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Mount Sinai, NY Profile: Facts & Data

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Mount Sinai, New York - Basic Facts

The Mount Sinai CDP(1) had a population of 12,031 as of July 1, 2024.

The primary coordinate point for Mount Sinai is located at latitude 40.947 and longitude -73.0295 in Suffolk County. The formal boundaries for the Mount Sinai Census Designated Place 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 Mount Sinai 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.

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


  1. 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.

Jump to... (On This Page!)
  1. Mount Sinai 2024 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 - 2024 Demographics
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Mount Sinai, NY Data & Demographics (As of July 1, 2024)

POPULATION

Total Population 12,031 (100%)
Population in Households 11,996 (99.7%)
Population in Families 10,788 (89.7%)
Population in Group Quarters1 35 ( 0.3%)
Population Density 2,005
Diversity Index2 42
 
 

INCOME

Median Household Income $159,702
Average Household Income $206,104
% of Income for Mortgage4 27%
Per Capita Income $73,737
Wealth Index5 233
Socioeconomic Status Index6 Moderate (62.2)
 

HOUSING

Total HU (Housing Units) 4,552 (100%)
Owner Occupied HU 4,075 (89.5%)
Renter Occupied HU 229 ( 5.0%)
Vacant Housing Units 248 ( 5.4%)
Median Home Value $694,962
Average Home Value $768,178
Housing Affordability Index3 80
 

HOUSEHOLDS

Total Households 4,304
Average Household Size 2.79
Family Households 3,337
Average Family Size 3.00
NOTES
  1. 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.
  2. 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.
  3. 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.
  4. 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).
  5. 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.
  6. 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.

GROWTH RATE / YEAR

 2020-2024 2024-2029
Population 0.82% 0.35%
Households 0.97% 0.62%
Families   0.65%
Median Household Income   1.44%
Per Capita Income   2.42%
Owner Occupied HU   0.64%

Mount Sinai, NY - Peer Comparisons by Rank and Percentile

The table below compares Mount Sinai 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.

Variable Description Rank Percentile
Total Population # 167 87th
Population Density # 419 68th
Median Household Income # 125 90th
Housing Affordability Index # 508 39th
Per Capita Income # 144 89th
Diversity Index # 512 60th

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

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