Sonoma, CA Population by Age

The median age in Sonoma, CA is 54.4, as per 2019-2023 ACS 5 -Year Estimates. Of the total population, 10.35% were under the age of 15, 11.71% aged 15 to 29, 45.32% aged 30 to 64, 27.95% aged 65 to 84, and 4.68% were 85 years of age and older.
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Updated Feb 22, 2025

Sonoma, CA population age distributions

A complete breakdown of Sonoma'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 328 3.06%
5 to 9 years 405 3.78%
10 to 14 years 377 3.51%
15 to 19 years 684 6.38%
20 to 24 years 290 2.7%
25 to 29 years 282 2.63%
30 to 34 years 409 3.81%
35 to 39 years 552 5.15%
40 to 44 years 506 4.72%
45 to 49 years 622 5.8%
50 to 54 years 1,038 9.68%
55 to 59 years 985 9.18%
60 to 64 years 749 6.98%
65 to 69 years 798 7.44%
70 to 74 years 996 9.29%
75 to 79 years 848 7.91%
80 to 84 years 355 3.31%
85 years and over 502 4.68%
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Sonoma, CA population by age group

Key stats
2,084
Population under 25 years
1,749
Population aged 25-44
3,394
Population aged 45-64
3,499
Population aged 65+

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

FIGURE 1

Sonoma, CA population by age group.

The largest age group is 50 to 54 years with a population of 1,038 (9.68% of the total population).

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

The largest age group in Sonoma, CA was for the group of age 50 to 54 years with a population of 1,038 (9.68%), according to the 2019-2023 American Community Survey.

At the same time, the smallest age group in Sonoma, CA was the 25 to 29 years with a population of 282 (2.63%).

Sonoma, CA population by age cohort

To better understand the age distribution of Sonoma, 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

Sonoma, CA population by age cohort

The largest age group was 18 to 64 years with a population of 5,679 (52.95% of the total population).

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

Sonoma, CA population by age cohort

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

Age Group Population % of Total Population
Under 18 years 1,548 14.43%
18 to 64 years 5,679 52.95%
65 years and over 3,499 32.62%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Sonoma 's population under 18 was 14.43%, compared to the 22.16% nationwide.
  • Sonoma's working population (between 18 and 64) was 52.95%, compared to 61% nationwide.
  • Sonoma's elderly or the senior population (over 65 age) was 32.62% as compared to 16.84% nationwide.

Sonoma, CA population pyramid

Population pyramid for Sonoma, 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 Sonoma's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Sonoma, CA, is 18.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Sonoma, CA, is 57.2.
  • Total dependency ratio for Sonoma, CA is 75.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Sonoma, CA is 1.7.

FIGURE 3

Sonoma, CA population pyramid

Sonoma 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.

Sonoma, CA population pyramid

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

Age Group Population(Male) Population(Female) Total Population
Under 5 years 251 77 328
5 to 9 years 201 204 405
10 to 14 years 250 127 377
15 to 19 years 368 316 684
20 to 24 years 111 179 290
25 to 29 years 203 79 282
30 to 34 years 239 170 409
35 to 39 years 311 241 552
40 to 44 years 200 306 506
45 to 49 years 241 381 622
50 to 54 years 454 584 1,038
55 to 59 years 417 568 985
60 to 64 years 317 432 749
65 to 69 years 388 410 798
70 to 74 years 386 610 996
75 to 79 years 325 523 848
80 to 84 years 128 227 355
85 years and over 120 382 502
Exploring Sonoma's Diversity? Request Customized Data Now!

Things to know

What is the population of Sonoma, CA under 18?

Sonoma's population under the age of 18 is 1,548, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 14.43% of the total resident population of Sonoma, CA.

What is the aging population in Sonoma, CA?

Sonoma's population aged 65 years and above was 3,499. As per the U.S. Census Bureau's American Community Survey, this population is 32.62% of the entire population.

References

Datasets

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

Key observations

The largest age group in Sonoma, CA was for the group of age 50 to 54 years years with a population of 1,038 (9.68%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Sonoma, CA was the 25 to 29 years years with a population of 282 (2.63%). 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 Sonoma is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Sonoma 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 Sonoma Population by Age. You can refer the same here

Sonoma, CA Age Cohorts Dataset: Children, Working Adults, and Seniors in Sonoma - 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 Sonoma 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 Sonoma. 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 5,679 (52.95% 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 Sonoma population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Sonoma is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Sonoma 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 Sonoma Population by Age. You can refer the same here

Sonoma, 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 Sonoma, CA population pyramid, which represents the Sonoma 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 Sonoma, CA, is 18.1.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Sonoma, CA, is 57.2.
  • Total dependency ratio for Sonoma, CA is 75.3.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Sonoma, CA is 1.7.
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 Sonoma population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Sonoma for the selected age group is shown in the following column.
  • Population (Female): The female population in the Sonoma for the selected age group is shown in the following column.
  • Total Population: The total population of the Sonoma 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 Sonoma 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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