Mckinney is located in northeast Texas. Mckinney is part of Collin County. Mckinney has 62.21 square miles of land area and 0.67 square miles of water area. As of 2010-2014, the total Mckinney population is 144,066, which has grown 164.98% 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%. Mckinney median household income is $82,988 in 2010-2014 and has grown by 30.97% since 2000. The income growth rate is about the same as the state average rate of 31.68% and is higher than the national average rate of 27.36%. Mckinney median house value is $192,900 in 2010-2014 and has grown by 30.25% since 2000. The house value growth rate is much lower than the state average rate of 59.27% and is much 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 Mckinney is much better than the state average in quality. The Mckinney area codes are 214, 469, 972.