Syosset is a city located in Nassau County New York. Syosset has a 2020 population of 19,453. Syosset is currently declining at a rate of 0.00% annually and its population has increased by 3.31% since the most recent census, which recorded a population of 18,829 in 2010. Syosset reached it's highest population of 19,669 in 2017.
The average household income in Syosset is $204,639 with a poverty rate of 2.90%. The median rental costs in recent years comes to $2,734 per month, and the median house value is $663,400. The median age in Syosset is 42.4 years, 40.8 years for males, and 43.5 years for females.