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Teton County, MT Population by Age

The median age in Teton County, MT is 43.0, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 20.78% were under the age of 15, 15.74% aged 15 to 29, 40.31% aged 30 to 64, 19.49% aged 65 to 84, and 3.69% were 85 years of age and older.
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By Neilsberg Research
Updated Feb 22, 2025

Teton County, MT population age distributions

A complete breakdown of Teton 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 410 6.52%
5 to 9 years 426 6.77%
10 to 14 years 471 7.49%
15 to 19 years 392 6.23%
20 to 24 years 291 4.63%
25 to 29 years 307 4.88%
30 to 34 years 325 5.17%
35 to 39 years 347 5.52%
40 to 44 years 306 4.86%
45 to 49 years 316 5.02%
50 to 54 years 341 5.42%
55 to 59 years 433 6.88%
60 to 64 years 468 7.44%
65 to 69 years 391 6.22%
70 to 74 years 349 5.55%
75 to 79 years 326 5.18%
80 to 84 years 160 2.54%
85 years and over 232 3.69%
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Teton County, MT population by age group

Key stats
1,990
Population under 25 years
1,285
Population aged 25-44
1,558
Population aged 45-64
1,458
Population aged 65+

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

FIGURE 1

Teton County, MT population by age group.

The largest age group is 10 to 14 years with a population of 471 (7.49% 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 Teton County, MT was for the group of age 10 to 14 years with a population of 471 (7.49%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Teton County, MT was the 80 to 84 years with a population of 160 (2.54%).

Teton County, MT population by age cohort

To better understand the age distribution of Teton County, MT'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

Teton County, MT population by age cohort

The largest age group was 18 to 64 years with a population of 3,259 (51.80% of the total population).

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

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

Age Group Population % of Total Population
Under 18 years 1,574 25.02%
18 to 64 years 3,259 51.8%
65 years and over 1,458 23.18%
Exploring Teton 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:

  • Teton County 's population under 18 was 25.02%, compared to the 22.16% nationwide.
  • Teton County's working population (between 18 and 64) was 51.80%, compared to 61% nationwide.
  • Teton County's elderly or the senior population (over 65 age) was 23.18% as compared to 16.84% nationwide.

Teton County, MT population pyramid

Population pyramid for Teton County, MT 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 Teton County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Teton County, MT, is 37.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Teton County, MT, is 41.3.
  • Total dependency ratio for Teton County, MT is 78.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Teton County, MT is 2.4.

FIGURE 3

Teton County, MT population pyramid

Teton 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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Teton County, MT population pyramid

Here's the Teton County, MT's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 208 202 410
5 to 9 years 159 267 426
10 to 14 years 261 210 471
15 to 19 years 216 176 392
20 to 24 years 152 139 291
25 to 29 years 151 156 307
30 to 34 years 166 159 325
35 to 39 years 151 196 347
40 to 44 years 167 139 306
45 to 49 years 153 163 316
50 to 54 years 176 165 341
55 to 59 years 223 210 433
60 to 64 years 210 258 468
65 to 69 years 158 233 391
70 to 74 years 218 131 349
75 to 79 years 169 157 326
80 to 84 years 60 100 160
85 years and over 93 139 232
Exploring Teton County's Diversity? Request Customized Data Now!

Things to know

What is the population of Teton County, MT under 18?

Teton County's population under the age of 18 is 1,574, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 25.02% of the total resident population of Teton County, MT.

What is the aging population in Teton County, MT?

Teton County's population aged 65 years and above was 1,458. As per the U.S. Census Bureau's American Community Survey, this population is 23.18% of the entire population.

References

Datasets

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

Key observations

The largest age group in Teton County, MT was for the group of age 10 to 14 years years with a population of 471 (7.49%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Teton County, MT was the 80 to 84 years years with a population of 160 (2.54%). 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 Teton County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Teton 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 Teton County Population by Age. You can refer the same here

Teton County, MT Age Cohorts Dataset: Children, Working Adults, and Seniors in Teton 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 Teton 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 Teton 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 3,259 (51.80% 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 Teton County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Teton County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Teton 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 Teton County Population by Age. You can refer the same here

Teton County, MT 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 Teton County, MT population pyramid, which represents the Teton 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 Teton County, MT, is 37.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Teton County, MT, is 41.3.
  • Total dependency ratio for Teton County, MT is 78.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Teton County, MT is 2.4.
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 Teton County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Teton County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Teton County for the selected age group is shown in the following column.
  • Total Population: The total population of the Teton 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 Teton 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