Mount Sinai, NY Profile: Facts & Data


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Mount Sinai, New York - Basic Facts

The Mount Sinai Census Designated Place had a population of 12,038 as of July 1, 2018.

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, 2018.

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

Jump to... (On This Page!)
  1. Mount Sinai 2018 Demographic Data
  2. Growth Rates for Mount Sinai (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. New York Research Tools (Easy Tools & Current Data)
  3. New York Data Comparison Tool - 2018 Demographics

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Mount Sinai, NY Data & Demographics (As of July 1, 2018)


Total Population 12,038
Population in Households 12,005
Population in Familes 10,988
Population in Group Qrtrs 33
Population Density2 2,007
Diversity Index3 31


Median Household Income $127,967
Average Household Income $163,699
Per Capita Income $54,835


Total Housing Units 4,285 (100%)
Owner Occupied HU 3,773 (88.1%)
Renter Occupied HU 253 ( 5.9%)
Vacant Housing Units 259 ( 6.0%)
Median Home Value $502,447
Average Home Value $562,616


Total Households 4,026
Average Household Size 2.98
Family Households 3,325
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population -0.08% 0.0%
Households -0.16% -0.05%
Families -0.24% -0.1%
Median Household Income   1.59%
Per Capita Income   2.26%

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, 2018 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 # 165 86th
Population Density # 417 65th
Diversity Index # 464 61st
Median Household Income # 114 91st
Per Capita Income # 176 85th

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

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New York Census Data Comparison Tool

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