Clarksville is located in northwest Arkansas. Clarksville is part of Johnson County. Clarksville has 18.48 square miles of land area and 0.70 square miles of water area. As of 2010-2014, the total Clarksville population is 9,286, which has grown 20.30% 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%. Clarksville median household income is $29,007 in 2010-2014 and has grown by 18.16% since 2000. The income growth rate is much lower than the state average rate of 28.22% and is much lower than the national average rate of 27.36%. Clarksville median house value is $90,500 in 2010-2014 and has grown by 43.65% 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 Clarksville is much better than the state average in quality. The Clarksville area code is 479.