Oyster Bay, NY Profile: Facts & Data


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Oyster Bay, New York - Basic Facts

The Oyster Bay CDP(1) had a population of 6,868 as of July 1, 2021. Oyster Bay ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New York. See peer rankings below.

The primary coordinate point for Oyster Bay is located at latitude 40.8657 and longitude -73.5321 in Nassau County. The formal boundaries for the Oyster Bay Census Designated Place encompass a land area of 1.23 sq. miles and a water area of 0.37 sq. miles. Nassau County is in the Eastern time zone (GMT -5). The elevation is 49 feet.

The Oyster Bay 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 Oyster Bay Census Designated Place is located within Town of Oyster Bay, a minor civil division (MCD) of Nassau 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.

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  1. Oyster Bay 2021 Demographic Data
  2. Growth Rates for Oyster Bay (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

Oyster Bay, NY Data & Demographics (As of July 1, 2021)


Total Population 6,868 (100%)
Population in Households 6,866 (100.0%)
Population in Families 5,183 (75.5%)
Population in Group Quarters1 2 ( 0.0%)
Population Density 5,432
Diversity Index2 61


Median Household Income $90,337
Average Household Income $134,681
% of Income for Mortgage4 35%
Per Capita Income $55,340
Wealth Index5 146


Total HU (Housing Units) 3,029 (100%)
Owner Occupied HU 1,602 (52.9%)
Renter Occupied HU 1,220 (40.3%)
Vacant Housing Units 207 ( 6.8%)
Median Home Value $745,521
Average Home Value $815,543
Housing Affordability Index3 60


Total Households 2,822
Average Household Size 2.43
Family Households 1,650
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 0.21% -0.05%
Households 0.2% -0.04%
Families 0.02% -0.15%
Median Household Income   2.62%
Per Capita Income   2.1%
Owner Occupied HU   0.48%

Oyster Bay, NY - Peer Comparisons by Rank and Percentile

The table below compares Oyster Bay 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 # 269 78th
Population Density # 121 90th
Median Household Income # 377 69th
Housing Affordability Index # 73 6th
Per Capita Income # 208 83rd
Diversity Index # 155 87th

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

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