Deerfield is located in northeast Illinois. Deerfield is between the Lake, Cook county. Deerfield has 5.58 square miles of land area and 0.04 square miles of water area. As of 2010-2014, the total Deerfield population is 18,476, which has grown 0.30% since 2000. The population growth rate is lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Deerfield median household income is $135,754 in 2010-2014 and has grown by 26.64% since 2000. The income growth rate is higher than the state average rate of 22.70% and is about the same as the national average rate of 27.36%. Deerfield median house value is $494,600 in 2010-2014 and has grown by 44.24% since 2000. The house value growth rate is higher than the state average rate of 34.33% 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 Deerfield is much better than the state average in quality. The Deerfield area codes are 224, 847.