Decatur county is located in south Iowa. Decatur county has 531.88 square miles of land area and 1.60 square miles of water area. As of 2010-2014, the total Decatur county population is 8,286, which has shrunk 4.64% 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%. Decatur county median household income is $38,275 in 2010-2014 and has grown by 39.98% since 2000. The income growth rate is higher than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Decatur county median house value is $81,700 in 2010-2014 and has grown by 79.96% since 2000. The house value growth rate is much higher than the state average rate of 53.09% and is much 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 Decatur county is much better than the state average in quality. The Decatur county area code is 641.
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