Slidell is located in east Louisiana. Slidell is part of Saint Tammany County. Slidell has 14.84 square miles of land area and 0.36 square miles of water area. As of 2010-2014, the total Slidell population is 27,372, which has grown 6.53% since 2000. The population growth rate is higher than the state average rate of 2.96% and is much lower than the national average rate of 11.61%. Slidell median household income is $50,432 in 2010-2014 and has grown by 17.68% since 2000. The income growth rate is much lower than the state average rate of 38.15% and is much lower than the national average rate of 27.36%. Slidell median house value is $153,900 in 2010-2014 and has grown by 68.01% since 2000. The house value growth rate is about the same as the state average rate of 65.18% 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 Slidell is much better than the state average in quality. The Slidell area code is 985.