Hamilton County, IN Population by Age

The median age in Hamilton County, IN is 37.6, as per 2021 ACS 5-Year Estimates. Of the total population, 21.85% were under the age of 15, 17.98% aged 15 to 29, 47.66% aged 30 to 64, 11.02% aged 65 to 84, and 1.49% were 85 years of age and older.
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Updated Sep 17, 2023

Hamilton County, IN population age distribution

A complete breakdown of Hamilton 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 21,378 6.26%
5 to 9 years 25,945 7.59%
10 to 14 years 27,319 8%
15 to 19 years 24,528 7.18%
20 to 24 years 18,605 5.45%
25 to 29 years 18,294 5.36%
30 to 34 years 21,830 6.39%
35 to 39 years 27,002 7.9%
40 to 44 years 24,377 7.14%
45 to 49 years 25,264 7.4%
50 to 54 years 23,973 7.02%
55 to 59 years 22,174 6.49%
60 to 64 years 18,189 5.32%
65 to 69 years 16,065 4.7%
70 to 74 years 10,635 3.11%
75 to 79 years 6,875 2.01%
80 to 84 years 4,058 1.19%
85 years and over 5,105 1.49%
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Hamilton County, IN population by age group

Key stats
117,775
Population under 25 years
91,503
Population aged 25-44
89,600
Population aged 45-64
42,738
Population aged 65+

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

The graph shows Hamilton 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
Hamilton County, IN population by age group. The largest age group was 10-14 years with a poulation of 27,319 (8.00% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Hamilton County, IN was for the group of age 10-14 years with a population of 27,319 (8.00%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Hamilton County, IN was the 80-84 years with a population of 4,058 (1.19%).

Hamilton County, IN population by age cohort

To better understand the age distribution of Hamilton County, IN'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 Hamilton 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.
Hamilton County, IN 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 207,599 (60.77% 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 91,279 26.72%
18 to 64 years 207,599 60.77%
85 years and over 42,738 12.51%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Hamilton County's population under 18 was 26.72%, compared to the 22.51% nationwide.
  • Hamilton County's working population (between 18 and 64) was 60.77%, compared to 61.45% nationwide.
  • Hamilton County's elderly or the senior population (over 65 age) was 12.51% as compared to 16.04% nationwide.

Hamilton County, IN population pyramid

Population pyramid for Hamilton County, IN 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 Hamilton County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Hamilton County, IN, is 33.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Hamilton County, IN, is 19.1.
  • Total dependency ratio for Hamilton County, IN is 52.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Hamilton County, IN is 5.2.
The graph shows Hamilton 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.
Hamilton County, IN population pyramid i.e. Hamilton County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Hamilton County, IN's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 10,820 10,558 21,378
5 to 9 years 13,535 12,410 25,945
10 to 14 years 13,750 13,569 27,319
15 to 19 years 12,690 11,838 24,528
20 to 24 years 9,258 9,347 18,605
25 to 29 years 8,964 9,330 18,294
30 to 34 years 10,459 11,371 21,830
35 to 39 years 13,170 13,832 27,002
40 to 44 years 11,824 12,553 24,377
45 to 49 years 12,578 12,686 25,264
50 to 54 years 11,998 11,975 23,973
55 to 59 years 10,705 11,469 22,174
60 to 64 years 8,986 9,203 18,189
65 to 69 years 7,384 8,681 16,065
70 to 74 years 5,209 5,426 10,635
75 to 79 years 3,048 3,827 6,875
80 to 84 years 1,715 2,343 4,058
85 years and over 1,816 3,289 5,105
Exploring Hamilton County's Diversity? Request Customized Data Now!

Things to know

What is the population of Hamilton County, IN under 18?

Hamilton County's population under the age of 18 is 91,279, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 26.72% of the total resident population of Hamilton County, IN.

What is the aging population in Hamilton County, IN?

Hamilton County's population aged 65 years and above was 42,738. As per the U.S. Census Bureau's American Community Survey, this population is 12.51% of the entire population.

References

Datasets

Explore datasets by year of publication.
2023
Hamilton County, IN Age Group Population Dataset: A complete breakdown of Hamilton 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 Hamilton 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 Hamilton County. The dataset can be utilized to understand the population distribution of Hamilton County by age. For example, using this dataset, we can identify the largest age group in Hamilton County.

Key observations

The largest age group in Hamilton County, IN was for the group of age 10-14 years with a population of 27,319 (8.00%), according to the 2021 American Community Survey. At the same time, the smallest age group in Hamilton County, IN was the 80-84 years with a population of 4,058 (1.19%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Hamilton 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 Hamilton County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Hamilton 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 Hamilton County Population by Age. You can refer the same here

Hamilton County, IN Age Cohorts Dataset: Children, Working Adults, and Seniors in Hamilton 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 Hamilton 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 Hamilton 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.

Hamilton 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 Hamilton County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Hamilton County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Hamilton 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 Hamilton County Population by Age. You can refer the same here

Hamilton County, IN 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 Hamilton County, IN population pyramid, which represents the Hamilton 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 Hamilton County, IN, is 33.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Hamilton County, IN, is 19.1.
  • Total dependency ratio for Hamilton County, IN is 52.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Hamilton County, IN is 5.2.

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