Hampden County, MA Population by Age

The median age in Hampden County, MA is 39.8, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 17.14% were under the age of 15, 20.36% aged 15 to 29, 44.67% aged 30 to 64, 15.45% aged 65 to 84, and 2.38% were 85 years of age and older.
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Updated Feb 22, 2025

Hampden County, MA population age distributions

A complete breakdown of Hampden 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 24,363 5.26%
5 to 9 years 26,944 5.82%
10 to 14 years 28,066 6.06%
15 to 19 years 31,829 6.88%
20 to 24 years 31,773 6.86%
25 to 29 years 30,620 6.62%
30 to 34 years 30,914 6.68%
35 to 39 years 27,955 6.04%
40 to 44 years 28,604 6.18%
45 to 49 years 26,485 5.72%
50 to 54 years 29,424 6.36%
55 to 59 years 30,880 6.67%
60 to 64 years 32,478 7.02%
65 to 69 years 28,178 6.09%
70 to 74 years 20,793 4.49%
75 to 79 years 14,156 3.06%
80 to 84 years 8,396 1.81%
85 years and over 10,995 2.38%
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Hampden County, MA population by age group

Key stats
142,975
Population under 25 years
118,093
Population aged 25-44
119,267
Population aged 45-64
82,518
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2019-2023

FIGURE 1

Hampden County, MA population by age group.

The largest age group is 60 to 64 years with a population of 32,478 (7.02% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

The largest age group in Hampden County, MA was for the group of age 60 to 64 years with a population of 32,478 (7.02%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Hampden County, MA was the 80 to 84 years with a population of 8,396 (1.81%).

Hampden County, MA population by age cohort

To better understand the age distribution of Hampden County, MA'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

Hampden County, MA population by age cohort

The largest age group was 18 to 64 years with a population of 282,785 (61.10% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

Hampden County, MA population by age cohort

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

Age Group Population % of Total Population
Under 18 years 97,550 21.08%
18 to 64 years 282,785 61.1%
65 years and over 82,518 17.83%
Exploring Hampden 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:

  • Hampden County 's population under 18 was 21.08%, compared to the 22.16% nationwide.
  • Hampden County's working population (between 18 and 64) was 61.10%, compared to 61% nationwide.
  • Hampden County's elderly or the senior population (over 65 age) was 17.83% as compared to 16.84% nationwide.

Hampden County, MA population pyramid

Population pyramid for Hampden County, MA 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 Hampden County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Hampden County, MA, is 26.4.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Hampden County, MA, is 27.4.
  • Total dependency ratio for Hampden County, MA is 53.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Hampden County, MA is 3.6.

FIGURE 3

Hampden County, MA population pyramid

Hampden 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) 2019-2023 5-Year Estimates.

Hampden County, MA population pyramid

Here's the Hampden County, MA's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 12,564 11,799 24,363
5 to 9 years 12,794 14,150 26,944
10 to 14 years 15,509 12,557 28,066
15 to 19 years 16,450 15,379 31,829
20 to 24 years 16,034 15,739 31,773
25 to 29 years 15,481 15,139 30,620
30 to 34 years 15,415 15,499 30,914
35 to 39 years 13,180 14,775 27,955
40 to 44 years 14,036 14,568 28,604
45 to 49 years 12,522 13,963 26,485
50 to 54 years 14,090 15,334 29,424
55 to 59 years 15,067 15,813 30,880
60 to 64 years 15,527 16,951 32,478
65 to 69 years 14,099 14,079 28,178
70 to 74 years 8,768 12,025 20,793
75 to 79 years 6,302 7,854 14,156
80 to 84 years 3,395 5,001 8,396
85 years and over 3,773 7,222 10,995
Exploring Hampden County's Diversity? Request Customized Data Now!

Things to know

What is the population of Hampden County, MA under 18?

Hampden County's population under the age of 18 is 97,550, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.08% of the total resident population of Hampden County, MA.

What is the aging population in Hampden County, MA?

Hampden County's population aged 65 years and above was 82,518. As per the U.S. Census Bureau's American Community Survey, this population is 17.83% of the entire population.

References

Datasets

Explore datasets by year of publication.
2025
Hampden County, MA Age Group Population Dataset: A Complete Breakdown of Hampden County Age Demographics from 0 to 85 Years and Over, Distributed Across 18 Age Groups // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Hampden County, MA was for the group of age 60 to 64 years years with a population of 32,478 (7.02%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Hampden County, MA was the 80 to 84 years years with a population of 8,396 (1.81%). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Hampden County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Hampden 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 Hampden County Population by Age. You can refer the same here

Hampden County, MA Age Cohorts Dataset: Children, Working Adults, and Seniors in Hampden County - Population and Percentage Analysis // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the Hampden 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 Hampden 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 282,785 (61.10% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Hampden County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Hampden County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Hampden 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 Hampden County Population by Age. You can refer the same here

Hampden County, MA Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Hampden County, MA population pyramid, which represents the Hampden County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Hampden County, MA, is 26.4.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Hampden County, MA, is 27.4.
  • Total dependency ratio for Hampden County, MA is 53.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Hampden County, MA is 3.6.
Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Hampden County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Hampden County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Hampden County for the selected age group is shown in the following column.
  • Total Population: The total population of the Hampden 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 Hampden 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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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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