Delaware is located in east Iowa. Delaware is part of Delaware County. Delaware has 0.80 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Delaware population is 176, which has shrunk 6.38% since 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%. Delaware median household income is $48,182 in 2010-2014 and has grown by 30.66% since 2000. The income growth rate is lower than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Delaware median house value is $82,500 in 2010-2014 and has grown by 53.35% since 2000. The house value growth rate is about the same as the state average rate of 53.09% and is higher 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 much better than the state average in quality. The Delaware area code is 319.