Thornwood, NY Profile: Facts, Map & Data


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Thornwood, New York - Basic Facts

The Thornwood Census Designated Place had a population of 4,020 as of July 1, 2017. Thornwood 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 Thornwood is located at latitude 41.1186 and longitude -73.7795 in Westchester County. The formal boundaries for the Thornwood Census Designated Place (see map below) encompass a land area of 1.09 sq. miles and a water area of 0 sq. miles. Westchester County is in the Eastern time zone (GMT -5). The elevation is 269 feet.

The Thornwood Census Designated Place (GNIS ID: 2390386) 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 Thornwood Census Designated Place is located within Town of Mount Pleasant, a minor civil division (MCD) of Westchester County.

Beneath the boundary map are tables with Thornwood population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Thornwood: Hillside, Nanahagen, Sherman Park.

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Thornwood Census Designated Place, NY Boundary Map

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Thornwood, NY Data & Demographics (As of July 1, 2017)


Total Population 4,020
Daytime Population: Workers 1,998
Daytime Population: Residents 1,723
Total Daytime Population (TDP) 3,721
Ratio TDP/Total Population1 0.93
Population in Households 3,953
Population in Familes 3,466
Population in Group Qrtrs 67
Population Density2 3,678
Diversity Index3 41


Median Household Income $101,760
Average Household Income $127,417
Per Capita Income $43,514


Total Housing Units 1,419 (100%)
Owner Occupied HU 1,087 (76.6%)
Renter Occupied HU 292 (20.6%)
Vacant Housing Units 40 ( 2.8%)
Median Home Value $683,673
Average Home Value $704,894


Total Households 1,379
Average Household Size 2.87
Family Households 1,065
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  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.


2010-2017 2017-2022
Population 0.93% 0.8%
Households 0.85% 0.73%
Families 0.9% 0.65%
Median Household Income   2.05%
Per Capita Income   2.59%

Thornwood, NY - Peer Comparisons by Rank and Percentile

The table below compares Thornwood to the other 1,196 incorporated cities, towns and CDPs in New York by rank and percentile using July 1, 2017 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 # 407 66th
Population Density # 215 82nd
Diversity Index # 323 73rd
Median Household Income # 224 81st
Per Capita Income # 295 75th

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

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