Duncannon is located close to the center of Pennsylvania. Duncannon is between the Perry, Dauphin county. Duncannon has 0.41 square miles of land area and has no water area. As of 2010-2014, the total Duncannon population is 1,681, which has grown 11.47% since 2000. The population growth rate is much higher than the state average rate of 3.89% and is about the same as the national average rate of 11.61%. Duncannon median household income is $44,853 in 2010-2014 and has grown by 35.92% since 2000. The income growth rate is higher than the state average rate of 32.44% and is higher than the national average rate of 27.36%. Duncannon median house value is $110,700 in 2010-2014 and has grown by 43.95% 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 Duncannon is worse than the state average in quality. The Duncannon area code is 717.