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Allegheny County, PA Population by Age

The median age in Allegheny County, PA is 40.7, as per 2021 ACS 5-Year Estimates. Of the total population, 15.65% were under the age of 15, 19.33% aged 15 to 29, 46.13% aged 30 to 64, 16.09% aged 65 to 84, and 2.80% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Allegheny County, PA population age distribution

A complete breakdown of Allegheny 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 64,802 5.2%
5 to 9 years 63,007 5.06%
10 to 14 years 67,247 5.4%
15 to 19 years 73,115 5.87%
20 to 24 years 74,764 6%
25 to 29 years 93,013 7.46%
30 to 34 years 95,850 7.69%
35 to 39 years 81,229 6.52%
40 to 44 years 71,829 5.76%
45 to 49 years 70,801 5.68%
50 to 54 years 77,066 6.18%
55 to 59 years 86,976 6.98%
60 to 64 years 91,075 7.31%
65 to 69 years 78,053 6.26%
70 to 74 years 57,881 4.64%
75 to 79 years 38,814 3.11%
80 to 84 years 25,712 2.06%
85 years and over 34,882 2.8%
Exploring Allegheny County's Diversity? Request Customized Data Now!

TABLE OF CONTENTS

Allegheny County, PA population by age group

Key stats
342,935
Population under 25 years
341,921
Population aged 25-44
325,918
Population aged 45-64
235,342
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The graph shows Allegheny County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Allegheny County, PA population by age group. The largest age group was 30-34 years with a poulation of 95,850 (7.69% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Allegheny County, PA was for the group of age 30-34 years with a population of 95,850 (7.69%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Allegheny County, PA was the 80-84 years with a population of 25,712 (2.06%).

Allegheny County, PA population by age cohort

To better understand the age distribution of Allegheny County, PA'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
The pie chart shows Allegheny County's population divided into segments, with each segment representing an age cohort. The area of each segment is in the same proportion of a circle as the population of the cohort is of the total population.
Allegheny County, PA population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). The largest age group was 18 - 64 years with a poulation of 775,224 (62.21% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Age Group Population % of Total Population
Under 18 years 235,550 18.9%
18 to 64 years 775,224 62.21%
85 years and over 235,342 18.89%
Exploring Allegheny 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:

  • Allegheny County's population under 18 was 18.90%, compared to the 22.51% nationwide.
  • Allegheny County's working population (between 18 and 64) was 62.21%, compared to 61.45% nationwide.
  • Allegheny County's elderly or the senior population (over 65 age) was 18.89% as compared to 16.04% nationwide.

Allegheny County, PA population pyramid

Population pyramid for Allegheny County, PA 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 Allegheny County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Allegheny County, PA, is 23.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Allegheny County, PA, is 28.9.
  • Total dependency ratio for Allegheny County, PA is 52.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Allegheny County, PA is 3.5.
The graph shows Allegheny County's population across different age group and gender, with population on x-axis and population y-axis. The male population is plotted on the left in blue color whereas the female population is plotted on the right in pink color.
Allegheny County, PA population pyramid i.e. Allegheny County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Allegheny County, PA's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 33,077 31,725 64,802
5 to 9 years 31,887 31,120 63,007
10 to 14 years 34,802 32,445 67,247
15 to 19 years 36,849 36,266 73,115
20 to 24 years 37,254 37,510 74,764
25 to 29 years 46,887 46,126 93,013
30 to 34 years 48,671 47,179 95,850
35 to 39 years 40,884 40,345 81,229
40 to 44 years 36,776 35,053 71,829
45 to 49 years 35,277 35,524 70,801
50 to 54 years 37,633 39,433 77,066
55 to 59 years 41,650 45,326 86,976
60 to 64 years 43,878 47,197 91,075
65 to 69 years 37,288 40,765 78,053
70 to 74 years 25,744 32,137 57,881
75 to 79 years 16,177 22,637 38,814
80 to 84 years 10,201 15,511 25,712
85 years and over 11,606 23,276 34,882
Exploring Allegheny County's Diversity? Request Customized Data Now!

Things to know

What is the population of Allegheny County, PA under 18?

Allegheny County's population under the age of 18 is 235,550, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 18.90% of the total resident population of Allegheny County, PA.

What is the aging population in Allegheny County, PA?

Allegheny County's population aged 65 years and above was 235,342. As per the U.S. Census Bureau's American Community Survey, this population is 18.89% of the entire population.

References

Datasets

Explore datasets by year of publication.
2023
Allegheny County, PA Age Group Population Dataset: A complete breakdown of Allegheny County age demographics from 0 to 85 years, distributed across 18 age groups
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Allegheny 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 Allegheny County. The dataset can be utilized to understand the population distribution of Allegheny County by age. For example, using this dataset, we can identify the largest age group in Allegheny County.

Key observations

The largest age group in Allegheny County, PA was for the group of age 30-34 years with a population of 95,850 (7.69%), according to the 2021 American Community Survey. At the same time, the smallest age group in Allegheny County, PA was the 80-84 years with a population of 25,712 (2.06%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Allegheny County population by age group

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Allegheny County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Allegheny 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 Allegheny County Population by Age. You can refer the same here

Allegheny County, PA Age Cohorts Dataset: Children, Working Adults, and Seniors in Allegheny County - Population and Percentage Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Allegheny 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 Allegheny 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 $b3_v1 with a poulation of $b3_v2 ($b3_v3 of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Allegheny County population by age cohort

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Allegheny County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Allegheny County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Allegheny 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 Allegheny County Population by Age. You can refer the same here

Allegheny County, PA Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Allegheny County, PA population pyramid, which represents the Allegheny County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey 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 Allegheny County, PA, is 23.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Allegheny County, PA, is 28.9.
  • Total dependency ratio for Allegheny County, PA is 52.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Allegheny County, PA is 3.5.

Allegheny County population pyramid

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Allegheny County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Allegheny County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Allegheny County for the selected age group is shown in the following column.
  • Total Population: The total population of the Allegheny 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 Allegheny 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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Allegheny County, PA Demographics Allegheny County, PA 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