Delaware county is located in east Iowa. Delaware county has 577.76 square miles of land area and 1.19 square miles of water area. As of 2010-2014, the total Delaware county population is 17,578, which has shrunk 4.49% 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 county median household income is $54,801 in 2010-2014 and has grown by 47.44% since 2000. The income growth rate is higher than the state average rate of 33.56% and is much higher than the national average rate of 27.36%. Delaware county median house value is $123,000 in 2010-2014 and has grown by 54.33% 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 county is much better than the state average in quality. The Delaware county area codes are 319, 563.
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