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Janesville Town, Wisconsin Population by Age

The median age in Janesville Town, Wisconsin is 52.3, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 14.83% were under the age of 15, 9.69% aged 15 to 29, 47.70% aged 30 to 64, 24.81% aged 65 to 84, and 2.98% were 85 years of age and older.
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By Neilsberg Research
Updated Feb 22, 2025

Janesville Town, Wisconsin population age distributions

A complete breakdown of Janesville town'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 180 4.87%
5 to 9 years 143 3.87%
10 to 14 years 225 6.09%
15 to 19 years 240 6.49%
20 to 24 years 69 1.87%
25 to 29 years 49 1.33%
30 to 34 years 170 4.6%
35 to 39 years 117 3.17%
40 to 44 years 234 6.33%
45 to 49 years 247 6.68%
50 to 54 years 292 7.9%
55 to 59 years 303 8.2%
60 to 64 years 400 10.82%
65 to 69 years 525 14.2%
70 to 74 years 238 6.44%
75 to 79 years 86 2.33%
80 to 84 years 68 1.84%
85 years and over 110 2.98%
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Janesville Town, Wisconsin population by age group

Key stats
857
Population under 25 years
570
Population aged 25-44
1,242
Population aged 45-64
1,027
Population aged 65+

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

FIGURE 1

Janesville Town, Wisconsin population by age group.

The largest age group is 65 to 69 years with a population of 525 (14.20% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.
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The largest age group in Janesville Town, Wisconsin was for the group of age 65 to 69 years with a population of 525 (14.20%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Janesville Town, Wisconsin was the 25 to 29 years with a population of 49 (1.33%).

Janesville Town, Wisconsin population by age cohort

To better understand the age distribution of Janesville Town, Wisconsin'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

Janesville Town, Wisconsin population by age cohort

The largest age group was 18 to 64 years with a population of 1,965 (53.17% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.
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Janesville Town, Wisconsin population by age cohort

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

Age Group Population % of Total Population
Under 18 years 704 19.05%
18 to 64 years 1,965 53.17%
65 years and over 1,027 27.79%
Exploring Janesville town's Diversity? Request Customized Data Now!

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

  • Janesville town 's population under 18 was 19.05%, compared to the 22.16% nationwide.
  • Janesville town's working population (between 18 and 64) was 53.17%, compared to 61% nationwide.
  • Janesville town's elderly or the senior population (over 65 age) was 27.79% as compared to 16.84% nationwide.

Janesville Town, Wisconsin population pyramid

Population pyramid for Janesville Town, Wisconsin 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 Janesville town's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Janesville Town, Wisconsin, is 25.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Janesville Town, Wisconsin, is 48.4.
  • Total dependency ratio for Janesville Town, Wisconsin is 74.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Janesville Town, Wisconsin is 2.1.

FIGURE 3

Janesville Town, Wisconsin population pyramid

Janesville town 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.
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Janesville Town, Wisconsin population pyramid

Here's the Janesville Town, Wisconsin's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 91 89 180
5 to 9 years 45 98 143
10 to 14 years 85 140 225
15 to 19 years 142 98 240
20 to 24 years 27 42 69
25 to 29 years 40 9 49
30 to 34 years 113 57 170
35 to 39 years 70 47 117
40 to 44 years 82 152 234
45 to 49 years 125 122 247
50 to 54 years 175 117 292
55 to 59 years 130 173 303
60 to 64 years 168 232 400
65 to 69 years 230 295 525
70 to 74 years 147 91 238
75 to 79 years 58 28 86
80 to 84 years 34 34 68
85 years and over 48 62 110
Exploring Janesville town's Diversity? Request Customized Data Now!

Things to know

What is the population of Janesville Town, Wisconsin under 18?

Janesville town's population under the age of 18 is 704, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 19.05% of the total resident population of Janesville Town, Wisconsin.

What is the aging population in Janesville Town, Wisconsin?

Janesville town's population aged 65 years and above was 1,027. As per the U.S. Census Bureau's American Community Survey, this population is 27.79% of the entire population.

References

Datasets

Explore datasets by year of publication.
2025
Janesville Town, Wisconsin Age Group Population Dataset: A Complete Breakdown of Janesville town 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 Janesville town 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 Janesville town. The dataset can be utilized to understand the population distribution of Janesville town by age. For example, using this dataset, we can identify the largest age group in Janesville town.

Key observations

The largest age group in Janesville Town, Wisconsin was for the group of age 65 to 69 years years with a population of 525 (14.20%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Janesville Town, Wisconsin was the 25 to 29 years years with a population of 49 (1.33%). 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 Janesville town is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Janesville town 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 Janesville town Population by Age. You can refer the same here

Janesville Town, Wisconsin Age Cohorts Dataset: Children, Working Adults, and Seniors in Janesville town - 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 Janesville town 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 Janesville town. 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 1,965 (53.17% 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 Janesville town population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Janesville town is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Janesville town 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 Janesville town Population by Age. You can refer the same here

Janesville Town, Wisconsin 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 Janesville Town, Wisconsin population pyramid, which represents the Janesville town 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 Janesville Town, Wisconsin, is 25.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Janesville Town, Wisconsin, is 48.4.
  • Total dependency ratio for Janesville Town, Wisconsin is 74.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Janesville Town, Wisconsin is 2.1.
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 Janesville town population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Janesville town for the selected age group is shown in the following column.
  • Population (Female): The female population in the Janesville town for the selected age group is shown in the following column.
  • Total Population: The total population of the Janesville town 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 Janesville town 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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Janesville Town, Wisconsin Demographics Janesville Town, Wisconsin Population

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Collection 5 Resources