Sayville is located in southeast New York. Sayville is part of Suffolk County. Sayville has 5.29 square miles of land area and 0.06 square miles of water area. As of 2010-2014, the total Sayville population is 16,311, which has shrunk 2.53% 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%. Sayville median household income is $104,427 in 2010-2014 and has grown by 38.80% since 2000. The income growth rate is higher than the state average rate of 35.25% and is higher than the national average rate of 27.36%. Sayville median house value is $420,600 in 2010-2014 and has grown by 102.31% since 2000. The house value growth rate is higher 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 Sayville is much better than the state average in quality. The Sayville area codes are 516, 631.