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Illinois Population by Gender

The total population of Illinois is estimated to be 12.82 million with 6.33 million males (49.39%) and 6.49 million females (50.61%). There are 157,461 more females than males in Illinois.
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By Neilsberg Research
Updated Sep 15, 2023

Illinois population by gender

The table below shows Illinois's population by gender

Gender Population % of Total Population
Female 6,489,637 50.61%
Male 6,332,176 49.39%
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TABLE OF CONTENTS

Illinois population by gender, in percentage

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.61% females and 49.39% males in Illinois.

The above comparison shows there are more females than males in the Illinois state as compared to the nation.

The pie chart shows Illinois 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.
Illinois population by gender. There is a slight majority of female population, with 50.61% of total population being female. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Illinois gender ratio

Gender Ratio:
97.6
Men
100
Women

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

In Illinois, there are less men than women. The Illinois gender ratio is 97.6:100 i.e. 97.6 men to 100 women (0.976).

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

Illinois gender ratio by age

In Illinois, the sex ratio for children under 18 years is 104.5 boys per 100 girls (104.5:100).Having said that, for seniors aged 80 and older, there are 60.3 males per 100 females (60.3:100).

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 Illinois.

Age Group Population (Male) Population (Female) Gender Ratio
Under 5 years 381,213 364,468 1.05
5 to 9 years 397,940 383,394 1.04
10 to 14 years 433,292 413,063 1.05
15 to 19 years 434,936 415,168 1.05
20 to 24 years 422,693 410,768 1.03
25 to 29 years 443,153 437,334 1.01
30 to 34 years 439,475 431,580 1.02
35 to 39 years 434,478 429,049 1.01
40 to 44 years 409,290 403,904 1.01
45 to 49 years 406,583 406,528 1.00
50 to 54 years 412,702 414,670 1.00
55 to 59 years 431,013 438,484 0.98
60 to 64 years 395,189 418,711 0.94
65 to 69 years 318,962 352,534 0.90
70 to 74 years 240,656 278,135 0.87
75 to 79 years 149,160 190,748 0.78
80 to 84 years 94,438 132,905 0.71
85 years and over 87,003 168,194 0.52
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Interesting observation from the above table:

  • The sex ratio at birth is 1.046 i.e. 104.6 boys per 100 girls.
  • For the 60-64 years, the sex ratio is 0.944 i.e. 5.6 less men per 100 women.
  • While for senior most population of 85+ age group, the sex ratio is 0.517 i.e. 51.7 senior men per 100 senior women.

Illinois population by gender & age

For male population, the largest age group is 25-29 years with a population of 443,153. Whereas, for the female population, the largest age group is 55-59 years with a population of 438,484.

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

The grouped bar chart shows Illinois 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 # 25-29 years (443,153) | Female # 55-59 years (438,484). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Under the age of 5, there are 381,213 boys and 364,468 girls in Illinois. Thus there are 16,745 more boys than girls under the age of 5.

Between the age group of 60-64 years, there are 395,189 males and 418,711 females in Illinois. Thus there are 23,522 less males than females between the age of 60 and 64 years.

For the senior most age group of 85+ years, there are 87,003 males and 168,194 females.

Things to know

What percent of Illinois is female?

According to the ACS survey, of the total Illinois population of 12.82 million, 50.61% percent are females.

What percentage of Illinois is male?

According to the ACS survey, of the total Illinois population of 12.82 million, 49.39% percent are males.

What is the male to female ratio in Illinois?

In Illinois, the male to female ratio is 97.6:100 i.e. 97.6 men to 100 women (0.976).

References

Datasets

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

Key observations

There is a slight majority of female population, with 50.61% of total population being female. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Illinois 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 Illinois is shown in this column.
  • % of Total Population: This column displays the percentage distribution of each gender as a proportion of Illinois 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 Illinois Population by Gender. You can refer the same here

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

Key observations

Largest age group (population): Male # 25-29 years (443,153) | Female # 55-59 years (438,484). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

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

Explore related topics

Illinois Demographics Illinois Population

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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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Collection 5 Resources