Central Islip, NY Community Profile: Data

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Central Islip, New York - Basic Facts

Central Islip is the common name for the community and surrounding area while the formal official name is the Central Islip Census Designated Place.

It is a community or populated place (Class Code U5) located in Suffolk County at latitude 40.7907 and longitude -73.2018. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 89 feet.

The formal boundaries for the Central Islip Census Designated Place (see map) encompass a land area of 7.11 sq. miles and a water area of 0 sq. miles.

Camera Icon Photos of the local Central Islip, NY area

Also See: Central Islip, NY ZIP Codes and ZIP Code Maps

Central Islip, NY Data & Demographics (As of July 1, 2014)


Total Population 34,615
Population in Households 34,409
Population in Familes 27,376
Population in Group Qrtrs 206
Population Density1 4,868
Diversity Index2 88


Total Households 9,510
Average Household Size 3.62
Family Households 6,924
Average Family Size 4


Total Housing Units 10,243 (100%)
Owner Occupied HU 6,409 (62.6%)
Renter Occupied HU 3,101 (30.3%)
Vacant Housing Units 733 ( 7.2%)
Median Home Value $281,870
Average Home Value $457,935


Median Household Income $67,934
Average Household Income $80,496
Per Capita Income $22,185
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 0.11% 0.06%
Households 0.36% 0.2%
Families -0.01% -0.01%
Median Household Income   2.26%
Per Capita Income   2.27%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Central Islip, NY - Peer Comparisons by Rank and Percentile

The table below compares Central Islip to the other 1,189 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2014 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.

Variable Description Rank Percentile
Total Population # 30 98th
Population Density1 # 140 88th
Diversity Index2 # 5 100th
Median Household Income # 467 61st
Per Capita Income # 964 19th

Additional comparisons and rankings can be made with a VERY EASY TO USE New York Census Data Comparison Tool.