Naperville is located in northeast Illinois. Naperville is between the Dupage, Will county. Naperville has 38.77 square miles of land area and 0.55 square miles of water area. As of 2010-2014, the total Naperville population is 144,108, which has grown 12.27% since 2000. The population growth rate is much higher than the state average rate of 3.62% and is higher than the national average rate of 11.61%. Naperville median household income is $109,512 in 2010-2014 and has grown by 23.36% since 2000. The income growth rate is about the same as the state average rate of 22.70% and is lower than the national average rate of 27.36%. Naperville median house value is $377,900 in 2010-2014 and has grown by 48.66% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is about the same as 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 Naperville is much better than the state average in quality. The Naperville area code is 630.