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Boise City, ID Population by Age

The median age in Boise City, ID is 38.2, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 14.84% were under the age of 15, 22.77% aged 15 to 29, 47.08% aged 30 to 64, 13.75% aged 65 to 84, and 1.57% were 85 years of age and older.
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By Neilsberg Research
Updated Feb 22, 2025

Boise City, ID population age distributions

A complete breakdown of Boise City'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 10,363 4.4%
5 to 9 years 11,571 4.91%
10 to 14 years 13,031 5.53%
15 to 19 years 17,412 7.39%
20 to 24 years 17,531 7.44%
25 to 29 years 18,715 7.94%
30 to 34 years 18,421 7.82%
35 to 39 years 16,595 7.04%
40 to 44 years 16,761 7.11%
45 to 49 years 15,168 6.44%
50 to 54 years 14,506 6.15%
55 to 59 years 15,120 6.41%
60 to 64 years 14,397 6.11%
65 to 69 years 11,837 5.02%
70 to 74 years 9,788 4.15%
75 to 79 years 6,873 2.92%
80 to 84 years 3,911 1.66%
85 years and over 3,701 1.57%
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Boise City, ID population by age group

Key stats
69,908
Population under 25 years
70,492
Population aged 25-44
59,191
Population aged 45-64
36,110
Population aged 65+

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

FIGURE 1

Boise City, ID population by age group.

The largest age group is 25 to 29 years with a population of 18,715 (7.94% 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 Boise City, ID was for the group of age 25 to 29 years with a population of 18,715 (7.94%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Boise City, ID was the 85 years and over with a population of 3,701 (1.57%).

Boise City, ID population by age cohort

To better understand the age distribution of Boise City, 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

Boise City, ID population by age cohort

The largest age group was 18 to 64 years with a population of 155,742 (66.08% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.
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Boise City, ID population by age cohort

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

Age Group Population % of Total Population
Under 18 years 43,849 18.6%
18 to 64 years 155,742 66.08%
65 years and over 36,110 15.32%
Exploring Boise City's Diversity? Request Customized Data Now!

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

  • Boise City 's population under 18 was 18.60%, compared to the 22.16% nationwide.
  • Boise City's working population (between 18 and 64) was 66.08%, compared to 61% nationwide.
  • Boise City's elderly or the senior population (over 65 age) was 15.32% as compared to 16.84% nationwide.

Boise City, ID population pyramid

Population pyramid for Boise City, 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 Boise City's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Boise City, ID, is 21.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Boise City, ID, is 21.9.
  • Total dependency ratio for Boise City, ID is 43.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Boise City, ID is 4.6.

FIGURE 3

Boise City, ID population pyramid

Boise City 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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Boise City, ID population pyramid

Here's the Boise City, ID's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 5,370 4,993 10,363
5 to 9 years 6,022 5,549 11,571
10 to 14 years 6,927 6,104 13,031
15 to 19 years 8,760 8,652 17,412
20 to 24 years 9,066 8,465 17,531
25 to 29 years 9,981 8,734 18,715
30 to 34 years 9,021 9,400 18,421
35 to 39 years 8,702 7,893 16,595
40 to 44 years 8,173 8,588 16,761
45 to 49 years 7,884 7,284 15,168
50 to 54 years 7,708 6,798 14,506
55 to 59 years 7,397 7,723 15,120
60 to 64 years 6,851 7,546 14,397
65 to 69 years 5,472 6,365 11,837
70 to 74 years 4,843 4,945 9,788
75 to 79 years 3,128 3,745 6,873
80 to 84 years 1,710 2,201 3,911
85 years and over 1,279 2,422 3,701
Exploring Boise City's Diversity? Request Customized Data Now!

Things to know

What is the population of Boise City, ID under 18?

Boise City's population under the age of 18 is 43,849, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 18.60% of the total resident population of Boise City, ID.

What is the aging population in Boise City, ID?

Boise City's population aged 65 years and above was 36,110. As per the U.S. Census Bureau's American Community Survey, this population is 15.32% of the entire population.

References

Datasets

Explore datasets by year of publication.
2025
Boise City, ID Age Group Population Dataset: A Complete Breakdown of Boise City 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 Boise City 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 Boise City. The dataset can be utilized to understand the population distribution of Boise City by age. For example, using this dataset, we can identify the largest age group in Boise City.

Key observations

The largest age group in Boise City, ID was for the group of age 25 to 29 years years with a population of 18,715 (7.94%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Boise City, ID was the 85 years and over years with a population of 3,701 (1.57%). 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 Boise City is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Boise City 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 Boise City Population by Age. You can refer the same here

Boise City, ID Age Cohorts Dataset: Children, Working Adults, and Seniors in Boise City - 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 Boise City 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 Boise City. 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 155,742 (66.08% 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 Boise City population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Boise City is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Boise City 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 Boise City Population by Age. You can refer the same here

Boise City, ID 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 Boise City, ID population pyramid, which represents the Boise City 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 Boise City, ID, is 21.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Boise City, ID, is 21.9.
  • Total dependency ratio for Boise City, ID is 43.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Boise City, ID is 4.6.
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 Boise City population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Boise City for the selected age group is shown in the following column.
  • Population (Female): The female population in the Boise City for the selected age group is shown in the following column.
  • Total Population: The total population of the Boise City 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 Boise City 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

Boise City, ID Demographics Boise City, ID Population

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About the author

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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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