Gardner is located in northeast Illinois. Gardner is between the Grundy, Kankakee county. Gardner has 2.92 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Gardner population is 1,325, which has shrunk 5.76% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Gardner median household income is $68,990 in 2010-2014 and has grown by 62.33% since 2000. The income growth rate is much higher than the state average rate of 22.70% and is much higher than the national average rate of 27.36%. Gardner median house value is $142,200 in 2010-2014 and has grown by 47.20% since 2000. The house value growth rate is higher than the state average rate of 34.33% 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 Gardner is better than the state average in quality. The Gardner area code is 815.