Allentown is located close to the center of New Jersey. Allentown is between the Monmouth, Burlington, Mercer county. Allentown has 0.60 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Allentown population is 1,828, which has shrunk 2.87% since 2000. The population growth rate is much lower than the state average rate of 5.47% and is much lower than the national average rate of 11.61%. Allentown median household income is $102,250 in 2010-2014 and has grown by 43.62% since 2000. The income growth rate is higher than the state average rate of 30.67% and is much higher than the national average rate of 27.36%. Allentown median house value is $313,000 in 2010-2014 and has grown by 87.31% since 2000. The house value growth rate is about the same as the state average rate of 87.30% 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 Allentown is better than the state average in quality. The Allentown area code is 609.