San Jose, CA Population by Age

The median age in San Jose, CA is 38.1, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 17.09% were under the age of 15, 20.31% aged 15 to 29, 48.48% aged 30 to 64, 12.35% aged 65 to 84, and 1.77% were 85 years of age and older.
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Updated Feb 22, 2025

San Jose, CA population age distributions

A complete breakdown of San Jose'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 51,195 5.17%
5 to 9 years 55,773 5.63%
10 to 14 years 62,312 6.29%
15 to 19 years 63,362 6.4%
20 to 24 years 65,192 6.58%
25 to 29 years 72,534 7.33%
30 to 34 years 79,083 7.99%
35 to 39 years 74,756 7.55%
40 to 44 years 70,180 7.09%
45 to 49 years 68,995 6.97%
50 to 54 years 67,472 6.81%
55 to 59 years 64,248 6.49%
60 to 64 years 55,196 5.58%
65 to 69 years 47,220 4.77%
70 to 74 years 34,426 3.48%
75 to 79 years 24,062 2.43%
80 to 84 years 16,543 1.67%
85 years and over 17,505 1.77%
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San Jose, CA population by age group

Key stats
297,834
Population under 25 years
296,553
Population aged 25-44
255,911
Population aged 45-64
139,756
Population aged 65+

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

FIGURE 1

San Jose, CA population by age group.

The largest age group is 30 to 34 years with a population of 79,083 (7.99% of the total population).

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

The largest age group in San Jose, CA was for the group of age 30 to 34 years with a population of 79,083 (7.99%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in San Jose, CA was the 80 to 84 years with a population of 16,543 (1.67%).

San Jose, CA population by age cohort

To better understand the age distribution of San Jose, CA'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

San Jose, CA population by age cohort

The largest age group was 18 to 64 years with a population of 642,809 (64.93% of the total population).

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

San Jose, CA population by age cohort

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

Age Group Population % of Total Population
Under 18 years 207,489 20.96%
18 to 64 years 642,809 64.93%
65 years and over 139,756 14.12%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • San Jose 's population under 18 was 20.96%, compared to the 22.16% nationwide.
  • San Jose's working population (between 18 and 64) was 64.93%, compared to 61% nationwide.
  • San Jose's elderly or the senior population (over 65 age) was 14.12% as compared to 16.84% nationwide.

San Jose, CA population pyramid

Population pyramid for San Jose, CA 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 Jose's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for San Jose, CA, is 24.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for San Jose, CA, is 20.5.
  • Total dependency ratio for San Jose, CA is 45.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for San Jose, CA is 4.9.

FIGURE 3

San Jose, CA population pyramid

San Jose 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.

San Jose, CA population pyramid

Here's the San Jose, CA's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 26,064 25,131 51,195
5 to 9 years 28,258 27,515 55,773
10 to 14 years 32,054 30,258 62,312
15 to 19 years 33,040 30,322 63,362
20 to 24 years 33,385 31,807 65,192
25 to 29 years 38,924 33,610 72,534
30 to 34 years 43,424 35,659 79,083
35 to 39 years 39,546 35,210 74,756
40 to 44 years 35,660 34,520 70,180
45 to 49 years 35,291 33,704 68,995
50 to 54 years 34,238 33,234 67,472
55 to 59 years 32,895 31,353 64,248
60 to 64 years 28,592 26,604 55,196
65 to 69 years 22,497 24,723 47,220
70 to 74 years 16,011 18,415 34,426
75 to 79 years 10,774 13,288 24,062
80 to 84 years 7,015 9,528 16,543
85 years and over 6,511 10,994 17,505
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Things to know

What is the population of San Jose, CA under 18?

San Jose's population under the age of 18 is 207,489, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 20.96% of the total resident population of San Jose, CA.

What is the aging population in San Jose, CA?

San Jose's population aged 65 years and above was 139,756. As per the U.S. Census Bureau's American Community Survey, this population is 14.12% of the entire population.

References

Datasets

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

Key observations

The largest age group in San Jose, CA was for the group of age 30 to 34 years years with a population of 79,083 (7.99%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in San Jose, CA was the 80 to 84 years years with a population of 16,543 (1.67%). 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 San Jose is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of San Jose 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 Jose Population by Age. You can refer the same here

San Jose, CA Age Cohorts Dataset: Children, Working Adults, and Seniors in San Jose - 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 San Jose 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 Jose. 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 642,809 (64.93% 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 San Jose population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in San Jose is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the San Jose 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 Jose Population by Age. You can refer the same here

San Jose, CA 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 San Jose, CA population pyramid, which represents the San Jose 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 San Jose, CA, is 24.9.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for San Jose, CA, is 20.5.
  • Total dependency ratio for San Jose, CA is 45.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for San Jose, CA is 4.9.
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 San Jose population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the San Jose for the selected age group is shown in the following column.
  • Population (Female): The female population in the San Jose for the selected age group is shown in the following column.
  • Total Population: The total population of the San Jose 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 Jose 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
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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