San Antonio, TX Population by Age

The median age in San Antonio, TX is 33.9, as per 2021 ACS 5-Year Estimates. Of the total population, 20.37% were under the age of 15, 23.28% aged 15 to 29, 43.83% aged 30 to 64, 11.01% aged 65 to 84, and 1.52% were 85 years of age and older.
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Updated Sep 17, 2023

San Antonio, TX population age distribution

A complete breakdown of San Antonio'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 95,570 6.66%
5 to 9 years 97,479 6.8%
10 to 14 years 99,103 6.91%
15 to 19 years 103,448 7.21%
20 to 24 years 110,175 7.68%
25 to 29 years 120,337 8.39%
30 to 34 years 112,663 7.85%
35 to 39 years 101,783 7.1%
40 to 44 years 91,778 6.4%
45 to 49 years 87,006 6.07%
50 to 54 years 82,244 5.73%
55 to 59 years 82,770 5.77%
60 to 64 years 70,538 4.92%
65 to 69 years 60,623 4.23%
70 to 74 years 47,447 3.31%
75 to 79 years 30,686 2.14%
80 to 84 years 19,139 1.33%
85 years and over 21,751 1.52%
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San Antonio, TX population by age group

Key stats
505,775
Population under 25 years
426,561
Population aged 25-44
322,558
Population aged 45-64
179,646
Population aged 65+

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

The graph shows San Antonio'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
San Antonio, TX population by age group. The largest age group was 25-29 years with a poulation of 120,337 (8.39% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in San Antonio, TX was for the group of age 25-29 years with a population of 120,337 (8.39%), according to the 2021 American Community Survey.

At the same time, the smallest age group in San Antonio, TX was the 80-84 years with a population of 19,139 (1.33%).

San Antonio, TX population by age cohort

To better understand the age distribution of San Antonio, TX'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 San Antonio'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.
San Antonio, TX 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 902,035 (62.88% 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 352,859 24.6%
18 to 64 years 902,035 62.88%
85 years and over 179,646 12.52%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • San Antonio's population under 18 was 24.60%, compared to the 22.51% nationwide.
  • San Antonio's working population (between 18 and 64) was 62.88%, compared to 61.45% nationwide.
  • San Antonio's elderly or the senior population (over 65 age) was 12.52% as compared to 16.04% nationwide.

San Antonio, TX population pyramid

Population pyramid for San Antonio, TX 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 San Antonio's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for San Antonio, TX, is 30.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for San Antonio, TX, is 18.7.
  • Total dependency ratio for San Antonio, TX is 49.0.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for San Antonio, TX is 5.4.
The graph shows San Antonio'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.
San Antonio, TX population pyramid i.e. San Antonio population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the San Antonio, TX's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 48,152 47,418 95,570
5 to 9 years 51,210 46,269 97,479
10 to 14 years 49,504 49,599 99,103
15 to 19 years 53,320 50,128 103,448
20 to 24 years 55,606 54,569 110,175
25 to 29 years 61,700 58,637 120,337
30 to 34 years 58,020 54,643 112,663
35 to 39 years 51,264 50,519 101,783
40 to 44 years 46,287 45,491 91,778
45 to 49 years 43,261 43,745 87,006
50 to 54 years 40,392 41,852 82,244
55 to 59 years 40,987 41,783 82,770
60 to 64 years 32,897 37,641 70,538
65 to 69 years 27,879 32,744 60,623
70 to 74 years 20,836 26,611 47,447
75 to 79 years 12,372 18,314 30,686
80 to 84 years 7,638 11,501 19,139
85 years and over 7,966 13,785 21,751
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Things to know

What is the population of San Antonio, TX under 18?

San Antonio's population under the age of 18 is 352,859, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 24.60% of the total resident population of San Antonio, TX.

What is the aging population in San Antonio, TX?

San Antonio's population aged 65 years and above was 179,646. As per the U.S. Census Bureau's American Community Survey, this population is 12.52% of the entire population.

References

Datasets

Explore datasets by year of publication.
2023
San Antonio, TX Age Group Population Dataset: A complete breakdown of San Antonio 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 San Antonio 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 San Antonio. The dataset can be utilized to understand the population distribution of San Antonio by age. For example, using this dataset, we can identify the largest age group in San Antonio.

Key observations

The largest age group in San Antonio, TX was for the group of age 25-29 years with a population of 120,337 (8.39%), according to the 2021 American Community Survey. At the same time, the smallest age group in San Antonio, TX was the 80-84 years with a population of 19,139 (1.33%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

San Antonio, TX Age Cohorts Dataset: Children, Working Adults, and Seniors in San Antonio - 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 San Antonio 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 San Antonio. 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.

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

San Antonio, TX 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 San Antonio, TX population pyramid, which represents the San Antonio 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 San Antonio, TX, is 30.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for San Antonio, TX, is 18.7.
  • Total dependency ratio for San Antonio, TX is 49.0.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for San Antonio, TX is 5.4.

San Antonio 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 San Antonio population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the San Antonio for the selected age group is shown in the following column.
  • Population (Female): The female population in the San Antonio for the selected age group is shown in the following column.
  • Total Population: The total population of the San Antonio 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 San Antonio 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.

About the author

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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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