Sayville is a city located in Suffolk County New York. Sayville has a 2020 population of 15,910. Sayville is currently declining at a rate of 0.00% annually and its population has decreased by -5.60% since the most recent census, which recorded a population of 16,853 in 2010. Sayville reached it's highest population of 16,853 in 2010.
The average household income in Sayville is $146,315 with a poverty rate of 6.15%. The median rental costs in recent years comes to $1,866 per month, and the median house value is $451,400. The median age in Sayville is 44.9 years, 42 years for males, and 47.8 years for females.