Download
Share
Contents
Save
Collection 5 Resources

Jefferson County, ID Population by Age

The median age in Jefferson County, ID is 31.7, as per 2018-2022 ACS 5 -Year Estimates. Of the total population, 27.40% were under the age of 15, 20.40% aged 15 to 29, 40.75% aged 30 to 64, 10.33% aged 65 to 84, and 1.12% were 85 years of age and older.
Neilsberg Research Avatar
By Neilsberg Research
Updated Jul 26, 2024

Jefferson County, ID population age distributions

A complete breakdown of Jefferson 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 2,457 7.83%
5 to 9 years 2,928 9.33%
10 to 14 years 3,215 10.24%
15 to 19 years 2,661 8.48%
20 to 24 years 2,051 6.54%
25 to 29 years 1,689 5.38%
30 to 34 years 1,904 6.07%
35 to 39 years 2,107 6.71%
40 to 44 years 2,166 6.9%
45 to 49 years 1,812 5.77%
50 to 54 years 1,546 4.93%
55 to 59 years 1,444 4.6%
60 to 64 years 1,810 5.77%
65 to 69 years 1,537 4.9%
70 to 74 years 788 2.51%
75 to 79 years 683 2.18%
80 to 84 years 232 0.74%
85 years and over 353 1.12%
PREMIUM
Demographic Solutions for Every Need
Select your area of interest to discover how our data can empower your decisions.
Consumer Demographics
Understand your target market better with customized consumer demographic reports.
Market Segmentation
Identify and segment your target markets effectively with detailed demographic data.
Competitor Analysis
Gain insights into competitor regions with our comprehensive demographic analysis.
Trend Forecasting
Stay ahead with predictive insights based on historical demographic trends.
For any additional data requests, please reach out to research@neilsberg.com
Location Analysis
Assess potential development sites with detailed demographic reports.
Community Demographics
Understand the population characteristics of target areas with custom data.
Market Potential
Gauge market potential with insights into population growth, income levels, and more.
Investment Feasibility
Support the financial feasibility of your real estate investments with demographic analysis.
For any additional data requests, please reach out to research@neilsberg.com
Consumer Demographics
Get deep insights into your target customer base by location with tailored reports.
Expansion Planning
Identify potential new markets for business expansion with demographic data.
Site Selection
Choose the best sites for new business locations with location-specific demographic analysis.
Competitor Insights
Inform strategic decisions with demographic comparison to competitor regions.
For any additional data requests, please reach out to research@neilsberg.com
Custom Data Reports
Support your academic research with in-depth demographic data tailored to your objectives.
Trend Analysis
Enrich your research with historical and current demographic trends across thousands of locations.
Location-Specific Insights
Access focused demographic data at city, county, state, and national levels for your studies.
Comparative Studies
Support your research hypotheses with demographic comparison reports across different regions.
For any additional data requests, please reach out to research@neilsberg.com
Community Impact Analysis
Assess the needs and potential impact in specific communities with detailed demographic reports.
Grant Application Support
Bolster your grant applications with precise, location-specific demographic insights.
Program Planning
Design and plan effective community programs with tailored demographic insights.
Impact Measurement
Measure and report the impact of your initiatives with post-implementation demographic analysis.
For any additional data requests, please reach out to research@neilsberg.com

Jefferson County, ID population by age group

Key stats
13,312
Population under 25 years
7,866
Population aged 25-44
6,612
Population aged 45-64
3,593
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022

FIGURE 1

Jefferson County, ID population by age group.

The largest age group is 10 to 14 years with a population of 3,215 (10.24% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.
Neilsberg logo

The largest age group in Jefferson County, ID was for the group of age 10 to 14 years with a population of 3,215 (10.24%), according to the 2018-2022 American Community Survey.

At the same time, the smallest age group in Jefferson County, ID was the 80 to 84 years with a population of 232 (0.74%).

