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Sidney, Maine Population by Age

The median age in Sidney, Maine is 39.7, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 20.23% were under the age of 15, 16.81% aged 15 to 29, 46.31% aged 30 to 64, 16.30% aged 65 to 84, and 0.38% were 85 years of age and older.
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By Neilsberg Research
Updated Feb 22, 2025

Sidney, Maine population age distributions

A complete breakdown of Sidney town'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 327 6.92%
5 to 9 years 356 7.53%
10 to 14 years 273 5.78%
15 to 19 years 221 4.68%
20 to 24 years 289 6.12%
25 to 29 years 284 6.01%
30 to 34 years 257 5.44%
35 to 39 years 369 7.81%
40 to 44 years 233 4.93%
45 to 49 years 309 6.54%
50 to 54 years 239 5.06%
55 to 59 years 490 10.37%
60 to 64 years 291 6.16%
65 to 69 years 333 7.05%
70 to 74 years 242 5.12%
75 to 79 years 135 2.86%
80 to 84 years 60 1.27%
85 years and over 18 0.38%
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Sidney, Maine population by age group

Key stats
1,466
Population under 25 years
1,143
Population aged 25-44
1,329
Population aged 45-64
788
Population aged 65+

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

FIGURE 1

Sidney, Maine population by age group.

The largest age group is 55 to 59 years with a population of 490 (10.37% 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 Sidney, Maine was for the group of age 55 to 59 years with a population of 490 (10.37%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Sidney, Maine was the 85 years and over with a population of 18 (0.38%).

Sidney, Maine population by age cohort

To better understand the age distribution of Sidney, Maine'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

Sidney, Maine population by age cohort

The largest age group was 18 to 64 years with a population of 2,874 (60.81% of the total population).

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

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

Age Group Population % of Total Population
Under 18 years 1,064 22.51%
18 to 64 years 2,874 60.81%
65 years and over 788 16.67%
Exploring Sidney town's Diversity? Request Customized Data Now!

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

  • Sidney town 's population under 18 was 22.51%, compared to the 22.16% nationwide.
  • Sidney town's working population (between 18 and 64) was 60.81%, compared to 61% nationwide.
  • Sidney town's elderly or the senior population (over 65 age) was 16.67% as compared to 16.84% nationwide.

Sidney, Maine population pyramid

Population pyramid for Sidney, Maine 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 Sidney town's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Sidney, Maine, is 32.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Sidney, Maine, is 26.4.
  • Total dependency ratio for Sidney, Maine is 58.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Sidney, Maine is 3.8.

FIGURE 3

Sidney, Maine population pyramid

Sidney town 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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Sidney, Maine population pyramid

Here's the Sidney, Maine's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 199 128 327
5 to 9 years 216 140 356
10 to 14 years 126 147 273
15 to 19 years 68 153 221
20 to 24 years 92 197 289
25 to 29 years 131 153 284
30 to 34 years 144 113 257
35 to 39 years 190 179 369
40 to 44 years 87 146 233
45 to 49 years 149 160 309
50 to 54 years 66 173 239
55 to 59 years 180 310 490
60 to 64 years 198 93 291
65 to 69 years 179 154 333
70 to 74 years 129 113 242
75 to 79 years 77 58 135
80 to 84 years 0 60 60
85 years and over 2 16 18
Exploring Sidney town's Diversity? Request Customized Data Now!

Things to know

What is the population of Sidney, Maine under 18?

Sidney town's population under the age of 18 is 1,064, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.51% of the total resident population of Sidney, Maine.

What is the aging population in Sidney, Maine?

Sidney town's population aged 65 years and above was 788. As per the U.S. Census Bureau's American Community Survey, this population is 16.67% of the entire population.

References

Datasets

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

Key observations

The largest age group in Sidney, Maine was for the group of age 55 to 59 years years with a population of 490 (10.37%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Sidney, Maine was the 85 years and over years with a population of 18 (0.38%). 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 Sidney town is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Sidney town 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 Sidney town Population by Age. You can refer the same here

Sidney, Maine Age Cohorts Dataset: Children, Working Adults, and Seniors in Sidney town - 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 Sidney town 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 Sidney town. 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 2,874 (60.81% 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 Sidney town population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Sidney town is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Sidney town 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 Sidney town Population by Age. You can refer the same here

Sidney, Maine 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 Sidney, Maine population pyramid, which represents the Sidney town 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 Sidney, Maine, is 32.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Sidney, Maine, is 26.4.
  • Total dependency ratio for Sidney, Maine is 58.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Sidney, Maine is 3.8.
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 Sidney town population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Sidney town for the selected age group is shown in the following column.
  • Population (Female): The female population in the Sidney town for the selected age group is shown in the following column.
  • Total Population: The total population of the Sidney town 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 Sidney town 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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Sidney, Maine Demographics Sidney, Maine Population

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Neilsberg Research
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Collection 5 Resources