Clayton is located in west Illinois. Clayton is between the Adams, Brown county. Clayton has 0.87 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Clayton population is 651, which has shrunk 27.99% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Clayton median household income is $33,906 in 2010-2014 and has grown by 46.93% since 2000. The income growth rate is much higher than the state average rate of 22.70% and is much higher than the national average rate of 27.36%. Clayton median house value is $54,000 in 2010-2014 and has grown by 42.11% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is 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 Clayton is close to the state average in quality. The Clayton area code is 217.