Riley County, KS Population by Age

The median age in Riley County, KS is 25.5, as per 2021 ACS 5-Year Estimates. Of the total population, 14.09% were under the age of 15, 44.30% aged 15 to 29, 32.19% aged 30 to 64, 8.06% aged 65 to 84, and 1.36% were 85 years of age and older.
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Updated Sep 17, 2023

Riley County, KS population age distribution

A complete breakdown of Riley 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 3,867 5.33%
5 to 9 years 2,996 4.13%
10 to 14 years 3,367 4.64%
15 to 19 years 7,452 10.26%
20 to 24 years 17,707 24.39%
25 to 29 years 7,002 9.64%
30 to 34 years 4,925 6.78%
35 to 39 years 4,444 6.12%
40 to 44 years 2,814 3.88%
45 to 49 years 2,713 3.74%
50 to 54 years 2,725 3.75%
55 to 59 years 2,725 3.75%
60 to 64 years 3,028 4.17%
65 to 69 years 2,300 3.17%
70 to 74 years 1,839 2.53%
75 to 79 years 1,234 1.7%
80 to 84 years 478 0.66%
85 years and over 986 1.36%
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Riley County, KS population by age group

Key stats
35,389
Population under 25 years
19,185
Population aged 25-44
11,191
Population aged 45-64
6,837
Population aged 65+

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

The graph shows Riley 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
Riley County, KS population by age group. The largest age group was 20-24 years with a poulation of 17,707 (24.39% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Riley County, KS was for the group of age 20-24 years with a population of 17,707 (24.39%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Riley County, KS was the 80-84 years with a population of 478 (0.66%).

Riley County, KS population by age cohort

To better understand the age distribution of Riley County, KS'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 Riley 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.
Riley County, KS 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 53,766 (74.06% 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 11,999 16.53%
18 to 64 years 53,766 74.06%
85 years and over 6,837 9.42%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Riley County's population under 18 was 16.53%, compared to the 22.51% nationwide.
  • Riley County's working population (between 18 and 64) was 74.06%, compared to 61.45% nationwide.
  • Riley County's elderly or the senior population (over 65 age) was 9.42% as compared to 16.04% nationwide.

Riley County, KS population pyramid

Population pyramid for Riley County, KS 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 Riley County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Riley County, KS, is 18.4.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Riley County, KS, is 12.3.
  • Total dependency ratio for Riley County, KS is 30.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Riley County, KS is 8.1.
The graph shows Riley 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.
Riley County, KS population pyramid i.e. Riley County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Riley County, KS's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 1,951 1,916 3,867
5 to 9 years 1,565 1,431 2,996
10 to 14 years 1,660 1,707 3,367
15 to 19 years 3,597 3,855 7,452
20 to 24 years 10,199 7,508 17,707
25 to 29 years 4,075 2,927 7,002
30 to 34 years 2,619 2,306 4,925
35 to 39 years 2,332 2,112 4,444
40 to 44 years 1,444 1,370 2,814
45 to 49 years 1,319 1,394 2,713
50 to 54 years 1,410 1,315 2,725
55 to 59 years 1,279 1,446 2,725
60 to 64 years 1,464 1,564 3,028
65 to 69 years 1,193 1,107 2,300
70 to 74 years 770 1,069 1,839
75 to 79 years 519 715 1,234
80 to 84 years 186 292 478
85 years and over 443 543 986
Exploring Riley County's Diversity? Request Customized Data Now!

Things to know

What is the population of Riley County, KS under 18?

Riley County's population under the age of 18 is 11,999, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 16.53% of the total resident population of Riley County, KS.

What is the aging population in Riley County, KS?

Riley County's population aged 65 years and above was 6,837. As per the U.S. Census Bureau's American Community Survey, this population is 9.42% of the entire population.

References

Datasets

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

Key observations

The largest age group in Riley County, KS was for the group of age 20-24 years with a population of 17,707 (24.39%), according to the 2021 American Community Survey. At the same time, the smallest age group in Riley County, KS was the 80-84 years with a population of 478 (0.66%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Riley County, KS Age Cohorts Dataset: Children, Working Adults, and Seniors in Riley 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 Riley 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 Riley 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.

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

Riley County, KS 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 Riley County, KS population pyramid, which represents the Riley 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 Riley County, KS, is 18.4.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Riley County, KS, is 12.3.
  • Total dependency ratio for Riley County, KS is 30.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Riley County, KS is 8.1.

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

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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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