Lone Tree, CO Population by Age

The median age in Lone Tree, CO is 41.1, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 14.32% were under the age of 15, 20.11% aged 15 to 29, 47.35% aged 30 to 64, 15.92% aged 65 to 84, and 2.29% were 85 years of age and older.
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Updated Feb 22, 2025

Lone Tree, CO population age distributions

A complete breakdown of Lone Tree'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 576 4.07%
5 to 9 years 730 5.16%
10 to 14 years 719 5.09%
15 to 19 years 660 4.67%
20 to 24 years 822 5.81%
25 to 29 years 1,361 9.63%
30 to 34 years 1,065 7.53%
35 to 39 years 876 6.2%
40 to 44 years 1,030 7.29%
45 to 49 years 790 5.59%
50 to 54 years 1,075 7.6%
55 to 59 years 1,031 7.29%
60 to 64 years 827 5.85%
65 to 69 years 766 5.42%
70 to 74 years 677 4.79%
75 to 79 years 515 3.64%
80 to 84 years 292 2.07%
85 years and over 324 2.29%
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Lone Tree, CO population by age group

Key stats
3,507
Population under 25 years
4,332
Population aged 25-44
3,723
Population aged 45-64
2,574
Population aged 65+

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

FIGURE 1

Lone Tree, CO population by age group.

The largest age group is 25 to 29 years with a population of 1,361 (9.63% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

The largest age group in Lone Tree, CO was for the group of age 25 to 29 years with a population of 1,361 (9.63%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Lone Tree, CO was the 80 to 84 years with a population of 292 (2.07%).

Lone Tree, CO population by age cohort

To better understand the age distribution of Lone Tree, CO'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

Lone Tree, CO population by age cohort

The largest age group was 18 to 64 years with a population of 9,136 (64.63% of the total population).

Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.

Lone Tree, CO population by age cohort

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

Age Group Population % of Total Population
Under 18 years 2,426 17.16%
18 to 64 years 9,136 64.63%
65 years and over 2,574 18.21%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Lone Tree 's population under 18 was 17.16%, compared to the 22.16% nationwide.
  • Lone Tree's working population (between 18 and 64) was 64.63%, compared to 61% nationwide.
  • Lone Tree's elderly or the senior population (over 65 age) was 18.21% as compared to 16.84% nationwide.

Lone Tree, CO population pyramid

Population pyramid for Lone Tree, CO 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 Lone Tree's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Lone Tree, CO, is 21.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Lone Tree, CO, is 27.0.
  • Total dependency ratio for Lone Tree, CO is 48.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Lone Tree, CO is 3.7.

FIGURE 3

Lone Tree, CO population pyramid

Lone Tree 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.

Lone Tree, CO population pyramid

Here's the Lone Tree, CO's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 388 188 576
5 to 9 years 413 317 730
10 to 14 years 362 357 719
15 to 19 years 311 349 660
20 to 24 years 227 595 822
25 to 29 years 726 635 1,361
30 to 34 years 608 457 1,065
35 to 39 years 453 423 876
40 to 44 years 543 487 1,030
45 to 49 years 351 439 790
50 to 54 years 496 579 1,075
55 to 59 years 653 378 1,031
60 to 64 years 410 417 827
65 to 69 years 341 425 766
70 to 74 years 411 266 677
75 to 79 years 205 310 515
80 to 84 years 83 209 292
85 years and over 137 187 324
Exploring Lone Tree's Diversity? Request Customized Data Now!

Things to know

What is the population of Lone Tree, CO under 18?

Lone Tree's population under the age of 18 is 2,426, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 17.16% of the total resident population of Lone Tree, CO.

What is the aging population in Lone Tree, CO?

Lone Tree's population aged 65 years and above was 2,574. As per the U.S. Census Bureau's American Community Survey, this population is 18.21% of the entire population.

References

Datasets

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

Key observations

The largest age group in Lone Tree, CO was for the group of age 25 to 29 years years with a population of 1,361 (9.63%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Lone Tree, CO was the 80 to 84 years years with a population of 292 (2.07%). 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 Lone Tree is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Lone Tree 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 Lone Tree Population by Age. You can refer the same here

Lone Tree, CO Age Cohorts Dataset: Children, Working Adults, and Seniors in Lone Tree - 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 Lone Tree 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 Lone Tree. 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 9,136 (64.63% 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 Lone Tree population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Lone Tree is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Lone Tree 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 Lone Tree Population by Age. You can refer the same here

Lone Tree, CO 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 Lone Tree, CO population pyramid, which represents the Lone Tree 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 Lone Tree, CO, is 21.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Lone Tree, CO, is 27.0.
  • Total dependency ratio for Lone Tree, CO is 48.2.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Lone Tree, CO is 3.7.
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 Lone Tree population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Lone Tree for the selected age group is shown in the following column.
  • Population (Female): The female population in the Lone Tree for the selected age group is shown in the following column.
  • Total Population: The total population of the Lone Tree 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 Lone Tree 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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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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