Gardendale is located in north Alabama. Gardendale is part of Jefferson County. Gardendale has 22.55 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Gardendale population is 13,809, which has grown 18.78% since 2000. The population growth rate is much higher than the state average rate of 8.33% and is much higher than the national average rate of 11.61%. Gardendale median household income is $56,852 in 2010-2014 and has grown by 24.17% since 2000. The income growth rate is lower than the state average rate of 27.47% and is lower than the national average rate of 27.36%. Gardendale median house value is $160,800 in 2010-2014 and has grown by 45.92% since 2000. The house value growth rate is about the same as the state average rate of 45.48% 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 Gardendale is close to the state average in quality. The Gardendale area code is 205.