Decatur is located in northwest Arkansas. Decatur is part of Benton County. Decatur has 4.45 square miles of land area and 0.05 square miles of water area. As of 2010-2014, the total Decatur population is 2,275, which has grown 73.14% since 2000. The population growth rate is much higher than the state average rate of 10.24% and is much higher than the national average rate of 11.61%. Decatur median household income is $40,109 in 2010-2014 and has grown by 34.40% since 2000. The income growth rate is higher than the state average rate of 28.22% and is higher than the national average rate of 27.36%. Decatur median house value is $84,500 in 2010-2014 and has grown by 38.75% since 2000. The house value growth rate is lower than the state average rate of 49.31% and is lower 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 Decatur is worse than the state average in quality. The Decatur area code is 479.