Placer County, CA Population by Age

The median age in Placer County, CA is 42.1, as per 2021 ACS 5-Year Estimates. Of the total population, 18.22% were under the age of 15, 16.56% aged 15 to 29, 45.80% aged 30 to 64, 16.97% aged 65 to 84, and 2.45% were 85 years of age and older.
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Updated Sep 17, 2023

Placer County, CA population age distribution

A complete breakdown of Placer 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 20,780 5.19%
5 to 9 years 24,950 6.23%
10 to 14 years 27,194 6.79%
15 to 19 years 25,373 6.34%
20 to 24 years 20,184 5.04%
25 to 29 years 20,721 5.18%
30 to 34 years 22,602 5.65%
35 to 39 years 26,793 6.69%
40 to 44 years 26,802 6.69%
45 to 49 years 26,572 6.64%
50 to 54 years 26,587 6.64%
55 to 59 years 27,974 6.99%
60 to 64 years 26,028 6.5%
65 to 69 years 23,703 5.92%
70 to 74 years 21,054 5.26%
75 to 79 years 13,765 3.44%
80 to 84 years 9,431 2.36%
85 years and over 9,817 2.45%
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Placer County, CA population by age group

Key stats
118,481
Population under 25 years
96,918
Population aged 25-44
107,161
Population aged 45-64
77,770
Population aged 65+

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

The graph shows Placer 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
Placer County, CA population by age group. The largest age group was 55-59 years with a poulation of 27,974 (6.99% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Placer County, CA was for the group of age 55-59 years with a population of 27,974 (6.99%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Placer County, CA was the 80-84 years with a population of 9,431 (2.36%).

Placer County, CA population by age cohort

To better understand the age distribution of Placer 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 Placer 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.
Placer 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 233,114 (58.23% 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 89,446 22.34%
18 to 64 years 233,114 58.23%
85 years and over 77,770 19.43%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Placer County's population under 18 was 22.34%, compared to the 22.51% nationwide.
  • Placer County's working population (between 18 and 64) was 58.23%, compared to 61.45% nationwide.
  • Placer County's elderly or the senior population (over 65 age) was 19.43% as compared to 16.04% nationwide.

Placer County, CA population pyramid

Population pyramid for Placer 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 Placer County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Placer County, CA, is 29.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Placer County, CA, is 31.2.
  • Total dependency ratio for Placer County, CA is 60.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Placer County, CA is 3.2.
The graph shows Placer 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.
Placer County, CA population pyramid i.e. Placer County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Age Group Population(Male) Population(Female) Total Population
Under 5 years 10,721 10,059 20,780
5 to 9 years 12,878 12,072 24,950
10 to 14 years 13,753 13,441 27,194
15 to 19 years 13,269 12,104 25,373
20 to 24 years 10,410 9,774 20,184
25 to 29 years 10,525 10,196 20,721
30 to 34 years 11,205 11,397 22,602
35 to 39 years 13,245 13,548 26,793
40 to 44 years 13,548 13,254 26,802
45 to 49 years 13,147 13,425 26,572
50 to 54 years 13,171 13,416 26,587
55 to 59 years 14,354 13,620 27,974
60 to 64 years 11,742 14,286 26,028
65 to 69 years 11,200 12,503 23,703
70 to 74 years 9,675 11,379 21,054
75 to 79 years 5,906 7,859 13,765
80 to 84 years 4,162 5,269 9,431
85 years and over 4,001 5,816 9,817
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Things to know

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

Placer County's population under the age of 18 is 89,446, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 22.34% of the total resident population of Placer County, CA.

What is the aging population in Placer County, CA?

Placer County's population aged 65 years and above was 77,770. As per the U.S. Census Bureau's American Community Survey, this population is 19.43% of the entire population.

References

Datasets

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

Key observations

The largest age group in Placer County, CA was for the group of age 55-59 years with a population of 27,974 (6.99%), according to the 2021 American Community Survey. At the same time, the smallest age group in Placer County, CA was the 80-84 years with a population of 9,431 (2.36%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

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

Context

The dataset tabulates the Placer 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 Placer 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.

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

Placer 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 Placer County, CA population pyramid, which represents the Placer 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 Placer County, CA, is 29.2.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Placer County, CA, is 31.2.
  • Total dependency ratio for Placer County, CA is 60.4.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Placer County, CA is 3.2.

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

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Population of places that contain Placer County

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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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