West Islip is a city located in New York. West Islip has a 2020 population of 27,149. West Islip is currently declining at a rate of 0.00% annually and its population has decreased by -4.19% since the most recent census, which recorded a population of 28,335 in 2010. West Islip reached it's highest population of 28,335 in 2010.
The average household income in West Islip is $134,083 with a poverty rate of 5.24%. The median rental costs in recent years comes to $1,734 per month, and the median house value is $410,600. The median age in West Islip is 43 years, 42 years for males, and 44.3 years for females. For every 100 females there are 92.0 males.