Stony Brook, NY Profile: Facts, Map & Data


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Stony Brook, New York - Basic Facts

The Stony Brook Census Designated Place had a population of 13,747 as of July 1, 2017.

The primary coordinate point for Stony Brook is located at latitude 40.906 and longitude -73.1274 in Suffolk County. The formal boundaries for the Stony Brook Census Designated Place (see map below) encompass a land area of 5.81 sq. miles and a water area of 0.14 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 89 feet.

The Stony Brook Census Designated Place (GNIS ID: 2390358) 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 Stony Brook Census Designated Place is located within Town of Brookhaven, a minor civil division (MCD) of Suffolk County.

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

Alternate Unofficial Names for Stony Brook: Stonybrook, Wopowag.

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Stony Brook Census Designated Place, NY Boundary Map

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

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Stony Brook, NY Data & Demographics (As of July 1, 2017)


Total Population 13,747
Daytime Population: Workers 3,793
Daytime Population: Residents 6,617
Total Daytime Population (TDP) 10,410
Ratio TDP/Total Population1 0.76
Population in Households 13,653
Population in Familes 11,707
Population in Group Qrtrs 94
Population Density2 2,368
Diversity Index3 34


Median Household Income $134,055
Average Household Income $165,905
Per Capita Income $58,362


Total Housing Units 5,074 (100%)
Owner Occupied HU 4,312 (85.0%)
Renter Occupied HU 506 ( 10.0%)
Vacant Housing Units 256 ( 5.0%)
Median Home Value $487,029
Average Home Value $545,744


Total Households 4,818
Average Household Size 2.83
Family Households 3,604
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 0.01% 0.16%
Households -0.08% 0.09%
Families -0.19% 0.03%
Median Household Income   1.38%
Per Capita Income   1.77%

Stony Brook, NY - Peer Comparisons by Rank and Percentile

The table below compares Stony Brook 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 # 148 88th
Population Density # 368 69th
Diversity Index # 421 65th
Median Household Income # 88 93rd
Per Capita Income # 147 88th

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

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