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Monterey County, CA Population by Age

The median age in Monterey County, CA is 34.9, as per 2021 ACS 5-Year Estimates. Of the total population, 21.96% were under the age of 15, 21.13% aged 15 to 29, 43.26% aged 30 to 64, 11.83% aged 65 to 84, and 1.83% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Monterey County, CA population age distribution

A complete breakdown of Monterey 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 30,214 6.88%
5 to 9 years 31,576 7.19%
10 to 14 years 34,584 7.88%
15 to 19 years 32,078 7.31%
20 to 24 years 29,977 6.83%
25 to 29 years 30,683 6.99%
30 to 34 years 30,878 7.03%
35 to 39 years 29,511 6.72%
40 to 44 years 28,641 6.52%
45 to 49 years 26,530 6.04%
50 to 54 years 25,284 5.76%
55 to 59 years 25,500 5.81%
60 to 64 years 23,558 5.37%
65 to 69 years 20,144 4.59%
70 to 74 years 15,766 3.59%
75 to 79 years 9,576 2.18%
80 to 84 years 6,428 1.46%
85 years and over 8,025 1.83%
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TABLE OF CONTENTS

Monterey County, CA population by age group

Key stats
158,429
Population under 25 years
119,713
Population aged 25-44
100,872
Population aged 45-64
59,939
Population aged 65+

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

The graph shows Monterey 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
Monterey County, CA population by age group. The largest age group was 10-14 years with a poulation of 34,584 (7.88% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Monterey County, CA was for the group of age 10-14 years with a population of 34,584 (7.88%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Monterey County, CA was the 80-84 years with a population of 6,428 (1.46%).

Monterey County, CA population by age cohort

To better understand the age distribution of Monterey County, 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
The pie chart shows Monterey 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.
Monterey County, CA 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 263,580 (60.05% 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 115,434 26.3%
18 to 64 years 263,580 60.05%
85 years and over 59,939 13.65%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Monterey County's population under 18 was 26.30%, compared to the 22.51% nationwide.
  • Monterey County's working population (between 18 and 64) was 60.05%, compared to 61.45% nationwide.
  • Monterey County's elderly or the senior population (over 65 age) was 13.65% as compared to 16.04% nationwide.

Monterey County, CA population pyramid

Population pyramid for Monterey County, 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 Monterey County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Monterey County, CA, is 34.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Monterey County, CA, is 21.2.
  • Total dependency ratio for Monterey County, CA is 55.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Monterey County, CA is 4.7.
The graph shows Monterey 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.
Monterey County, CA population pyramid i.e. Monterey County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Monterey County, CA's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 15,378 14,836 30,214
5 to 9 years 16,427 15,149 31,576
10 to 14 years 17,510 17,074 34,584
15 to 19 years 15,946 16,132 32,078
20 to 24 years 15,547 14,430 29,977
25 to 29 years 16,073 14,610 30,683
30 to 34 years 16,512 14,366 30,878
35 to 39 years 15,620 13,891 29,511
40 to 44 years 15,630 13,011 28,641
45 to 49 years 14,126 12,404 26,530
50 to 54 years 13,372 11,912 25,284
55 to 59 years 12,604 12,896 25,500
60 to 64 years 11,846 11,712 23,558
65 to 69 years 9,761 10,383 20,144
70 to 74 years 7,662 8,104 15,766
75 to 79 years 4,539 5,037 9,576
80 to 84 years 2,776 3,652 6,428
85 years and over 2,966 5,059 8,025
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Things to know

What is the population of Monterey County, CA under 18?

Monterey County's population under the age of 18 is 115,434, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 26.30% of the total resident population of Monterey County, CA.

What is the aging population in Monterey County, CA?

Monterey County's population aged 65 years and above was 59,939. As per the U.S. Census Bureau's American Community Survey, this population is 13.65% of the entire population.

References

Datasets

Monterey County, CA Age Group Population Dataset: A complete breakdown of Monterey 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 Monterey 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 Monterey County. The dataset can be utilized to understand the population distribution of Monterey County by age. For example, using this dataset, we can identify the largest age group in Monterey County.

Key observations

The largest age group in Monterey County, CA was for the group of age 10-14 years with a population of 34,584 (7.88%), according to the 2021 American Community Survey. At the same time, the smallest age group in Monterey County, CA was the 80-84 years with a population of 6,428 (1.46%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

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

Context

The dataset tabulates the Monterey 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 Monterey 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.

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

Monterey County, CA 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 Monterey County, CA population pyramid, which represents the Monterey 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 Monterey County, CA, is 34.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Monterey County, CA, is 21.2.
  • Total dependency ratio for Monterey County, CA is 55.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Monterey County, CA is 4.7.

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

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Monterey County, CA Demographics Monterey County, CA 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