Pennington County, SD population by gender
The table below shows Pennington County's population by gender
Gender | Population | % of Total Population |
---|---|---|
Male | 55,209 | 50.79% |
Female | 53,498 | 49.21% |
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Pennington County, SD population by gender, in percentage
The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.21% females and 50.79% males in Pennington County, SD.
The above comparison shows there are less females than males in the Pennington County county as compared to the nation.

Pennington County, SD gender ratio
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
In Pennington County, SD, there are more men than women. The Pennington County, SD gender ratio is 103.2:100 i.e. 103.2 men to 100 women (1.032).
This ratio is higher than the national average of 98:100 i.e 98 men to 100 women (0.980).
Pennington County, SD gender ratio by age
In Pennington County, SD, the sex ratio for children under 18 years is 109.5 boys per 100 girls (109.5:100).Having said that, for seniors aged 80 and older, there are 74.1 males per 100 females (74.1:100).
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 Pennington County, SD.
Age Group | Population (Male) | Population (Female) | Gender Ratio |
---|---|---|---|
Under 5 years | 3,528 | 3,373 | 1.05 |
5 to 9 years | 3,584 | 3,263 | 1.10 |
10 to 14 years | 3,850 | 3,524 | 1.09 |
15 to 19 years | 3,570 | 3,116 | 1.15 |
20 to 24 years | 3,542 | 2,753 | 1.29 |
25 to 29 years | 3,691 | 3,374 | 1.09 |
30 to 34 years | 3,734 | 3,620 | 1.03 |
35 to 39 years | 3,727 | 3,657 | 1.02 |
40 to 44 years | 2,682 | 2,566 | 1.05 |
45 to 49 years | 2,862 | 2,741 | 1.04 |
50 to 54 years | 3,138 | 3,169 | 0.99 |
55 to 59 years | 3,608 | 3,880 | 0.93 |
60 to 64 years | 4,189 | 4,135 | 1.01 |
65 to 69 years | 3,573 | 3,286 | 1.09 |
70 to 74 years | 2,763 | 2,996 | 0.92 |
75 to 79 years | 1,419 | 1,685 | 0.84 |
80 to 84 years | 913 | 1,021 | 0.89 |
85 years and over | 836 | 1,339 | 0.62 |
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 1.013 i.e. 1.3 more men per 100 women.
- While for senior most population of 85+ age group, the sex ratio is 0.624 i.e. 62.4 senior men per 100 senior women.
Pennington County, SD population by gender & age
For male population, the largest age group is 60-64 years with a population of 4,189. Whereas, for the female population, the largest age group is 60-64 years with a population of 4,135.
As you can note from the above numbers, the largest age group for men and women are same. The above comparison also shows that there are 54 less females than males, in the age group 60-64 years (The largest age group for both of the genders).

Under the age of 5, there are 3,528 boys and 3,373 girls in Pennington County, SD. Thus there are 155 more boys than girls under the age of 5.
Between the age group of 60-64 years, there are 4,189 males and 4,135 females in Pennington County, SD. Thus there are 54 more males than females between the age of 60 and 64 years.
For the senior most age group of 85+ years, there are 836 males and 1,339 females.
Things to know
What percent of Pennington County, SD is female?
According to the ACS survey, of the total Pennington County, SD population of 108,707, 49.21% percent are females.
What percentage of Pennington County, SD is male?
According to the ACS survey, of the total Pennington County, SD population of 108,707, 50.79% percent are males.
What is the male to female ratio in Pennington County, SD?
In Pennington County, SD, the male to female ratio is 103.2:100 i.e. 103.2 men to 100 women (1.032).
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates