Islip (hamlet), New York

Islip, New York
U.S. census map
Islip
Location on Long Island
Islip
Location within the state of New York
Coordinates: 40°45′24″N 73°11′56″W / 40.75667°N 73.19889°W / 40.75667; -73.19889
Country United States
State New York
CountySuffolk
TownIslip
Area
  Total
5.40 sq mi (13.98 km2)
  Land4.75 sq mi (12.30 km2)
  Water0.65 sq mi (1.68 km2)
Elevation
16 ft (5 m)
Population
 (2020)
  Total
18,418
  Density3,878.29/sq mi (1,497.55/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code
11751
Area code(s)631, 934
FIPS code36-37869
GNIS feature ID0979097

Islip (/ˈslɪp/ EYE-slip) is a hamlet and census-designated place (CDP) that lies within the town of the same name in Suffolk County, New York. Located on the south shore of Long Island, the CDP had a population of 18,869 at the time of the 2010 census, a decline of 8% from the 2000 census.