Seaford, NY Profile: Facts & Data


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Seaford, New York - Basic Facts

The Seaford Census Designated Place had a population of 15,296 as of July 1, 2018. Seaford ranks in the upper 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 Seaford is located at latitude 40.6675 and longitude -73.4923 in Nassau County. The formal boundaries for the Seaford Census Designated Place (see map below) encompass a land area of 2.61 sq. miles and a water area of 0.06 sq. miles. Nassau County is in the Eastern time zone (GMT -5). The elevation is 10 feet.

The Seaford Census Designated Place (GNIS ID: 2390268) 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 Seaford Census Designated Place is located within Town of Hempstead, a minor civil division (MCD) of Nassau County.

Alternate Unofficial Names for Seaford: Jerusalem South.

Jump to... (On This Page!)
  1. Seaford 2018 Demographic Data
  2. Growth Rates for Seaford (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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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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


Total Population 15,296
Population in Households 15,244
Population in Familes 13,654
Population in Group Qrtrs 52
Population Density2 5,861
Diversity Index3 25


Median Household Income $113,518
Average Household Income $137,223
Per Capita Income $46,713


Total Housing Units 5,454 (100%)
Owner Occupied HU 4,656 (85.4%)
Renter Occupied HU 539 ( 9.9%)
Vacant Housing Units 259 ( 4.7%)
Median Home Value $477,509
Average Home Value $530,144


Total Households 5,195
Average Household Size 2.93
Family Households 4,054
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 0.0% 0.06%
Households -0.16% -0.01%
Families -0.25% -0.06%
Median Household Income   1.83%
Per Capita Income   2.67%

Seaford, NY - Peer Comparisons by Rank and Percentile

The table below compares Seaford 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 # 125 90th
Population Density # 108 91st
Diversity Index # 570 52nd
Median Household Income # 171 86th
Per Capita Income # 270 78th

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

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