Delavan is located close to the center of Illinois. Delavan is part of Tazewell County. Delavan has 0.71 square miles of land area and has no water area. As of 2010-2014, the total Delavan population is 1,543, which has shrunk 15.45% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Delavan median household income is $48,333 in 2010-2014 and has grown by 23.73% 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%. Delavan median house value is $100,200 in 2010-2014 and has grown by 40.53% 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 Delavan is better than the state average in quality. The Delavan area code is 309.