Marengo, IL Population by Age

The median age in Marengo, IL is 30.5, as per 2021 ACS 5-Year Estimates. Of the total population, 21.58% were under the age of 15, 27.38% aged 15 to 29, 36.77% aged 30 to 64, 11.51% aged 65 to 84, and 2.77% were 85 years of age and older.
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Updated Sep 17, 2023

Marengo, IL population age distribution

A complete breakdown of Marengo'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 583 7.81%
5 to 9 years 529 7.09%
10 to 14 years 499 6.68%
15 to 19 years 385 5.16%
20 to 24 years 753 10.09%
25 to 29 years 906 12.14%
30 to 34 years 390 5.22%
35 to 39 years 168 2.25%
40 to 44 years 410 5.49%
45 to 49 years 372 4.98%
50 to 54 years 362 4.85%
55 to 59 years 443 5.93%
60 to 64 years 600 8.04%
65 to 69 years 347 4.65%
70 to 74 years 138 1.85%
75 to 79 years 231 3.09%
80 to 84 years 143 1.92%
85 years and over 207 2.77%
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Marengo, IL population by age group

Key stats
2,749
Population under 25 years
1,874
Population aged 25-44
1,777
Population aged 45-64
1,066
Population aged 65+

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

The graph shows Marengo'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
Marengo, IL population by age group. The largest age group was 25-29 years with a poulation of 906 (12.14% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Marengo, IL was for the group of age 25-29 years with a population of 906 (12.14%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Marengo, IL was the 70-74 years with a population of 138 (1.85%).

Marengo, IL population by age cohort

To better understand the age distribution of Marengo, IL'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 Marengo'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.
Marengo, IL 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 4,487 (60.10% 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 1,913 25.62%
18 to 64 years 4,487 60.1%
85 years and over 1,066 14.28%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Marengo's population under 18 was 25.62%, compared to the 22.51% nationwide.
  • Marengo's working population (between 18 and 64) was 60.10%, compared to 61.45% nationwide.
  • Marengo's elderly or the senior population (over 65 age) was 14.28% as compared to 16.04% nationwide.

Marengo, IL population pyramid

Population pyramid for Marengo, IL 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 Marengo's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Marengo, IL, is 33.6.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Marengo, IL, is 22.3.
  • Total dependency ratio for Marengo, IL is 55.9.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Marengo, IL is 4.5.
The graph shows Marengo'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.
Marengo, IL population pyramid i.e. Marengo population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Marengo, IL's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 320 263 583
5 to 9 years 310 219 529
10 to 14 years 243 256 499
15 to 19 years 269 116 385
20 to 24 years 405 348 753
25 to 29 years 330 576 906
30 to 34 years 225 165 390
35 to 39 years 37 131 168
40 to 44 years 210 200 410
45 to 49 years 212 160 372
50 to 54 years 183 179 362
55 to 59 years 260 183 443
60 to 64 years 255 345 600
65 to 69 years 140 207 347
70 to 74 years 109 29 138
75 to 79 years 71 160 231
80 to 84 years 42 101 143
85 years and over 58 149 207
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Things to know

What is the population of Marengo, IL under 18?

Marengo's population under the age of 18 is 1,913, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 25.62% of the total resident population of Marengo, IL.

What is the aging population in Marengo, IL?

Marengo's population aged 65 years and above was 1,066. As per the U.S. Census Bureau's American Community Survey, this population is 14.28% of the entire population.

References

Datasets

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

Key observations

The largest age group in Marengo, IL was for the group of age 25-29 years with a population of 906 (12.14%), according to the 2021 American Community Survey. At the same time, the smallest age group in Marengo, IL was the 70-74 years with a population of 138 (1.85%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Marengo, IL Age Cohorts Dataset: Children, Working Adults, and Seniors in Marengo - 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 Marengo 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 Marengo. 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.

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

Marengo, IL 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 Marengo, IL population pyramid, which represents the Marengo 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 Marengo, IL, is 33.6.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Marengo, IL, is 22.3.
  • Total dependency ratio for Marengo, IL is 55.9.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Marengo, IL is 4.5.

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