Download
Share
Contents
Save
Collection 5 Resources

St. Charles County, MO Population by Age

The median age in St. Charles County, MO is 39.2, as per 2021 ACS 5-Year Estimates. Of the total population, 19.12% were under the age of 15, 18.45% aged 15 to 29, 47.09% aged 30 to 64, 13.74% aged 65 to 84, and 1.60% were 85 years of age and older.
Neilsberg Research Avatar
By Neilsberg Research
Updated Sep 17, 2023

St. Charles County, MO population age distribution

A complete breakdown of St. Charles 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 23,126 5.75%
5 to 9 years 26,302 6.54%
10 to 14 years 27,505 6.84%
15 to 19 years 26,402 6.56%
20 to 24 years 23,759 5.9%
25 to 29 years 24,085 5.99%
30 to 34 years 26,738 6.65%
35 to 39 years 28,163 7%
40 to 44 years 27,234 6.77%
45 to 49 years 25,602 6.36%
50 to 54 years 26,529 6.59%
55 to 59 years 28,553 7.1%
60 to 64 years 26,665 6.63%
65 to 69 years 21,198 5.27%
70 to 74 years 16,157 4.02%
75 to 79 years 10,853 2.7%
80 to 84 years 7,073 1.76%
85 years and over 6,433 1.6%
Exploring California's Diversity? Request Customized Data Now!

TABLE OF CONTENTS

St. Charles County, MO population by age group

Key stats
127,094
Population under 25 years
106,220
Population aged 25-44
107,349
Population aged 45-64
61,714
Population aged 65+

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

The graph shows St. Charles 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
St. Charles County, MO population by age group. The largest age group was 55-59 years with a poulation of 28,553 (7.10% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in St. Charles County, MO was for the group of age 55-59 years with a population of 28,553 (7.10%), according to the 2021 American Community Survey.

At the same time, the smallest age group in St. Charles County, MO was the 85+ years with a population of 6,433 (1.60%).

St. Charles County, MO population by age cohort

To better understand the age distribution of St. Charles County, MO'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 St. Charles 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.
St. Charles County, MO 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 246,909 (61.36% 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 93,754 23.3%
18 to 64 years 246,909 61.36%
85 years and over 61,714 15.34%
Exploring California's Diversity? Request Customized Data Now!

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

  • St. Charles County's population under 18 was 23.30%, compared to the 22.51% nationwide.
  • St. Charles County's working population (between 18 and 64) was 61.36%, compared to 61.45% nationwide.
  • St. Charles County's elderly or the senior population (over 65 age) was 15.34% as compared to 16.04% nationwide.

St. Charles County, MO population pyramid

Population pyramid for St. Charles County, MO 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 St. Charles County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for St. Charles County, MO, is 29.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for St. Charles County, MO, is 23.4.
  • Total dependency ratio for St. Charles County, MO is 52.6.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for St. Charles County, MO is 4.3.
The graph shows St. Charles 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.
St. Charles County, MO population pyramid i.e. St. Charles County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the St. Charles County, MO's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 11,732 11,394 23,126
5 to 9 years 13,259 13,043 26,302
10 to 14 years 14,279 13,226 27,505
15 to 19 years 13,452 12,950 26,402
20 to 24 years 12,176 11,583 23,759
25 to 29 years 12,218 11,867 24,085
30 to 34 years 13,309 13,429 26,738
35 to 39 years 14,676 13,487 28,163
40 to 44 years 13,285 13,949 27,234
45 to 49 years 12,736 12,866 25,602
50 to 54 years 13,111 13,418 26,529
55 to 59 years 13,895 14,658 28,553
60 to 64 years 13,180 13,485 26,665
65 to 69 years 9,854 11,344 21,198
70 to 74 years 7,517 8,640 16,157
75 to 79 years 4,757 6,096 10,853
80 to 84 years 2,930 4,143 7,073
85 years and over 2,520 3,913 6,433
Exploring California's Diversity? Request Customized Data Now!

Things to know

What is the population of St. Charles County, MO under 18?

St. Charles County's population under the age of 18 is 93,754, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.30% of the total resident population of St. Charles County, MO.

What is the aging population in St. Charles County, MO?

St. Charles County's population aged 65 years and above was 61,714. As per the U.S. Census Bureau's American Community Survey, this population is 15.34% of the entire population.

References

Datasets

St. Charles County, MO Age Group Population Dataset: A complete breakdown of St. Charles County age demographics from 0 to 85 years, distributed across 18 age groups
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in St. Charles County, MO was for the group of age 55-59 years with a population of 28,553 (7.10%), according to the 2021 American Community Survey. At the same time, the smallest age group in St. Charles County, MO was the 85+ years with a population of 6,433 (1.60%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

St. Charles County, MO Age Cohorts Dataset: Children, Working Adults, and Seniors in St. Charles County - Population and Percentage Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the St. Charles 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 St. Charles 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.

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

St. Charles County, MO Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the St. Charles County, MO population pyramid, which represents the St. Charles 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 St. Charles County, MO, is 29.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for St. Charles County, MO, is 23.4.
  • Total dependency ratio for St. Charles County, MO is 52.6.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for St. Charles County, MO is 4.3.

St. Charles 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 St. Charles County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the St. Charles County for the selected age group is shown in the following column.
  • Population (Female): The female population in the St. Charles County for the selected age group is shown in the following column.
  • Total Population: The total population of the St. Charles 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 St. Charles County Population by Age. You can refer the same here

Explore related topics

St. Charles County, MO Demographics St. Charles County, MO 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