Also See: Islip, NY ZIP Codes & ZIP Code Maps
The Islip Census Designated Place had a population of 18,605 as of July 1, 2020. Islip ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New York. See peer rankings below.
The primary coordinate point for Islip is located at latitude 40.7298 and longitude -73.2104 in Suffolk County. The formal boundaries for the Islip Census Designated Place encompass a land area of 4.82 sq. miles and a water area of 0.12 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 13 feet.
The Islip Census Designated Place (GNIS ID: 2389974) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.
|Total Population||18,605 (100%)|
|Population in Households||18,547 (99.7%)|
|Population in Families||15,934 (85.6%)|
|Population in Group Quarters1||58 ( 0.3%)|
|Median Household Income||$105,213|
|Average Household Income||$129,858|
|% of Income for Mortgage4||16%|
|Per Capita Income||$44,718|
|Total HU (Housing Units)||6,715 (100%)|
|Owner Occupied HU||5,175 (77.1%)|
|Renter Occupied HU||1,231 (18.3%)|
|Vacant Housing Units||309 ( 4.6%)|
|Median Home Value||$392,942|
|Average Home Value||$449,696|
|Housing Affordability Index3||110|
|Average Household Size||2.9|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||1.33%|
|Per Capita Income||2.16%|
|Owner Occupied HU||-0.21%|
The table below compares Islip to the other 1,195 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
|Total Population||# 97||92nd|
|Population Density||# 193||84th|
|Median Household Income||# 258||78th|
|Housing Affordability Index||# 318||27th|
|Per Capita Income||# 333||72nd|
|Diversity Index||# 229||81st|
Additional comparisons and rankings can be made with a VERY EASY TO USE New York Census Data Comparison Tool.