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Westchester County, NY Population by Age

The median age in Westchester County, NY is 41.3, as per 2018-2022 ACS 5 -Year Estimates. Of the total population, 17.49% were under the age of 15, 18.50% aged 15 to 29, 46.54% aged 30 to 64, 14.70% aged 65 to 84, and 2.78% were 85 years of age and older.
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By Neilsberg Research
Updated Jul 26, 2024

Westchester County, NY population age distributions

A complete breakdown of Westchester County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.

Age Group Population % of Total Population
Under 5 years 53,161 5.33%
5 to 9 years 57,938 5.81%
10 to 14 years 63,374 6.35%
15 to 19 years 66,711 6.69%
20 to 24 years 61,656 6.18%
25 to 29 years 56,227 5.63%
30 to 34 years 58,017 5.81%
35 to 39 years 63,734 6.39%
40 to 44 years 65,657 6.58%
45 to 49 years 67,283 6.74%
50 to 54 years 72,228 7.24%
55 to 59 years 71,062 7.12%
60 to 64 years 66,461 6.66%
65 to 69 years 51,742 5.19%
70 to 74 years 43,874 4.4%
75 to 79 years 30,241 3.03%
80 to 84 years 20,755 2.08%
85 years and over 27,783 2.78%
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Westchester County, NY population by age group

Key stats
302,840
Population under 25 years
243,635
Population aged 25-44
277,034
Population aged 45-64
174,395
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022

FIGURE 1

Westchester County, NY population by age group.

The largest age group is 50 to 54 years with a population of 72,228 (7.24% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.
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The largest age group in Westchester County, NY was for the group of age 50 to 54 years with a population of 72,228 (7.24%), according to the 2018-2022 American Community Survey.

At the same time, the smallest age group in Westchester County, NY was the 80 to 84 years with a population of 20,755 (2.08%).

Westchester County, NY population by age cohort

To better understand the age distribution of Westchester County, NY's population, we divided it into the following 3 cohorts:

  • Children : Under the age of 18 years
  • Adults (working population): Between the age of 18 and 64 years
  • Seniors: 65 years and above

FIGURE 2

Westchester County, NY population by age cohort

The largest age group was 18 to 64 years with a population of 608,877 (61.02% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.
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Westchester County, NY population by age cohort

Here's the population for each of the three cohorts.

Age Group Population % of Total Population
Under 18 years 214,632 21.51%
18 to 64 years 608,877 61.02%
65 years and over 174,395 17.48%
Exploring Westchester County's Diversity? Request Customized Data Now!

Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Westchester County 's population under 18 was 21.51%, compared to the 22.11% nationwide.
  • Westchester County's working population (between 18 and 64) was 61.02%, compared to 61.36% nationwide.
  • Westchester County's elderly or the senior population (over 65 age) was 17.48% as compared to 16.53% nationwide.

Westchester County, NY population pyramid

Population pyramid for Westchester County, NY is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.

Key stats from our analysis of the Westchester County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Westchester County, NY, is 26.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Westchester County, NY, is 26.9.
  • Total dependency ratio for Westchester County, NY is 53.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Westchester County, NY is 3.7.

FIGURE 3

Westchester County, NY population pyramid

Westchester County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.
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Westchester County, NY population pyramid

Here's the Westchester County, NY's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 27,270 25,891 53,161
5 to 9 years 30,320 27,618 57,938
10 to 14 years 32,272 31,102 63,374
15 to 19 years 33,965 32,746 66,711
20 to 24 years 30,745 30,911 61,656
25 to 29 years 28,457 27,770 56,227
30 to 34 years 29,262 28,755 58,017
35 to 39 years 32,234 31,500 63,734
40 to 44 years 32,222 33,435 65,657
45 to 49 years 33,267 34,016 67,283
50 to 54 years 35,488 36,740 72,228
55 to 59 years 34,639 36,423 71,062
60 to 64 years 32,337 34,124 66,461
65 to 69 years 24,266 27,476 51,742
70 to 74 years 20,022 23,852 43,874
75 to 79 years 12,714 17,527 30,241
80 to 84 years 8,117 12,638 20,755
85 years and over 9,422 18,361 27,783
Exploring Westchester County's Diversity? Request Customized Data Now!

Things to know

What is the population of Westchester County, NY under 18?

Westchester County's population under the age of 18 is 214,632, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.51% of the total resident population of Westchester County, NY.

What is the aging population in Westchester County, NY?

Westchester County's population aged 65 years and above was 174,395. As per the U.S. Census Bureau's American Community Survey, this population is 17.48% of the entire population.

References

Datasets

Explore datasets by year of publication.
2024
Westchester County, NY Age Group Population Dataset: A Complete Breakdown of Westchester County Age Demographics from 0 to 85 Years and Over, Distributed Across 18 Age Groups // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the Westchester County population distribution across 18 age groups. It lists the population in each age group along with the percentage population relative of the total population for Westchester County. The dataset can be utilized to understand the population distribution of Westchester County by age. For example, using this dataset, we can identify the largest age group in Westchester County.

Key observations

The largest age group in Westchester County, NY was for the group of age 50 to 54 years years with a population of 72,228 (7.24%), according to the ACS 2018-2022 5-Year Estimates. At the same time, the smallest age group in Westchester County, NY was the 80 to 84 years years with a population of 20,755 (2.08%). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group in consideration
  • Population: The population for the specific age group in the Westchester County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Westchester County total population. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Westchester County Population by Age. You can refer the same here

Westchester County, NY Age Cohorts Dataset: Children, Working Adults, and Seniors in Westchester County - Population and Percentage Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the Westchester County population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). It lists the population in each age cohort group along with its percentage relative to the total population of Westchester County. The dataset can be utilized to understand the population distribution across children, working population and senior population for dependency ratio, housing requirements, ageing, migration patterns etc.

Key observations

The largest age group was 18 to 64 years with a poulation of 608,877 (61.02% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Age cohorts:

  • Under 18 years
  • 18 to 64 years
  • 65 years and over

Variables / Data Columns

  • Age Group: This column displays the age cohort for the Westchester County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Westchester County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Westchester County is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Westchester County Population by Age. You can refer the same here

Westchester County, NY Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Westchester County, NY population pyramid, which represents the Westchester County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates. It lists the male and female population for each age group, along with the total population for those age groups. Higher numbers at the bottom of the table suggest population growth, whereas higher numbers at the top indicate declining birth rates. Furthermore, the dataset can be utilized to understand the youth dependency ratio, old-age dependency ratio, total dependency ratio, and potential support ratio.

Key observations

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Westchester County, NY, is 26.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Westchester County, NY, is 26.9.
  • Total dependency ratio for Westchester County, NY is 53.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Westchester County, NY is 3.7.
Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group for the Westchester County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Westchester County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Westchester County for the selected age group is shown in the following column.
  • Total Population: The total population of the Westchester County for the selected age group is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Westchester County Population by Age. You can refer the same here

If you're looking for datasets from another year, please feel free to contact us at research@neilsberg.com and we'll be happy to assist you further.

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Westchester County, NY Demographics Westchester County, NY Population

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Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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Collection 5 Resources