Lynbrook is a city located in New York. With a 2020 population of 19,463, it is the 43rd largest city in New York and the 1894th largest city in the United States. Lynbrook is currently declining at a rate of -0.08% annually but its population has increased by 0.19% since the most recent census, which recorded a population of 19,427 in 2010. Lynbrook reached it's highest population of 23,151 in 1970. Spanning over 2 miles, Lynbrook has a population density of 9,669 people per square mile.
The average household income in Lynbrook is $122,708 with a poverty rate of 3.61%. The median rental costs in recent years comes to $1,758 per month, and the median house value is $441,300. The median age in Lynbrook is 43.2 years, 43.4 years for males, and 42.9 years for females. For every 100 females there are 94.9 males.