Jefferson County, ID population by age cohort

To better understand the age distribution of Jefferson County, ID'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

Jefferson County, ID population by age cohort

The largest age group was 18 to 64 years with a population of 17,311 (55.16% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.
Neilsberg logo

Jefferson County, ID population by age cohort

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

Age Group Population % of Total Population
Under 18 years 10,479 33.39%
18 to 64 years 17,311 55.16%
65 years and over 3,593 11.45%
Exploring Jefferson 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:

  • Jefferson County 's population under 18 was 33.39%, compared to the 22.11% nationwide.
  • Jefferson County's working population (between 18 and 64) was 55.16%, compared to 61.36% nationwide.
  • Jefferson County's elderly or the senior population (over 65 age) was 11.45% as compared to 16.53% nationwide.

Jefferson County, ID population pyramid

Population pyramid for Jefferson County, ID 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 Jefferson County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Jefferson County, ID, is 44.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Jefferson County, ID, is 18.7.
  • Total dependency ratio for Jefferson County, ID is 63.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Jefferson County, ID is 5.3.

FIGURE 3

Jefferson County, ID population pyramid

Jefferson 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) 2018-2022 5-Year Estimates.
Neilsberg logo

Jefferson County, ID population pyramid

Here's the Jefferson County, ID's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 1,262 1,195 2,457
5 to 9 years 1,435 1,493 2,928
10 to 14 years 1,681 1,534 3,215
15 to 19 years 1,405 1,256 2,661
20 to 24 years 1,179 872 2,051
25 to 29 years 766 923 1,689
30 to 34 years 1,011 893 1,904
35 to 39 years 951 1,156 2,107
40 to 44 years 1,247 919 2,166
45 to 49 years 924 888 1,812
50 to 54 years 749 797 1,546
55 to 59 years 763 681 1,444
60 to 64 years 961 849 1,810
65 to 69 years 818 719 1,537
70 to 74 years 317 471 788
75 to 79 years 375 308 683
80 to 84 years 78 154 232
85 years and over 129 224 353
Exploring Jefferson County's Diversity? Request Customized Data Now!

Things to know

What is the population of Jefferson County, ID under 18?

Jefferson County's population under the age of 18 is 10,479, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 33.39% of the total resident population of Jefferson County, ID.

What is the aging population in Jefferson County, ID?

Jefferson County's population aged 65 years and above was 3,593. As per the U.S. Census Bureau's American Community Survey, this population is 11.45% of the entire population.

References

Datasets

Explore datasets by year of publication.
2024
Jefferson County, ID Age Group Population Dataset: A Complete Breakdown of Jefferson County Age Demographics from 0 to 85 Years and Over, Distributed Across 18 Age Groups // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Jefferson County, ID was for the group of age 10 to 14 years years with a population of 3,215 (10.24%), according to the ACS 2018-2022 5-Year Estimates. At the same time, the smallest age group in Jefferson County, ID was the 80 to 84 years years with a population of 232 (0.74%). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Jefferson County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Jefferson 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 Jefferson County Population by Age. You can refer the same here

Jefferson County, ID Age Cohorts Dataset: Children, Working Adults, and Seniors in Jefferson County - Population and Percentage Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the Jefferson 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 Jefferson 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 17,311 (55.16% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Jefferson County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Jefferson County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Jefferson 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 Jefferson County Population by Age. You can refer the same here

Jefferson County, ID Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis // 2024 Edition
Last updated July 24, 2024
ACS
Free
Neilsberg
CSV, JSON
2018-2022
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Jefferson County, ID population pyramid, which represents the Jefferson County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Jefferson County, ID, is 44.8.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Jefferson County, ID, is 18.7.
  • Total dependency ratio for Jefferson County, ID is 63.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Jefferson County, ID is 5.3.
Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 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 Jefferson County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Jefferson County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Jefferson County for the selected age group is shown in the following column.
  • Total Population: The total population of the Jefferson 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 Jefferson 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 related topics

Jefferson County, ID Demographics Jefferson County, ID Population

Explore more

Population of places that contain Jefferson County
Population of popular cities
Insights for Jefferson County, by topic

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