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Fall River County, SD Population by Age

The median age in Fall River County, SD is 54.5, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 13.72% were under the age of 15, 12.58% aged 15 to 29, 42.78% aged 30 to 64, 27.74% aged 65 to 84, and 3.19% were 85 years of age and older.
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By Neilsberg Research
Updated Feb 22, 2025

Fall River County, SD population age distributions

A complete breakdown of Fall River 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 303 4.22%
5 to 9 years 352 4.9%
10 to 14 years 330 4.6%
15 to 19 years 369 5.14%
20 to 24 years 255 3.55%
25 to 29 years 279 3.89%
30 to 34 years 358 4.99%
35 to 39 years 373 5.2%
40 to 44 years 195 2.72%
45 to 49 years 412 5.74%
50 to 54 years 464 6.46%
55 to 59 years 535 7.45%
60 to 64 years 734 10.22%
65 to 69 years 730 10.17%
70 to 74 years 633 8.82%
75 to 79 years 414 5.77%
80 to 84 years 214 2.98%
85 years and over 229 3.19%
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Fall River County, SD population by age group

Key stats
1,609
Population under 25 years
1,205
Population aged 25-44
2,145
Population aged 45-64
2,220
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2019-2023

FIGURE 1

Fall River County, SD population by age group.

The largest age group is 60 to 64 years with a population of 734 (10.22% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.
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The largest age group in Fall River County, SD was for the group of age 60 to 64 years with a population of 734 (10.22%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Fall River County, SD was the 40 to 44 years with a population of 195 (2.72%).

Fall River County, SD population by age cohort

To better understand the age distribution of Fall River County, SD'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

Fall River County, SD population by age cohort

The largest age group was 18 to 64 years with a population of 3,746 (52.18% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.
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Fall River County, SD population by age cohort

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

Age Group Population % of Total Population
Under 18 years 1,213 16.9%
18 to 64 years 3,746 52.18%
65 years and over 2,220 30.92%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Fall River County 's population under 18 was 16.90%, compared to the 22.16% nationwide.
  • Fall River County's working population (between 18 and 64) was 52.18%, compared to 61% nationwide.
  • Fall River County's elderly or the senior population (over 65 age) was 30.92% as compared to 16.84% nationwide.

Fall River County, SD population pyramid

Population pyramid for Fall River County, SD 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 Fall River County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Fall River County, SD, is 24.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Fall River County, SD, is 55.9.
  • Total dependency ratio for Fall River County, SD is 80.6.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Fall River County, SD is 1.8.

FIGURE 3

Fall River County, SD population pyramid

Fall River County 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) 2019-2023 5-Year Estimates.
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Fall River County, SD population pyramid

Here's the Fall River County, SD's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 145 158 303
5 to 9 years 141 211 352
10 to 14 years 160 170 330
15 to 19 years 177 192 369
20 to 24 years 123 132 255
25 to 29 years 166 113 279
30 to 34 years 133 225 358
35 to 39 years 216 157 373
40 to 44 years 121 74 195
45 to 49 years 228 184 412
50 to 54 years 211 253 464
55 to 59 years 224 311 535
60 to 64 years 399 335 734
65 to 69 years 394 336 730
70 to 74 years 300 333 633
75 to 79 years 187 227 414
80 to 84 years 107 107 214
85 years and over 114 115 229
Exploring Fall River County's Diversity? Request Customized Data Now!

Things to know

What is the population of Fall River County, SD under 18?

Fall River County's population under the age of 18 is 1,213, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 16.90% of the total resident population of Fall River County, SD.

What is the aging population in Fall River County, SD?

Fall River County's population aged 65 years and above was 2,220. As per the U.S. Census Bureau's American Community Survey, this population is 30.92% of the entire population.

References

Datasets

Explore datasets by year of publication.
2025
Fall River County, SD Age Group Population Dataset: A Complete Breakdown of Fall River County Age Demographics from 0 to 85 Years and Over, Distributed Across 18 Age Groups // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Fall River County, SD was for the group of age 60 to 64 years years with a population of 734 (10.22%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Fall River County, SD was the 40 to 44 years years with a population of 195 (2.72%). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Fall River County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Fall River 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 Fall River County Population by Age. You can refer the same here

Fall River County, SD Age Cohorts Dataset: Children, Working Adults, and Seniors in Fall River County - Population and Percentage Analysis // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the Fall River 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 Fall River 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 18 to 64 years with a poulation of 3,746 (52.18% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Fall River County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Fall River County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Fall River 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 Fall River County Population by Age. You can refer the same here

Fall River County, SD Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis // 2025 Edition
Last updated February 22, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Fall River County, SD population pyramid, which represents the Fall River County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Fall River County, SD, is 24.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Fall River County, SD, is 55.9.
  • Total dependency ratio for Fall River County, SD is 80.6.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Fall River County, SD is 1.8.
Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 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 Fall River County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Fall River County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Fall River County for the selected age group is shown in the following column.
  • Total Population: The total population of the Fall River 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 Fall River 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.

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Collection 5 Resources