San Marcos, CA Population by Gender

The total population of San Marcos is estimated to be 94,313 with 47,073 males (49.91%) and 47,240 females (50.09%). There are 167 more females than males in San Marcos.
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Updated Sep 15, 2023

San Marcos, CA population by gender

The table below shows San Marcos's population by gender

Gender Population % of Total Population
Female 47,240 50.09%
Male 47,073 49.91%
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San Marcos, CA population by gender, in percentage

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.09% females and 49.91% males in San Marcos, CA.

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

The pie chart shows San Marcos, CA population by gender with male and female population as a percentage of total population. The female population is shown in pink color and male population is shown in blue color.
San Marcos, CA population by gender. There is a slight majority of female population, with 50.09% of total population being female. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

San Marcos, CA gender ratio

Gender Ratio:
99.6
Men
100
Women

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

In San Marcos, CA, there are less men than women. The San Marcos, CA gender ratio is 99.6:100 i.e. 99.6 men to 100 women (0.996).

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

San Marcos, CA gender ratio by age

In San Marcos, CA, the sex ratio for children under 18 years is 110.8 boys per 100 girls (110.8:100).Having said that, for seniors aged 80 and older, there are 65.9 males per 100 females (65.9:100).

On the national level, the sex ratio (male per 100 females) for under 18 age group is 104.8:100, and 64.5:100 for the senior population 80 years and older.

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

Age Group Population (Male) Population (Female) Gender Ratio
Under 5 years 3,700 2,793 1.32
5 to 9 years 3,732 3,845 0.97
10 to 14 years 3,913 3,587 1.09
15 to 19 years 3,153 3,417 0.92
20 to 24 years 3,207 2,683 1.20
25 to 29 years 3,035 2,566 1.18
30 to 34 years 3,152 3,395 0.93
35 to 39 years 3,610 3,926 0.92
40 to 44 years 4,068 3,416 1.19
45 to 49 years 3,168 3,282 0.97
50 to 54 years 2,535 2,696 0.94
55 to 59 years 2,547 2,624 0.97
60 to 64 years 2,370 1,966 1.21
65 to 69 years 1,616 2,270 0.71
70 to 74 years 1,268 1,957 0.65
75 to 79 years 814 1,018 0.80
80 to 84 years 530 773 0.69
85 years and over 655 1,026 0.64
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Interesting observation from the above table:

  • The sex ratio at birth is 1.325 i.e. 132.5 boys per 100 girls.
  • For the 60-64 years, the sex ratio is 1.205 i.e. 20.5 more men per 100 women.
  • While for senior most population of 85+ age group, the sex ratio is 0.638 i.e. 63.8 senior men per 100 senior women.

San Marcos, CA population by gender & age

For male population, the largest age group is 40-44 years with a population of 4,068. Whereas, for the female population, the largest age group is 35-39 years with a population of 3,926.

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

The grouped bar chart shows San Marcos, CA population by age and gender across 18 age groups, defined between the age of 0 and 85 and above. The female population is shown in pink color bar and male population is shown in blue color bar. Age group is plotted on x axis and population on y axis.
California population by gender and age. Largest age group (population): Male # 40-44 years (4,068) | Female # 35-39 years (3,926). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Under the age of 5, there are 3,700 boys and 2,793 girls in San Marcos, CA. Thus there are 907 more boys than girls under the age of 5.

Between the age group of 60-64 years, there are 2,370 males and 1,966 females in San Marcos, CA. Thus there are 404 more males than females between the age of 60 and 64 years.

For the senior most age group of 85+ years, there are 655 males and 1,026 females.

Things to know

What percent of San Marcos, CA is female?

According to the ACS survey, of the total San Marcos, CA population of 94,313, 50.09% percent are females.

What percentage of San Marcos, CA is male?

According to the ACS survey, of the total San Marcos, CA population of 94,313, 49.91% percent are males.

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

In San Marcos, CA, the male to female ratio is 99.6:100 i.e. 99.6 men to 100 women (0.996).

References

Datasets

San Marcos, CA Population Breakdown by Gender
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

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

Key observations

There is a slight majority of female population, with 50.09% of total population being female. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

San Marcos population by gender

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 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 Marcos is shown in this column.
  • % of Total Population: This column displays the percentage distribution of each gender as a proportion of San Marcos 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 Marcos Population by Gender. You can refer the same here

San Marcos, CA Population Breakdown by Gender and Age
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the population of San Marcos by gender across 18 age groups. It lists the male and female population in each age group along with the gender ratio for San Marcos. The dataset can be utilized to understand the population distribution of San Marcos by gender and age. For example, using this dataset, we can identify the largest age group for both Men and Women in San Marcos. 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 Marcos.

Key observations

Largest age group (population): Male # 40-44 years (4,068) | Female # 35-39 years (3,926). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

San Marcos population by gender and age

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

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 Marcos population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the San Marcos is shown in the following column.
  • Population (Female): The female population in the San Marcos 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 Marcos 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 Marcos Population by Gender. You can refer the same here

About the author

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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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