Holtville is located in southeast California. Holtville is part of Imperial County. Holtville has 1.15 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Holtville population is 6,067, which has grown 8.11% since 2000. The population growth rate is lower than the state average rate of 12.39% and is lower than the national average rate of 11.61%. Holtville median household income is $29,628 in 2010-2014 and has has shrunk by 18.42% since 2000. The income growth rate is much lower than the state average rate of 29.47% and is much lower than the national average rate of 27.36%. Holtville median house value is $136,600 in 2010-2014 and has shrunk by -46.10% since 2000. The house value growth rate is much lower than the state average rate of 75.60% and is about the same as 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 Holtville is close to the state average in quality. The Holtville area code is 760.