Commack, NY Profile: Facts & Data


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Commack, New York - Basic Facts

The Commack Census Designated Place had a population of 36,192 as of July 1, 2018. Commack 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 Commack is located at latitude 40.8442 and longitude -73.2834 in Suffolk County. The formal boundaries for the Commack Census Designated Place (see map below) encompass a land area of 11.96 sq. miles and a water area of 0 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 131 feet.

The Commack Census Designated Place (GNIS ID: 2389350) 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 Commack Census Designated Place is located within Town of Smithtown, a minor civil division (MCD) of Suffolk County.

Beneath the boundary map are tables with Commack population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

Alternate Unofficial Names for Commack: Comac, Co-Mac, Comack, Commac, Comock, Wanecommack, Winne - Comack, Winnecomac Win-Ne-Co-Mack, Winnie Comac.

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


Total Population 36,192
Population in Households 35,698
Population in Familes 32,907
Population in Group Qrtrs 494
Population Density1 3,026
Diversity Index2 30


Median Household Income $123,985
Average Household Income $157,180
Per Capita Income $51,883


Total Housing Units 12,245 (100%)
Owner Occupied HU 10,781 (88.0%)
Renter Occupied HU 1,066 ( 8.7%)
Vacant Housing Units 398 ( 3.3%)
Median Home Value $520,621
Average Home Value $565,722


Total Households 11,847
Average Household Size 3.01
Family Households 9,787
Average Family Size 3
  1. Population Density = Total Population per square mile.
  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 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.


2010-2017 2017-2022
Population 0.02% 0.09%
Households -0.06% 0.01%
Families -0.13% -0.03%
Median Household Income   2.06%
Per Capita Income   2.51%

Commack, NY - Peer Comparisons by Rank and Percentile

The table below compares Commack 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 # 29 98th
Population Density # 274 77th
Diversity Index # 488 59th
Median Household Income # 118 90th
Per Capita Income # 198 84th

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

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