Great River, NY Profile: Facts, Map & Data


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Great River, New York - Basic Facts

The Great River Census Designated Place had a population of 1,494 as of July 1, 2017. Great River ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in New York. See peer rankings below.

The primary coordinate point for Great River is located at latitude 40.7165 and longitude -73.1622 in Suffolk County. The formal boundaries for the Great River Census Designated Place (see map below) encompass a land area of 4.59 sq. miles and a water area of 0.59 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 13 feet.

The Great River Census Designated Place (GNIS ID: 2389870) 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.

The Great River Census Designated Place is located within Town of Islip, a minor civil division (MCD) of Suffolk County.

Beneath the boundary map are tables with Great River population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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Great River Census Designated Place, NY Boundary Map

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Boundary Maps: Town of Islip | Suffolk County | New York Counties

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Great River, NY Data & Demographics (As of July 1, 2017)


Total Population 1,494
Daytime Population: Workers 614
Daytime Population: Residents 756
Total Daytime Population (TDP) 1,370
Ratio TDP/Total Population1 0.92
Population in Households 1,494
Population in Familes 1,356
Population in Group Qrtrs 0
Population Density2 326
Diversity Index3 18


Median Household Income $185,394
Average Household Income $258,736
Per Capita Income $86,938


Total Housing Units 517 (100%)
Owner Occupied HU 441 (85.3%)
Renter Occupied HU 61 (11.8%)
Vacant Housing Units 15 ( 2.9%)
Median Home Value $735,085
Average Home Value $780,329


Total Households 502
Average Household Size 2.98
Family Households 400
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.05% 0.17%
Households -0.03% 0.08%
Families -0.1% 0.0%
Median Household Income   0.69%
Per Capita Income   1.4%

Great River, NY - Peer Comparisons by Rank and Percentile

The table below compares Great River to the other 1,196 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2017 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 # 707 41st
Population Density # 1059 12th
Diversity Index # 717 40th
Median Household Income # 33 97th
Per Capita Income # 41 97th

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

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