Shelter Island, NY Profile: Facts & Data


Shelter Island Local Links & Resources:
Resources | ALL Shelter Island Content
Planning to visit Shelter Island? See Local Hotels

Also See: Shelter Island, NY ZIP Codes & ZIP Code Maps

Shelter Island, New York - Basic Facts

The Shelter Island CDP(1) had a population of 1,293 as of July 1, 2021. Shelter Island ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in New York. See peer rankings below.

The primary coordinate point for Shelter Island is located at latitude 41.0682 and longitude -72.3387 in Suffolk County. The formal boundaries for the Shelter Island Census Designated Place encompass a land area of 6.55 sq. miles and a water area of 0.14 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 49 feet.

The Shelter Island 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 Shelter Island Census Designated Place is located within Town of Shelter Island, 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. Shelter Island 2021 Demographic Data
  2. Growth Rates for Shelter Island (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 - 2021 Demographics

Shelter Island, NY Data & Demographics (As of July 1, 2021)


Total Population 1,293 (100%)
Population in Households 1,293 (100.0%)
Population in Families 985 (76.2%)
Population in Group Quarters1 0
Population Density 197
Diversity Index2 29


Median Household Income $103,341
Average Household Income $145,933
% of Income for Mortgage4 35%
Per Capita Income $66,025
Wealth Index5 250


Total HU (Housing Units) 1,136 (100%)
Owner Occupied HU 466 (41.0%)
Renter Occupied HU 119 (10.5%)
Vacant Housing Units 551 (48.5%)
Median Home Value $862,500
Average Home Value $896,030
Housing Affordability Index3 70


Total Households 585
Average Household Size 2.21
Family Households 354
Average Family Size 3
  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.


2010-2021 2021-2026
Population -0.27% -0.36%
Households -0.2% -0.34%
Families -0.37% -0.46%
Median Household Income   2.29%
Per Capita Income   2.71%
Owner Occupied HU   -0.09%

Shelter Island, NY - Peer Comparisons by Rank and Percentile

The table below compares Shelter Island to the other 1,195 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2021 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 # 749 37th
Population Density # 1131 5th
Median Household Income # 299 75th
Housing Affordability Index # 116 10th
Per Capita Income # 132 89th
Diversity Index # 531 56th

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

Shelter Island, NY - Most Popular Things to Do

Also See: Nearby Hotels | Driving Directions

Use HTL Address Research for a New York Address and get...

Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2021, data includes home values, household income, percentage of homes owned, rented or vacant, etc.

Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features

New York Census Data Comparison Tool

Compare New York July 1, 2021 Data
Highest or Lowest: