Smithtown is located in southeast New York. Smithtown is part of Suffolk County. Smithtown has 11.63 square miles of land area and 0.48 square miles of water area. As of 2010-2014, the total Smithtown population is 26,408, which has shrunk 1.83% since 2000. The population growth rate is much lower than the state average rate of 3.26% and is much lower than the national average rate of 11.61%. Smithtown median household income is $110,683 in 2010-2014 and has grown by 36.19% since 2000. The income growth rate is about the same as the state average rate of 35.25% and is higher than the national average rate of 27.36%. Smithtown median house value is $471,200 in 2010-2014 and has grown by 81.16% since 2000. The house value growth rate is lower than the state average rate of 90.79% and is much 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 Smithtown is much better than the state average in quality. The Smithtown area code is 631.