Delaware is located close to the center of Ohio. Delaware is between the Delaware, Union county. Delaware has 18.95 square miles of land area and 0.12 square miles of water area. As of 2010-2014, the total Delaware population is 36,188, which has grown 43.36% since 2000. The population growth rate is much higher than the state average rate of 1.83% and is much higher than the national average rate of 11.61%. Delaware median household income is $54,683 in 2010-2014 and has grown by 18.80% since 2000. The income growth rate is about the same as the state average rate of 19.27% and is lower than the national average rate of 27.36%. Delaware median house value is $157,200 in 2010-2014 and has grown by 23.97% since 2000. The house value growth rate is about the same as the state average rate of 24.98% 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 Delaware is close to the state average in quality. The Delaware area code is 740.