Hummelstown is located in southeast Pennsylvania. Hummelstown is part of Dauphin County. Hummelstown has 1.23 square miles of land area and 0.08 square miles of water area. As of 2010-2014, the total Hummelstown population is 4,544, which has grown 4.22% since 2000. The population growth rate is about the same as the state average rate of 3.89% and is much lower than the national average rate of 11.61%. Hummelstown median household income is $49,667 in 2010-2014 and has grown by 19.32% since 2000. The income growth rate is much lower than the state average rate of 32.44% and is lower than the national average rate of 27.36%. Hummelstown median house value is $177,700 in 2010-2014 and has grown by 78.77% 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 Hummelstown is better than the state average in quality. The Hummelstown area code is 717.