Oak Brook, IL Population by Age

The median age in Oak Brook, IL is 52.5, as per 2018-2022 ACS 5 -Year Estimates. Of the total population, 18.08% were under the age of 15, 13.11% aged 15 to 29, 34.18% aged 30 to 64, 29.25% aged 65 to 84, and 5.37% were 85 years of age and older.
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Updated Jul 26, 2024

Oak Brook, IL population age distributions

A complete breakdown of Oak Brook'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 330 4.09%
5 to 9 years 481 5.96%
10 to 14 years 648 8.03%
15 to 19 years 433 5.37%
20 to 24 years 467 5.79%
25 to 29 years 157 1.95%
30 to 34 years 133 1.65%
35 to 39 years 263 3.26%
40 to 44 years 543 6.73%
45 to 49 years 407 5.05%
50 to 54 years 448 5.55%
55 to 59 years 697 8.64%
60 to 64 years 266 3.3%
65 to 69 years 578 7.17%
70 to 74 years 804 9.97%
75 to 79 years 481 5.96%
80 to 84 years 496 6.15%
85 years and over 433 5.37%
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Oak Brook, IL population by age group

Key stats
2,359
Population under 25 years
1,096
Population aged 25-44
1,818
Population aged 45-64
2,792
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022

FIGURE 1

Oak Brook, IL population by age group.

The largest age group is 70 to 74 years with a population of 804 (9.97% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

The largest age group in Oak Brook, IL was for the group of age 70 to 74 years with a population of 804 (9.97%), according to the 2018-2022 American Community Survey.

At the same time, the smallest age group in Oak Brook, IL was the 30 to 34 years with a population of 133 (1.65%).

Oak Brook, IL population by age cohort

To better understand the age distribution of Oak Brook, 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

FIGURE 2

Oak Brook, IL population by age cohort

The largest age group was 18 to 64 years with a population of 3,472 (43.05% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Oak Brook, IL population by age cohort

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

Age Group Population % of Total Population
Under 18 years 1,801 22.33%
18 to 64 years 3,472 43.05%
65 years and over 2,792 34.62%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Oak Brook 's population under 18 was 22.33%, compared to the 22.11% nationwide.
  • Oak Brook's working population (between 18 and 64) was 43.05%, compared to 61.36% nationwide.
  • Oak Brook's elderly or the senior population (over 65 age) was 34.62% as compared to 16.53% nationwide.

Oak Brook, IL population pyramid

Population pyramid for Oak Brook, 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 Oak Brook's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Oak Brook, IL, is 38.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Oak Brook, IL, is 73.2.
  • Total dependency ratio for Oak Brook, IL is 111.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Oak Brook, IL is 1.4.

FIGURE 3

Oak Brook, IL population pyramid

Oak Brook 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) 2018-2022 5-Year Estimates.

Oak Brook, IL population pyramid

Here's the Oak Brook, IL's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 114 216 330
5 to 9 years 244 237 481
10 to 14 years 192 456 648
15 to 19 years 211 222 433
20 to 24 years 279 188 467
25 to 29 years 64 93 157
30 to 34 years 75 58 133
35 to 39 years 121 142 263
40 to 44 years 252 291 543
45 to 49 years 159 248 407
50 to 54 years 213 235 448
55 to 59 years 492 205 697
60 to 64 years 120 146 266
65 to 69 years 228 350 578
70 to 74 years 463 341 804
75 to 79 years 223 258 481
80 to 84 years 195 301 496
85 years and over 104 329 433
Exploring Oak Brook's Diversity? Request Customized Data Now!

Things to know

What is the population of Oak Brook, IL under 18?

Oak Brook's population under the age of 18 is 1,801, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.33% of the total resident population of Oak Brook, IL.

What is the aging population in Oak Brook, IL?

Oak Brook's population aged 65 years and above was 2,792. As per the U.S. Census Bureau's American Community Survey, this population is 34.62% of the entire population.

References

Datasets

Explore datasets by year of publication.
2024
Oak Brook, IL Age Group Population Dataset: A Complete Breakdown of Oak Brook Age Demographics from 0 to 85 Years and Over, Distributed Across 18 Age Groups // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Oak Brook, IL was for the group of age 70 to 74 years years with a population of 804 (9.97%), according to the ACS 2018-2022 5-Year Estimates. At the same time, the smallest age group in Oak Brook, IL was the 30 to 34 years years with a population of 133 (1.65%). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Oak Brook is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Oak Brook 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 Oak Brook Population by Age. You can refer the same here

Oak Brook, IL Age Cohorts Dataset: Children, Working Adults, and Seniors in Oak Brook - Population and Percentage Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the Oak Brook 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 Oak Brook. 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 3,472 (43.05% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Oak Brook population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Oak Brook is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Oak Brook 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 Oak Brook Population by Age. You can refer the same here

Oak Brook, IL Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Oak Brook, IL population pyramid, which represents the Oak Brook population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Oak Brook, IL, is 38.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Oak Brook, IL, is 73.2.
  • Total dependency ratio for Oak Brook, IL is 111.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Oak Brook, IL is 1.4.
Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Oak Brook population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Oak Brook for the selected age group is shown in the following column.
  • Population (Female): The female population in the Oak Brook for the selected age group is shown in the following column.
  • Total Population: The total population of the Oak Brook 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 Oak Brook 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 team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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