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Baltimore County, MD Population by Age

The median age in Baltimore County, MD is 39.4, as per 2021 ACS 5-Year Estimates. Of the total population, 18.12% were under the age of 15, 19.05% aged 15 to 29, 45.69% aged 30 to 64, 14.78% aged 65 to 84, and 2.37% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Baltimore County, MD population age distribution

A complete breakdown of Baltimore 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 49,589 5.83%
5 to 9 years 51,408 6.04%
10 to 14 years 53,163 6.25%
15 to 19 years 55,026 6.47%
20 to 24 years 51,269 6.03%
25 to 29 years 55,725 6.55%
30 to 34 years 58,300 6.85%
35 to 39 years 56,476 6.64%
40 to 44 years 50,001 5.88%
45 to 49 years 51,618 6.07%
50 to 54 years 55,356 6.51%
55 to 59 years 57,181 6.72%
60 to 64 years 59,735 7.02%
65 to 69 years 47,149 5.54%
70 to 74 years 37,114 4.36%
75 to 79 years 24,901 2.93%
80 to 84 years 16,529 1.94%
85 years and over 20,162 2.37%
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TABLE OF CONTENTS

Baltimore County, MD population by age group

Key stats
260,455
Population under 25 years
220,502
Population aged 25-44
223,890
Population aged 45-64
145,855
Population aged 65+

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

The graph shows Baltimore 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
Baltimore County, MD population by age group. The largest age group was 60-64 years with a poulation of 59,735 (7.02% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Baltimore County, MD was for the group of age 60-64 years with a population of 59,735 (7.02%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Baltimore County, MD was the 80-84 years with a population of 16,529 (1.94%).

Baltimore County, MD population by age cohort

To better understand the age distribution of Baltimore County, MD'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 Baltimore 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.
Baltimore County, MD 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 518,879 (60.99% 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 185,968 21.86%
18 to 64 years 518,879 60.99%
85 years and over 145,855 17.15%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Baltimore County's population under 18 was 21.86%, compared to the 22.51% nationwide.
  • Baltimore County's working population (between 18 and 64) was 60.99%, compared to 61.45% nationwide.
  • Baltimore County's elderly or the senior population (over 65 age) was 17.15% as compared to 16.04% nationwide.

Baltimore County, MD population pyramid

Population pyramid for Baltimore County, MD 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 Baltimore County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Baltimore County, MD, is 28.0.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Baltimore County, MD, is 26.5.
  • Total dependency ratio for Baltimore County, MD is 54.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Baltimore County, MD is 3.8.
The graph shows Baltimore 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.
Baltimore County, MD population pyramid i.e. Baltimore County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Baltimore County, MD's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 25,145 24,444 49,589
5 to 9 years 25,613 25,795 51,408
10 to 14 years 27,634 25,529 53,163
15 to 19 years 27,670 27,356 55,026
20 to 24 years 25,240 26,029 51,269
25 to 29 years 26,945 28,780 55,725
30 to 34 years 27,961 30,339 58,300
35 to 39 years 26,813 29,663 56,476
40 to 44 years 23,773 26,228 50,001
45 to 49 years 24,482 27,136 51,618
50 to 54 years 26,416 28,940 55,356
55 to 59 years 26,438 30,743 57,181
60 to 64 years 28,813 30,922 59,735
65 to 69 years 20,768 26,381 47,149
70 to 74 years 17,424 19,690 37,114
75 to 79 years 10,286 14,615 24,901
80 to 84 years 6,967 9,562 16,529
85 years and over 6,519 13,643 20,162
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Things to know

What is the population of Baltimore County, MD under 18?

Baltimore County's population under the age of 18 is 185,968, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.86% of the total resident population of Baltimore County, MD.

What is the aging population in Baltimore County, MD?

Baltimore County's population aged 65 years and above was 145,855. As per the U.S. Census Bureau's American Community Survey, this population is 17.15% of the entire population.

References

Datasets

Baltimore County, MD Age Group Population Dataset: A complete breakdown of Baltimore County age demographics from 0 to 85 years, distributed across 18 age groups
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

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

Key observations

The largest age group in Baltimore County, MD was for the group of age 60-64 years with a population of 59,735 (7.02%), according to the 2021 American Community Survey. At the same time, the smallest age group in Baltimore County, MD was the 80-84 years with a population of 16,529 (1.94%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Baltimore 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 Baltimore County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Baltimore 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 Baltimore County Population by Age. You can refer the same here

Baltimore County, MD Age Cohorts Dataset: Children, Working Adults, and Seniors in Baltimore County - Population and Percentage Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Baltimore 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 Baltimore 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.

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

Baltimore County, MD Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Baltimore County, MD population pyramid, which represents the Baltimore 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 Baltimore County, MD, is 28.0.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Baltimore County, MD, is 26.5.
  • Total dependency ratio for Baltimore County, MD is 54.5.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Baltimore County, MD is 3.8.

Baltimore 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 Baltimore County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Baltimore County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Baltimore County for the selected age group is shown in the following column.
  • Total Population: The total population of the Baltimore 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 Baltimore County Population by Age. You can refer the same here

Explore related topics

Baltimore County, MD Demographics Baltimore County, MD Population

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Neilsberg Research
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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Collection 5 Resources