Armonk, NY Profile: Facts & Data


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Armonk, New York - Basic Facts

The Armonk Census Designated Place had a population of 4,639 as of July 1, 2018.

The primary coordinate point for Armonk is located at latitude 41.1335 and longitude -73.7192 in Westchester County. The formal boundaries for the Armonk Census Designated Place (see map below) encompass a land area of 5.96 sq. miles and a water area of 0.09 sq. miles. Westchester County is in the Eastern time zone (GMT -5). The elevation is 387 feet.

The Armonk Census Designated Place (GNIS ID: 2389150) 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 Armonk Census Designated Place is located within Town of North Castle, a minor civil division (MCD) of Westchester County.

Beneath the boundary map are tables with Armonk 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 Armonk: Mile Square, Mill Square, Sands Mill.

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


Total Population 4,639
Population in Households 4,634
Population in Familes 4,269
Population in Group Qrtrs 5
Population Density1 778
Diversity Index2 28


Median Household Income $167,333
Average Household Income $246,121
Per Capita Income $80,675


Total Housing Units 1,578 (100%)
Owner Occupied HU 1,338 (84.8%)
Renter Occupied HU 166 (10.5%)
Vacant Housing Units 74 ( 4.7%)
Median Home Value $1,416,193
Average Home Value $1,446,482


Total Households 1,504
Average Household Size 3.08
Family Households 1,248
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 0.84% 0.66%
Households 0.76% 0.62%
Families 0.63% 0.57%
Median Household Income   1.54%
Per Capita Income   1.89%

Armonk, NY - Peer Comparisons by Rank and Percentile

The table below compares Armonk 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 # 371 69th
Population Density # 798 33rd
Diversity Index # 516 57th
Median Household Income # 47 96th
Per Capita Income # 56 95th

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

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New York Census Data Comparison Tool

Compare New York July 1, 2018 Data
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