Iowa County, IA Population by Age

The median age in Iowa County, IA is 42.9, as per 2021 ACS 5-Year Estimates. Of the total population, 19.09% were under the age of 15, 16.23% aged 15 to 29, 45.96% aged 30 to 64, 16.18% aged 65 to 84, and 2.55% were 85 years of age and older.
Neilsberg Research Avatar
Updated Sep 17, 2023

Iowa County, IA population age distribution

A complete breakdown of Iowa 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 931 5.61%
5 to 9 years 997 6.01%
10 to 14 years 1,240 7.47%
15 to 19 years 998 6.01%
20 to 24 years 847 5.1%
25 to 29 years 848 5.11%
30 to 34 years 866 5.22%
35 to 39 years 951 5.73%
40 to 44 years 1,031 6.21%
45 to 49 years 910 5.48%
50 to 54 years 1,237 7.45%
55 to 59 years 1,324 7.98%
60 to 64 years 1,308 7.88%
65 to 69 years 884 5.33%
70 to 74 years 794 4.78%
75 to 79 years 579 3.49%
80 to 84 years 428 2.58%
85 years and over 423 2.55%
Exploring Iowa County's Diversity? Request Customized Data Now!

Iowa County, IA population by age group

Key stats
5,013
Population under 25 years
3,696
Population aged 25-44
4,779
Population aged 45-64
3,108
Population aged 65+

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

The graph shows Iowa 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
Iowa County, IA population by age group. The largest age group was 55-59 years with a poulation of 1,324 (7.98% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Iowa County, IA was for the group of age 55-59 years with a population of 1,324 (7.98%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Iowa County, IA was the 85+ years with a population of 423 (2.55%).

Iowa County, IA population by age cohort

To better understand the age distribution of Iowa County, IA'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 Iowa 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.
Iowa County, IA 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 9,637 (58.07% 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 3,851 23.2%
18 to 64 years 9,637 58.07%
85 years and over 3,108 18.73%
Exploring Iowa County's Diversity? Request Customized Data Now!

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

  • Iowa County's population under 18 was 23.20%, compared to the 22.51% nationwide.
  • Iowa County's working population (between 18 and 64) was 58.07%, compared to 61.45% nationwide.
  • Iowa County's elderly or the senior population (over 65 age) was 18.73% as compared to 16.04% nationwide.

Iowa County, IA population pyramid

Population pyramid for Iowa County, IA 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 Iowa County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Iowa County, IA, is 30.7.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Iowa County, IA, is 30.1.
  • Total dependency ratio for Iowa County, IA is 60.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Iowa County, IA is 3.3.
The graph shows Iowa 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.
Iowa County, IA population pyramid i.e. Iowa County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Iowa County, IA's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 512 419 931
5 to 9 years 601 396 997
10 to 14 years 555 685 1,240
15 to 19 years 510 488 998
20 to 24 years 430 417 847
25 to 29 years 454 394 848
30 to 34 years 433 433 866
35 to 39 years 469 482 951
40 to 44 years 533 498 1,031
45 to 49 years 454 456 910
50 to 54 years 658 579 1,237
55 to 59 years 663 661 1,324
60 to 64 years 699 609 1,308
65 to 69 years 485 399 884
70 to 74 years 375 419 794
75 to 79 years 230 349 579
80 to 84 years 191 237 428
85 years and over 150 273 423
Exploring Iowa County's Diversity? Request Customized Data Now!

Things to know

What is the population of Iowa County, IA under 18?

Iowa County's population under the age of 18 is 3,851, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.20% of the total resident population of Iowa County, IA.

What is the aging population in Iowa County, IA?

Iowa County's population aged 65 years and above was 3,108. As per the U.S. Census Bureau's American Community Survey, this population is 18.73% of the entire population.

References

Datasets

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

Key observations

The largest age group in Iowa County, IA was for the group of age 55-59 years with a population of 1,324 (7.98%), according to the 2021 American Community Survey. At the same time, the smallest age group in Iowa County, IA was the 85+ years with a population of 423 (2.55%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Iowa County, IA Age Cohorts Dataset: Children, Working Adults, and Seniors in Iowa 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 Iowa 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 Iowa 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.

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

Iowa County, IA 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 Iowa County, IA population pyramid, which represents the Iowa 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 Iowa County, IA, is 30.7.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Iowa County, IA, is 30.1.
  • Total dependency ratio for Iowa County, IA is 60.8.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Iowa County, IA is 3.3.

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

Explore more

Population of places that contain Iowa County

About the author

Neilsberg Research Avatar
Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

Share

This article is for informational purposes only and is not intended to be legal or tax advice. We recommend that you consult with a qualified professional such as a lawyer or accountant before making a decision. Many of the products and services featured here are from our affiliate partners. We may receive commissions on purchases made from our chosen links. Read advertiser disclosure.