Mount Sinai, NY Profile: Facts, Map & Data


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Mount Sinai, New York - Basic Facts

The Mount Sinai Census Designated Place had a population of 11,996 as of July 1, 2016.

The primary coordinate point for Mount Sinai is located at latitude 40.9433 and longitude -73.0219 in Suffolk County. The formal boundaries for the Mount Sinai Census Designated Place (see map below) encompass a land area of 6 sq. miles and a water area of 0.42 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 33 feet.

The Mount Sinai Census Designated Place (GNIS ID: 2389517) 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 Mount Sinai Census Designated Place is located within Town of Brookhaven, a minor civil division (MCD) of Suffolk County.

Beneath the boundary map are tables with Mount Sinai population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Mount Sinai: Mount Vernon, Non-o-wan-tuck, Old Mans, Old Man's Harbor, Ould Mans.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Mount Sinai Census Designated Place, NY Boundary Map

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

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Mount Sinai, NY Data & Demographics (As of July 1, 2016)


Total Population 11,996
Population in Households 11,962
Population in Familes 10,925
Population in Group Qrtrs 34
Population Density1 2,000
Diversity Index2 30


Total Households 4,052
Average Household Size 2.95
Family Households 3,352
Average Family Size 3


Total Housing Units 4,291 (100%)
Owner Occupied HU 3,784 (88.2%)
Renter Occupied HU 268 ( 6.2%)
Vacant Housing Units 239 ( 5.6%)
Median Home Value $479,809
Average Home Value $526,850


Median Household Income $114,851
Average Household Income $148,298
Per Capita Income $50,182
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.16% -0.03%
Households -0.11% 0.0%
Families -0.18% -0.05%
Median Household Income   1.11%
Per Capita Income   1.34%
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.

Mount Sinai, NY - Peer Comparisons by Rank and Percentile

The table below compares Mount Sinai to the other 1,196 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2016 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 # 166 86th
Population Density1 # 423 65th
Diversity Index2 # 468 61st
Median Household Income # 120 90th
Per Capita Income # 173 86th

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