Clayton is located in east Iowa. Clayton is part of Clayton County. Clayton has 0.49 square miles of land area and has no water area. As of 2010-2014, the total Clayton population is 37, which has shrunk 32.73% 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%. Clayton median household income is $46,250 in 2010-2014 and has grown by 48.00% 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%. Clayton median house value is $165,600 in 2010-2014 and has grown by 104.44% 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 Clayton is much better than the state average in quality.