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Milwaukee County, WI Population by Age

The median age in Milwaukee County, WI is 35.1, as per 2021 ACS 5-Year Estimates. Of the total population, 20.28% were under the age of 15, 21.71% aged 15 to 29, 44.45% aged 30 to 64, 11.67% aged 65 to 84, and 1.90% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Milwaukee County, WI population age distribution

A complete breakdown of Milwaukee 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 63,413 6.75%
5 to 9 years 62,015 6.6%
10 to 14 years 65,049 6.93%
15 to 19 years 62,571 6.66%
20 to 24 years 62,860 6.69%
25 to 29 years 78,432 8.35%
30 to 34 years 73,382 7.81%
35 to 39 years 66,205 7.05%
40 to 44 years 56,572 6.02%
45 to 49 years 53,757 5.72%
50 to 54 years 54,559 5.81%
55 to 59 years 57,622 6.14%
60 to 64 years 55,300 5.89%
65 to 69 years 44,241 4.71%
70 to 74 years 32,686 3.48%
75 to 79 years 18,623 1.98%
80 to 84 years 14,002 1.49%
85 years and over 17,834 1.9%
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TABLE OF CONTENTS

Milwaukee County, WI population by age group

Key stats
315,908
Population under 25 years
274,591
Population aged 25-44
221,238
Population aged 45-64
127,386
Population aged 65+

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

The graph shows Milwaukee 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
Milwaukee County, WI population by age group. The largest age group was 25-29 years with a poulation of 78,432 (8.35% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Milwaukee County, WI was for the group of age 25-29 years with a population of 78,432 (8.35%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Milwaukee County, WI was the 80-84 years with a population of 14,002 (1.49%).

Milwaukee County, WI population by age cohort

To better understand the age distribution of Milwaukee County, WI'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 Milwaukee 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.
Milwaukee County, WI 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 584,724 (62.26% 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 227,013 24.17%
18 to 64 years 584,724 62.26%
85 years and over 127,386 13.56%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Milwaukee County's population under 18 was 24.17%, compared to the 22.51% nationwide.
  • Milwaukee County's working population (between 18 and 64) was 62.26%, compared to 61.45% nationwide.
  • Milwaukee County's elderly or the senior population (over 65 age) was 13.56% as compared to 16.04% nationwide.

Milwaukee County, WI population pyramid

Population pyramid for Milwaukee County, WI 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 Milwaukee County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Milwaukee County, WI, is 30.7.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Milwaukee County, WI, is 20.5.
  • Total dependency ratio for Milwaukee County, WI is 51.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Milwaukee County, WI is 4.9.
The graph shows Milwaukee 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.
Milwaukee County, WI population pyramid i.e. Milwaukee County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Milwaukee County, WI's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 32,242 31,171 63,413
5 to 9 years 31,297 30,718 62,015
10 to 14 years 33,629 31,420 65,049
15 to 19 years 31,782 30,789 62,571
20 to 24 years 31,164 31,696 62,860
25 to 29 years 38,197 40,235 78,432
30 to 34 years 35,789 37,593 73,382
35 to 39 years 32,272 33,933 66,205
40 to 44 years 27,451 29,121 56,572
45 to 49 years 26,419 27,338 53,757
50 to 54 years 26,819 27,740 54,559
55 to 59 years 27,778 29,844 57,622
60 to 64 years 26,563 28,737 55,300
65 to 69 years 20,887 23,354 44,241
70 to 74 years 14,890 17,796 32,686
75 to 79 years 8,012 10,611 18,623
80 to 84 years 5,958 8,044 14,002
85 years and over 5,425 12,409 17,834
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Things to know

What is the population of Milwaukee County, WI under 18?

Milwaukee County's population under the age of 18 is 227,013, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 24.17% of the total resident population of Milwaukee County, WI.

What is the aging population in Milwaukee County, WI?

Milwaukee County's population aged 65 years and above was 127,386. As per the U.S. Census Bureau's American Community Survey, this population is 13.56% of the entire population.

References

Datasets

Milwaukee County, WI Age Group Population Dataset: A complete breakdown of Milwaukee County age demographics from 0 to 85 years, distributed across 18 age groups
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Milwaukee County, WI was for the group of age 25-29 years with a population of 78,432 (8.35%), according to the 2021 American Community Survey. At the same time, the smallest age group in Milwaukee County, WI was the 80-84 years with a population of 14,002 (1.49%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Milwaukee County, WI Age Cohorts Dataset: Children, Working Adults, and Seniors in Milwaukee County - Population and Percentage Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Milwaukee 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 Milwaukee 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.

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

Milwaukee County, WI Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Milwaukee County, WI population pyramid, which represents the Milwaukee 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 Milwaukee County, WI, is 30.7.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Milwaukee County, WI, is 20.5.
  • Total dependency ratio for Milwaukee County, WI is 51.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Milwaukee County, WI is 4.9.

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

Explore related topics

Milwaukee County, WI Demographics Milwaukee County, WI 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