Monte Sereno, CA Population by Age

The median age in Monte Sereno, CA is 55.1, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 13.12% were under the age of 15, 12.86% aged 15 to 29, 43.40% aged 30 to 64, 26.28% aged 65 to 84, and 4.34% were 85 years of age and older.
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Updated Feb 22, 2025

Monte Sereno, CA population age distributions

A complete breakdown of Monte Sereno'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 42 1.21%
5 to 9 years 116 3.35%
10 to 14 years 296 8.56%
15 to 19 years 259 7.49%
20 to 24 years 61 1.76%
25 to 29 years 125 3.61%
30 to 34 years 30 0.87%
35 to 39 years 55 1.59%
40 to 44 years 156 4.51%
45 to 49 years 319 9.22%
50 to 54 years 268 7.75%
55 to 59 years 320 9.25%
60 to 64 years 353 10.21%
65 to 69 years 245 7.08%
70 to 74 years 268 7.75%
75 to 79 years 147 4.25%
80 to 84 years 249 7.2%
85 years and over 150 4.34%
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Monte Sereno, CA population by age group

Key stats
774
Population under 25 years
366
Population aged 25-44
1,260
Population aged 45-64
1,059
Population aged 65+

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

FIGURE 1

Monte Sereno, CA population by age group.

The largest age group is 60 to 64 years with a population of 353 (10.21% of the total population).

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

The largest age group in Monte Sereno, CA was for the group of age 60 to 64 years with a population of 353 (10.21%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Monte Sereno, CA was the 30 to 34 years with a population of 30 (0.87%).

Monte Sereno, CA population by age cohort

To better understand the age distribution of Monte Sereno, 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

Monte Sereno, CA population by age cohort

The largest age group was 18 to 64 years with a population of 1,776 (51.34% of the total population).

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

Monte Sereno, CA population by age cohort

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

Age Group Population % of Total Population
Under 18 years 624 18.04%
18 to 64 years 1,776 51.34%
65 years and over 1,059 30.62%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Monte Sereno 's population under 18 was 18.04%, compared to the 22.16% nationwide.
  • Monte Sereno's working population (between 18 and 64) was 51.34%, compared to 61% nationwide.
  • Monte Sereno's elderly or the senior population (over 65 age) was 30.62% as compared to 16.84% nationwide.

Monte Sereno, CA population pyramid

Population pyramid for Monte Sereno, 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 Monte Sereno's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Monte Sereno, CA, is 23.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Monte Sereno, CA, is 54.4.
  • Total dependency ratio for Monte Sereno, CA is 77.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Monte Sereno, CA is 1.8.

FIGURE 3

Monte Sereno, CA population pyramid

Monte Sereno 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.

Monte Sereno, CA population pyramid

Here's the Monte Sereno, CA's male and female population across different age groups .

Age Group Population(Male) Population(Female) Total Population
Under 5 years 42 0 42
5 to 9 years 54 62 116
10 to 14 years 132 164 296
15 to 19 years 154 105 259
20 to 24 years 61 0 61
25 to 29 years 85 40 125
30 to 34 years 0 30 30
35 to 39 years 45 10 55
40 to 44 years 54 102 156
45 to 49 years 130 189 319
50 to 54 years 110 158 268
55 to 59 years 154 166 320
60 to 64 years 242 111 353
65 to 69 years 115 130 245
70 to 74 years 88 180 268
75 to 79 years 78 69 147
80 to 84 years 160 89 249
85 years and over 49 101 150
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Things to know

What is the population of Monte Sereno, CA under 18?

Monte Sereno's population under the age of 18 is 624, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 18.04% of the total resident population of Monte Sereno, CA.

What is the aging population in Monte Sereno, CA?

Monte Sereno's population aged 65 years and above was 1,059. As per the U.S. Census Bureau's American Community Survey, this population is 30.62% of the entire population.

References

Datasets

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

Key observations

The largest age group in Monte Sereno, CA was for the group of age 60 to 64 years years with a population of 353 (10.21%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Monte Sereno, CA was the 30 to 34 years years with a population of 30 (0.87%). 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 Monte Sereno is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Monte Sereno 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 Monte Sereno Population by Age. You can refer the same here

Monte Sereno, CA Age Cohorts Dataset: Children, Working Adults, and Seniors in Monte Sereno - 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 Monte Sereno 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 Monte Sereno. 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 1,776 (51.34% 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 Monte Sereno population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Monte Sereno is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Monte Sereno 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 Monte Sereno Population by Age. You can refer the same here

Monte Sereno, 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 Monte Sereno, CA population pyramid, which represents the Monte Sereno 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 Monte Sereno, CA, is 23.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Monte Sereno, CA, is 54.4.
  • Total dependency ratio for Monte Sereno, CA is 77.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Monte Sereno, CA is 1.8.
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 Monte Sereno population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Monte Sereno for the selected age group is shown in the following column.
  • Population (Female): The female population in the Monte Sereno for the selected age group is shown in the following column.
  • Total Population: The total population of the Monte Sereno 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 Monte Sereno 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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