Stony Brook, NY Profile: Facts & Data

The primary coordinate point for Stony Brook is located at latitude 40.9257 and longitude -73.1409 in Suffolk County. The formal boundaries for the Stony Brook Census Designated Place 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 Stony Brook Census Designated Place 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.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Stony Brook, NY Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	13,317 (100%)
Population in Households	13,160 (98.8%)
Population in Families	11,335 (85.1%)
Population in Group Quarters¹	157 ( 1.2%)
Population Density	2,287
Diversity Index²	47


INCOME
Median Household Income	$151,820
Average Household Income	$203,021
% of Income for Mortgage⁴	26%
Per Capita Income	$73,441
Wealth Index⁵	226
Socioeconomic Status Index⁶	High (68.1)

HOUSING
Total HU (Housing Units)	5,025 (100%)
Owner Occupied HU	4,289 (85.4%)
Renter Occupied HU	527 (10.5%)
Vacant Housing Units	209 ( 4.2%)
Median Home Value	$627,173
Average Home Value	$664,904
Housing Affordability Index³	84

HOUSEHOLDS
Total Households	4,816
Average Household Size	2.73
Family Households	3,603
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
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 races 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.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Stony Brook, NY - Peer Comparisons by Rank and Percentile

The table below compares Stony Brook to the other 1,292 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2024 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.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.26%	-0.31%
Households	-0.07%	-0.11%
Families		-0.20%
Median Household Income		1.24%
Per Capita Income		2.24%
Owner Occupied HU		0.03%

Variable Description	Rank	Percentile
Total Population	# 151	88th
Population Density	# 382	70th
Median Household Income	# 152	88th
Housing Affordability Index	# 566	44th
Per Capita Income	# 148	89th
Diversity Index	# 426	67th

Stony Brook, NY Profile: Facts & Data

Stony Brook, New York - Basic Facts

Stony Brook, NY Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Stony Brook, NY - Peer Comparisons by Rank and Percentile

Stony Brook, NY - Most Popular Things to Do

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