Download
Share
Contents
Save
Collection 5 Resources

South Dakota Population by Age

The median age in South Dakota is 37.1, as per 2021 ACS 5-Year Estimates. Of the total population, 20.81% were under the age of 15, 19.77% aged 15 to 29, 42.77% aged 30 to 64, 14.53% aged 65 to 84, and 2.12% were 85 years of age and older.
Neilsberg Research Avatar
By Neilsberg Research
Updated Sep 17, 2023

South Dakota population age distribution

A complete breakdown of South Dakota'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 59,538 6.75%
5 to 9 years 62,223 7.06%
10 to 14 years 61,727 7%
15 to 19 years 59,943 6.8%
20 to 24 years 58,119 6.59%
25 to 29 years 56,276 6.38%
30 to 34 years 57,200 6.49%
35 to 39 years 59,201 6.71%
40 to 44 years 47,832 5.42%
45 to 49 years 46,539 5.28%
50 to 54 years 49,523 5.62%
55 to 59 years 57,430 6.51%
60 to 64 years 59,450 6.74%
65 to 69 years 50,510 5.73%
70 to 74 years 37,946 4.3%
75 to 79 years 23,170 2.63%
80 to 84 years 16,459 1.87%
85 years and over 18,699 2.12%
Exploring South Dakota's Diversity? Request Customized Data Now!

TABLE OF CONTENTS

South Dakota population by age group

Key stats
301,550
Population under 25 years
220,509
Population aged 25-44
212,942
Population aged 45-64
146,784
Population aged 65+

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

The graph shows South Dakota'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
South Dakota population by age group. The largest age group was 5-9 years with a poulation of 62,223 (7.06% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in South Dakota was for the group of age 5-9 years with a population of 62,223 (7.06%), according to the 2021 American Community Survey.

At the same time, the smallest age group in South Dakota was the 80-84 years with a population of 16,459 (1.87%).

South Dakota population by age cohort

To better understand the age distribution of South Dakota'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 South Dakota'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.
South Dakota 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 516,303 (58.55% 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 218,698 24.8%
18 to 64 years 516,303 58.55%
85 years and over 146,784 16.65%
Exploring South Dakota's Diversity? Request Customized Data Now!

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

  • South Dakota's population under 18 was 24.80%, compared to the 22.51% nationwide.
  • South Dakota's working population (between 18 and 64) was 58.55%, compared to 61.45% nationwide.
  • South Dakota's elderly or the senior population (over 65 age) was 16.65% as compared to 16.04% nationwide.

South Dakota population pyramid

Population pyramid for South Dakota 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 South Dakota's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for South Dakota, is 33.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for South Dakota, is 26.6.
  • Total dependency ratio for South Dakota is 59.9.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for South Dakota is 3.8.
The graph shows South Dakota'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.
South Dakota population pyramid i.e. South Dakota population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the South Dakota's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 30,241 29,297 59,538
5 to 9 years 31,312 30,911 62,223
10 to 14 years 31,887 29,840 61,727
15 to 19 years 31,183 28,760 59,943
20 to 24 years 29,732 28,387 58,119
25 to 29 years 29,783 26,493 56,276
30 to 34 years 29,735 27,465 57,200
35 to 39 years 31,491 27,710 59,201
40 to 44 years 24,035 23,797 47,832
45 to 49 years 24,131 22,408 46,539
50 to 54 years 25,160 24,363 49,523
55 to 59 years 28,366 29,064 57,430
60 to 64 years 30,469 28,981 59,450
65 to 69 years 25,824 24,686 50,510
70 to 74 years 18,592 19,354 37,946
75 to 79 years 10,886 12,284 23,170
80 to 84 years 7,161 9,298 16,459
85 years and over 6,473 12,226 18,699
Exploring South Dakota's Diversity? Request Customized Data Now!

Things to know

What is the population of South Dakota under 18?

South Dakota's population under the age of 18 is 218,698, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 24.80% of the total resident population of South Dakota.

What is the aging population in South Dakota?

South Dakota's population aged 65 years and above was 146,784. As per the U.S. Census Bureau's American Community Survey, this population is 16.65% of the entire population.

References

Datasets

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

Key observations

The largest age group in South Dakota was for the group of age 5-9 years with a population of 62,223 (7.06%), according to the 2021 American Community Survey. At the same time, the smallest age group in South Dakota was the 80-84 years with a population of 16,459 (1.87%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

South Dakota Age Cohorts Dataset: Children, Working Adults, and Seniors in South Dakota - 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 South Dakota 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 South Dakota. 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.

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

South Dakota 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 South Dakota population pyramid, which represents the South Dakota 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 South Dakota, is 33.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for South Dakota, is 26.6.
  • Total dependency ratio for South Dakota is 59.9.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for South Dakota is 3.8.

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

South Dakota Demographics South Dakota Population

Explore more

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.
Read more from Neilsberg Research ➔

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.
Collection 5 Resources