Seaford is a city located in Nassau County New York. Seaford has a 2020 population of 15,040. Seaford is currently declining at a rate of 0.00% annually and its population has decreased by -1.66% since the most recent census, which recorded a population of 15,294 in 2010. Seaford reached it's highest population of 15,891 in 2016.
The average household income in Seaford is $159,540 with a poverty rate of 2.09%. The median rental costs in recent years comes to $2,175 per month, and the median house value is $481,900. The median age in Seaford is 42.8 years, 41.1 years for males, and 44.7 years for females.