Ballwin is located in east Missouri. Ballwin is part of Saint Louis County. Ballwin has 8.99 square miles of land area and has no water area. As of 2010-2014, the total Ballwin population is 30,478, which has shrunk 2.57% 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%. Ballwin median household income is $82,685 in 2010-2014 and has grown by 24.42% since 2000. The income growth rate is lower than the state average rate of 25.91% and is lower than the national average rate of 27.36%. Ballwin median house value is $237,000 in 2010-2014 and has grown by 50.67% since 2000. The house value growth rate is about the same as the state average rate of 52.06% and is higher 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 Ballwin is much better than the state average in quality. The Ballwin area code is 636.