Dekalb is located in north Illinois. Dekalb is part of Dekalb County. Dekalb has 14.65 square miles of land area and 0.16 square miles of water area. As of 2010-2014, the total Dekalb population is 44,092, which has grown 13.00% 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%. Dekalb median household income is $38,357 in 2010-2014 and has grown by 9.11% since 2000. The income growth rate is much lower than the state average rate of 22.70% and is much lower than the national average rate of 27.36%. Dekalb median house value is $162,200 in 2010-2014 and has grown by 24.58% since 2000. The house value growth rate is lower than the state average rate of 34.33% and is much 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 Dekalb is close to the state average in quality. The Dekalb area code is 815.