Cobb County, GA Population by Age

The median age in Cobb County, GA is 37.1, as per 2021 ACS 5-Year Estimates. Of the total population, 19.19% were under the age of 15, 20.39% aged 15 to 29, 47.94% aged 30 to 64, 11.29% aged 65 to 84, and 1.19% were 85 years of age and older.
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Updated Sep 17, 2023

Cobb County, GA population age distribution

A complete breakdown of Cobb 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 45,289 5.94%
5 to 9 years 49,895 6.54%
10 to 14 years 51,146 6.71%
15 to 19 years 51,915 6.81%
20 to 24 years 48,168 6.32%
25 to 29 years 55,396 7.27%
30 to 34 years 55,065 7.22%
35 to 39 years 56,404 7.4%
40 to 44 years 52,130 6.84%
45 to 49 years 55,032 7.22%
50 to 54 years 52,935 6.94%
55 to 59 years 51,008 6.69%
60 to 64 years 42,992 5.64%
65 to 69 years 34,288 4.5%
70 to 74 years 26,976 3.54%
75 to 79 years 15,568 2.04%
80 to 84 years 9,228 1.21%
85 years and over 9,065 1.19%
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Cobb County, GA population by age group

Key stats
246,413
Population under 25 years
218,995
Population aged 25-44
201,967
Population aged 45-64
95,125
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The graph shows Cobb County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Cobb County, GA population by age group. The largest age group was 35-39 years with a poulation of 56,404 (7.40% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Cobb County, GA was for the group of age 35-39 years with a population of 56,404 (7.40%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Cobb County, GA was the 85+ years with a population of 9,065 (1.19%).

Cobb County, GA population by age cohort

To better understand the age distribution of Cobb County, GA'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
The pie chart shows Cobb County's population divided into segments, with each segment representing an age cohort. The area of each segment is in the same proportion of a circle as the population of the cohort is of the total population.
Cobb County, GA population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). The largest age group was 18 - 64 years with a poulation of 488,795 (64.10% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Age Group Population % of Total Population
Under 18 years 178,580 23.42%
18 to 64 years 488,795 64.1%
85 years and over 95,125 12.48%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Cobb County's population under 18 was 23.42%, compared to the 22.51% nationwide.
  • Cobb County's working population (between 18 and 64) was 64.10%, compared to 61.45% nationwide.
  • Cobb County's elderly or the senior population (over 65 age) was 12.48% as compared to 16.04% nationwide.

Cobb County, GA population pyramid

Population pyramid for Cobb County, GA 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 Cobb County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Cobb County, GA, is 28.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Cobb County, GA, is 18.3.
  • Total dependency ratio for Cobb County, GA is 46.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Cobb County, GA is 5.5.
The graph shows Cobb County's population across different age group and gender, with population on x-axis and population y-axis. The male population is plotted on the left in blue color whereas the female population is plotted on the right in pink color.
Cobb County, GA population pyramid i.e. Cobb County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Cobb County, GA's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 22,943 22,346 45,289
5 to 9 years 26,122 23,773 49,895
10 to 14 years 25,048 26,098 51,146
15 to 19 years 26,316 25,599 51,915
20 to 24 years 24,219 23,949 48,168
25 to 29 years 27,542 27,854 55,396
30 to 34 years 27,161 27,904 55,065
35 to 39 years 27,756 28,648 56,404
40 to 44 years 24,745 27,385 52,130
45 to 49 years 26,674 28,358 55,032
50 to 54 years 25,734 27,201 52,935
55 to 59 years 24,401 26,607 51,008
60 to 64 years 20,699 22,293 42,992
65 to 69 years 15,789 18,499 34,288
70 to 74 years 12,160 14,816 26,976
75 to 79 years 7,349 8,219 15,568
80 to 84 years 3,256 5,972 9,228
85 years and over 3,429 5,636 9,065
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Things to know

What is the population of Cobb County, GA under 18?

Cobb County's population under the age of 18 is 178,580, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.42% of the total resident population of Cobb County, GA.

What is the aging population in Cobb County, GA?

Cobb County's population aged 65 years and above was 95,125. As per the U.S. Census Bureau's American Community Survey, this population is 12.48% of the entire population.

References

Datasets

Explore datasets by year of publication.
2023
Cobb County, GA Age Group Population Dataset: A complete breakdown of Cobb County age demographics from 0 to 85 years, distributed across 18 age groups
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Cobb County, GA was for the group of age 35-39 years with a population of 56,404 (7.40%), according to the 2021 American Community Survey. At the same time, the smallest age group in Cobb County, GA was the 85+ years with a population of 9,065 (1.19%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Cobb County population by age group

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Cobb County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Cobb 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 Cobb County Population by Age. You can refer the same here

Cobb County, GA Age Cohorts Dataset: Children, Working Adults, and Seniors in Cobb County - Population and Percentage Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Cobb 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 Cobb 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 $b3_v1 with a poulation of $b3_v2 ($b3_v3 of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Cobb County population by age cohort

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Cobb County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Cobb County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Cobb 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 Cobb County Population by Age. You can refer the same here

Cobb County, GA Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
Last updated September 16, 2023
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Cobb County, GA population pyramid, which represents the Cobb County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey 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 Cobb County, GA, is 28.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Cobb County, GA, is 18.3.
  • Total dependency ratio for Cobb County, GA is 46.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Cobb County, GA is 5.5.

Cobb County population pyramid

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Cobb County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Cobb County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Cobb County for the selected age group is shown in the following column.
  • Total Population: The total population of the Cobb 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 Cobb 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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Population of places that contain Cobb County

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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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