Clay is located in north Alabama. Clay is part of Jefferson County. Clay has 9.93 square miles of land area and 0.06 square miles of water area. As of 2010-2014, the total Clay population is 9,699, which has grown 96.06% since 2000. The population growth rate is much higher than the state average rate of 8.33% and is much higher than the national average rate of 11.61%. Clay median household income is $67,630 in 2010-2014 and has grown by 10.79% since 2000. The income growth rate is much lower than the state average rate of 27.47% and is much lower than the national average rate of 27.36%. Clay median house value is $159,300 in 2010-2014 and has grown by 37.21% since 2000. The house value growth rate is lower than the state average rate of 45.48% 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 Clay is close to the state average in quality. The Clay area code is 205.