Clarksville is located in northeast Missouri. Clarksville is part of Pike County. Clarksville has 0.46 square miles of land area and 0.36 square miles of water area. As of 2010-2014, the total Clarksville population is 409, which has shrunk 16.53% since 2000. The population growth rate is much lower than the state average rate of 7.74% and is much lower than the national average rate of 11.61%. Clarksville median household income is $43,125 in 2010-2014 and has grown by 82.65% since 2000. The income growth rate is much higher than the state average rate of 25.91% and is much higher than the national average rate of 27.36%. Clarksville median house value is $66,300 in 2010-2014 and has grown by 13.53% since 2000. The house value growth rate is much lower than the state average rate of 52.06% and is much 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 better than the state average in quality. The Clarksville area code is 573.