Murphy is located in northeast Texas. Murphy is part of Collin County. Murphy has 5.65 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Murphy population is 19,154, which has grown 518.07% since 2000. The population growth rate is much higher than the state average rate of 25.13% and is much higher than the national average rate of 11.61%. Murphy median household income is $121,360 in 2010-2014 and has grown by 45.26% since 2000. The income growth rate is higher than the state average rate of 31.68% and is much higher than the national average rate of 27.36%. Murphy median house value is $273,900 in 2010-2014 and has grown by 61.40% since 2000. The house value growth rate is about the same as the state average rate of 59.27% 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 Murphy is much better than the state average in quality.