Killeen is located close to the center of Texas. Killeen is between the Bell, Coryell, Burnet county. Killeen has 53.58 square miles of land area and 0.67 square miles of water area. As of 2010-2014, the total Killeen population is 134,030, which has grown 54.22% 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%. Killeen median household income is $48,283 in 2010-2014 and has grown by 40.11% since 2000. The income growth rate is higher than the state average rate of 31.68% and is higher than the national average rate of 27.36%. Killeen median house value is $116,400 in 2010-2014 and has grown by 57.94% 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 Killeen is worse than the state average in quality. The Killeen area code is 254.