Clayton is located in northeast New Mexico. Clayton is part of Union County. Clayton has 8.12 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Clayton population is 2,387, which has shrunk 5.43% since 2000. The population growth rate is much lower than the state average rate of 14.35% and is much lower than the national average rate of 11.61%. Clayton median household income is $31,979 in 2010-2014 and has grown by 24.92% since 2000. The income growth rate is lower than the state average rate of 31.74% and is lower than the national average rate of 27.36%. Clayton median house value is $75,500 in 2010-2014 and has grown by 53.77% since 2000. The house value growth rate is higher than the state average rate of 47.36% 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 Clayton is much better than the state average in quality. The Clayton area code is 575.