Holbrook, NY Profile: Facts & Data


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Holbrook, New York - Basic Facts

The Holbrook Census Designated Place had a population of 27,385 as of July 1, 2018. Holbrook 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 Holbrook is located at latitude 40.7944 and longitude -73.0707 in Suffolk County. The formal boundaries for the Holbrook Census Designated Place (see map below) encompass a land area of 7.17 sq. miles and a water area of 0 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 118 feet.

The Holbrook Census Designated Place (GNIS ID: 2389939) 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 Holbrook Census Designated Place is located within Town of Islip, a minor civil division (MCD) of Suffolk County.

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

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


Total Population 27,385
Population in Households 27,244
Population in Familes 23,861
Population in Group Qrtrs 141
Population Density1 3,818
Diversity Index2 37


Median Household Income $104,307
Average Household Income $121,197
Per Capita Income $42,450


Total Housing Units 9,932 (100%)
Owner Occupied HU 7,334 (73.8%)
Renter Occupied HU 2,221 (22.4%)
Vacant Housing Units 377 ( 3.8%)
Median Home Value $384,735
Average Home Value $417,920


Total Households 9,555
Average Household Size 2.85
Family Households 7,225
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 0.08% 0.14%
Households 0.01% 0.05%
Families -0.1% -0.01%
Median Household Income   1.26%
Per Capita Income   2.62%

Holbrook, NY - Peer Comparisons by Rank and Percentile

The table below compares Holbrook 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 # 52 96th
Population Density # 202 83rd
Diversity Index # 389 68th
Median Household Income # 231 81st
Per Capita Income # 350 71st

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

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