Sayville, NY Profile: Facts, Map & Data


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Sayville, New York - Basic Facts

The Sayville Census Designated Place had a population of 17,128 as of July 1, 2016. Sayville 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 Sayville is located at latitude 40.7476 and longitude -73.0852 in Suffolk County. The formal boundaries for the Sayville Census Designated Place (see map below) encompass a land area of 5.31 sq. miles and a water area of 0.06 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 20 feet.

The Sayville Census Designated Place (GNIS ID: 2390258) 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 Sayville Census Designated Place is located within Town of Islip, a minor civil division (MCD) of Suffolk County.

Beneath the boundary map are tables with Sayville population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Sayville Census Designated Place, NY Boundary Map

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Boundary Maps: Town of Islip | Suffolk County | New York Counties

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Sayville, NY Data & Demographics (As of July 1, 2016)


Total Population 17,128
Population in Households 16,562
Population in Familes 14,317
Population in Group Qrtrs 566
Population Density1 3,228
Diversity Index2 22


Total Households 6,078
Average Household Size 2.72
Family Households 4,400
Average Family Size 3


Total Housing Units 6,352 (100%)
Owner Occupied HU 4,758 (74.9%)
Renter Occupied HU 1,320 (20.8%)
Vacant Housing Units 274 ( 4.3%)
Median Home Value $449,416
Average Home Value $497,037


Median Household Income $101,657
Average Household Income $128,012
Per Capita Income $46,473
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.26% 0.3%
Households 0.25% 0.25%
Families 0.13% 0.18%
Median Household Income   1.57%
Per Capita Income   1.61%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Sayville, NY - Peer Comparisons by Rank and Percentile

The table below compares Sayville to the other 1,196 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2016 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 # 111 91st
Population Density1 # 255 79th
Diversity Index2 # 615 49th
Median Household Income # 196 84th
Per Capita Income # 210 83rd

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