San Diego, CA Population by Gender

The total population of San Diego is estimated to be 1.39 million with 703,091 males (50.76%) and 681,970 females (49.24%). There are 21,121 less females than males in San Diego.
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Updated Feb 24, 2025

San Diego, CA population by gender

The table below shows San Diego's population by gender

Gender Population % of Total Population
Female 681,970 49.24%
Male 703,091 50.76%
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San Diego, CA population by gender, in percentage

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.24% females and 50.76% males in San Diego, CA.

The above comparison shows there are less females than males in the San Diego city as compared to the nation.

FIGURE 1

San Diego, CA population by gender.

There is a slight majority of male population, with 50.76% of total population being male.

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

San Diego, CA gender ratio

Gender Ratio:
103.1
Men
100
Women

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

In San Diego, CA, there are more men than women. The San Diego, CA gender ratio is 103.1:100 i.e. 103.1 men to 100 women (1.031).

This ratio is higher than the national average of 98:100 i.e 98 men to 100 women (0.980).

San Diego, CA gender ratio by age

In San Diego, CA, the sex ratio for children under 18 years is 104.6 boys per 100 girls (104.6:100).Having said that, for seniors aged 80 and older, there are 72.3 males per 100 females (72.3:100).

On the national level, the sex ratio (male per 100 females) for under 18 age group is 104.8:100, and 65.6:100 for the senior population 80 years and older.

San Diego, CA gender ratio by age

The table below lists the male and female population in each age group along with the gender ratio for San Diego, CA.

Age Group Population (Male) Population (Female) Gender Ratio
Under 5 years 36,185 36,756 0.98
5 to 9 years 36,720 33,781 1.09
10 to 14 years 38,042 35,265 1.08
15 to 19 years 42,976 42,279 1.02
20 to 24 years 56,371 49,770 1.13
25 to 29 years 67,846 62,866 1.08
30 to 34 years 68,922 60,016 1.15
35 to 39 years 56,833 51,862 1.10
40 to 44 years 49,343 45,712 1.08
45 to 49 years 43,364 41,833 1.04
50 to 54 years 42,643 38,980 1.09
55 to 59 years 38,388 39,054 0.98
60 to 64 years 37,158 35,807 1.04
65 to 69 years 29,743 33,492 0.89
70 to 74 years 23,086 27,878 0.83
75 to 79 years 16,151 19,894 0.81
80 to 84 years 10,034 12,991 0.77
85 years and over 9,286 13,734 0.68
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Interesting observation from the above table:

  • The sex ratio at birth is 0.984 i.e. 98.4 boys per 100 girls.
  • For the 60-64 years, the sex ratio is 1.038 i.e. 3.8 more men per 100 women.
  • While for senior most population of 85+ age group, the sex ratio is 0.676 i.e. 67.6 senior men per 100 senior women.

San Diego, CA population by gender & age

For male population, the largest age group is 30-34 years with a population of 68,922. Whereas, for the female population, the largest age group is 25-29 years with a population of 62,866.

As you can note from the above numbers, the largest age group for men and women are different.

FIGURE 2

San Diego, CA population by gender and age.

Largest age group (population): Male # 30-34 years (68,922) | Female # 25-29 years (62,866).

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

Under the age of 5, there are 36,185 boys and 36,756 girls in San Diego, CA. Thus there are 571 less boys than girls under the age of 5.

Between the age group of 60-64 years, there are 37,158 males and 35,807 females in San Diego, CA. Thus there are 1,351 more males than females between the age of 60 and 64 years.

For the senior most age group of 85+ years, there are 9,286 males and 13,734 females.

Things to know

What percent of San Diego, CA is female?

According to the ACS survey, of the total San Diego, CA population of 1.39 million, 49.24% percent are females.

What percentage of San Diego, CA is male?

According to the ACS survey, of the total San Diego, CA population of 1.39 million, 50.76% percent are males.

What is the male to female ratio in San Diego, CA?

In San Diego, CA, the male to female ratio is 103.1:100 i.e. 103.1 men to 100 women (1.031).

References

Datasets

Explore datasets by year of publication.
2025
San Diego, CA Population Breakdown by Gender Dataset: Male and Female Population Distribution // 2025 Edition
Last updated February 24, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the population of San Diego by gender, including both male and female populations. This dataset can be utilized to understand the population distribution of San Diego across both sexes and to determine which sex constitutes the majority.

Key observations

There is a slight majority of male population, with 50.76% of total population being male. 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.

Scope of gender :

Please note that American Community Survey asks a question about the respondents current sex, but not about gender, sexual orientation, or sex at birth. The question is intended to capture data for biological sex, not gender. Respondents are supposed to respond with the answer as either of Male or Female. Our research and this dataset mirrors the data reported as Male and Female for gender distribution analysis. No further analysis is done on the data reported from the Census Bureau.

Variables / Data Columns

  • Gender: This column displays the Gender (Male / Female)
  • Population: The population of the gender in the San Diego is shown in this column.
  • % of Total Population: This column displays the percentage distribution of each gender as a proportion of San Diego 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 Diego Population by Race & Ethnicity. You can refer the same here

San Diego, CA Population Breakdown by Gender and Age Dataset: Male and Female Population Distribution Across 18 Age Groups // 2025 Edition
Last updated February 24, 2025
ACS
Free
Neilsberg
CSV, JSON
2019-2023
CC BY 4.0
About this dataset

Context

The dataset tabulates the population of San Diego by gender across 18 age groups. It lists the male and female population in each age group along with the gender ratio for San Diego. The dataset can be utilized to understand the population distribution of San Diego by gender and age. For example, using this dataset, we can identify the largest age group for both Men and Women in San Diego. Additionally, it can be used to see how the gender ratio changes from birth to senior most age group and male to female ratio across each age group for San Diego.

Key observations

Largest age group (population): Male # 30-34 years (68,922) | Female # 25-29 years (62,866). 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

Scope of gender :

Please note that American Community Survey asks a question about the respondents current sex, but not about gender, sexual orientation, or sex at birth. The question is intended to capture data for biological sex, not gender. Respondents are supposed to respond with the answer as either of Male or Female. Our research and this dataset mirrors the data reported as Male and Female for gender distribution analysis.

Variables / Data Columns

  • Age Group: This column displays the age group for the San Diego population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the San Diego is shown in the following column.
  • Population (Female): The female population in the San Diego is shown in the following column.
  • Gender Ratio: Also known as the sex ratio, this column displays the number of males per 100 females in San Diego for each age group.

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 Diego Population by Gender. 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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