Islip is located in New York. Islip, New York has a population of 335,302. Islip is more family-centric than the surrounding county with 35.58% of the households containing married families with children. The county average for households married with children is 35.14%.
The median household income in Islip, New York is $90,278. The median household income for the surrounding county is $92,838 compared to the national median of $57,652. The median age of people living in Islip is 38 years.
The average high temperature in July is 81.8 degrees, with an average low temperature in January of 23.3 degrees. The average rainfall is approximately 46.4 inches per year, with 24.8 inches of snow per year.