Newtonsville is located in southwest Ohio. Newtonsville is part of Clermont County. Newtonsville has 0.25 square miles of land area and has no water area. As of 2010-2014, the total Newtonsville population is 417, which has shrunk 15.24% since 2000. The population growth rate is much lower than the state average rate of 1.83% and is much lower than the national average rate of 11.61%. Newtonsville median household income is $54,500 in 2010-2014 and has grown by 29.76% since 2000. The income growth rate is much higher than the state average rate of 19.27% and is higher than the national average rate of 27.36%. Newtonsville median house value is $106,300 in 2010-2014 and has grown by 16.81% since 2000. The house value growth rate is lower than the state average rate of 24.98% 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 Newtonsville is close to the state average in quality. The Newtonsville area code is 513.