Selden is a city located in Suffolk County New York. Selden has a 2020 population of 20,093. Selden is currently declining at a rate of 0.00% annually and its population has increased by 1.22% since the most recent census, which recorded a population of 19,851 in 2010. Selden reached it's highest population of 20,474 in 2013.
The average household income in Selden is $105,539 with a poverty rate of 6.52%. The median rental costs in recent years comes to $1,810 per month, and the median house value is $330,100. The median age in Selden is 38.5 years, 37.7 years for males, and 39.7 years for females.