Lockhart is located close to the center of Texas. Lockhart is part of Caldwell County. Lockhart has 15.57 square miles of land area and 0.02 square miles of water area. As of 2010-2014, the total Lockhart population is 12,966, which has grown 11.63% since 2000. The population growth rate is much lower than the state average rate of 25.13% and is about the same as the national average rate of 11.61%. Lockhart median household income is $47,859 in 2010-2014 and has grown by 33.82% 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%. Lockhart median house value is $108,900 in 2010-2014 and has grown by 55.57% since 2000. The house value growth rate is lower than 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 Lockhart is close to the state average in quality. The Lockhart area code is 512.