in quality. The Chambersburg area code is 717.