Greenlawn is a city located in Suffolk County New York. Greenlawn has a 2020 population of 14,392. Greenlawn is currently declining at a rate of 0.00% annually and its population has increased by 4.73% since the most recent census, which recorded a population of 13,742 in 2010. Greenlawn reached it's highest population of in .
The average household income in Greenlawn is $136,321 with a poverty rate of 4.06%. The median rental costs in recent years comes to $641 per month, and the median house value is $489,900. The median age in Greenlawn is 42.9 years, 38.6 years for males, and 46.2 years for females.