South Dakota population age distributions
A complete breakdown of South Dakota'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 | 58,121 | 6.46% |
| 5 to 9 years | 61,879 | 6.88% |
| 10 to 14 years | 62,673 | 6.97% |
| 15 to 19 years | 61,320 | 6.82% |
| 20 to 24 years | 59,064 | 6.57% |
| 25 to 29 years | 55,910 | 6.22% |
| 30 to 34 years | 58,201 | 6.47% |
| 35 to 39 years | 60,110 | 6.68% |
| 40 to 44 years | 52,169 | 5.8% |
| 45 to 49 years | 47,490 | 5.28% |
| 50 to 54 years | 48,223 | 5.36% |
| 55 to 59 years | 55,247 | 6.14% |
| 60 to 64 years | 60,684 | 6.75% |
| 65 to 69 years | 53,554 | 5.96% |
| 70 to 74 years | 42,723 | 4.75% |
| 75 to 79 years | 25,392 | 2.82% |
| 80 to 84 years | 17,298 | 1.92% |
| 85 years and over | 19,136 | 2.13% |
TABLE OF CONTENTS
South Dakota population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2019-2023
FIGURE 1
South Dakota population by age group.
The largest age group is 10 to 14 years with a population of 62,673 (6.97% of the total population).
The largest age group in South Dakota was for the group of age 10 to 14 years with a population of 62,673 (6.97%), according to the 2019-2023 American Community Survey.
At the same time, the smallest age group in South Dakota was the 80 to 84 years with a population of 17,298 (1.92%).
South Dakota population by age cohort
To better understand the age distribution of South Dakota'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
South Dakota population by age cohort
The largest age group was 18 to 64 years with a population of 521,271 (57.97% of the total population).
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- South Dakota 's population under 18 was 24.45%, compared to the 22.16% nationwide.
- South Dakota's working population (between 18 and 64) was 57.97%, compared to 61% nationwide.
- South Dakota's elderly or the senior population (over 65 age) was 17.58% as compared to 16.84% nationwide.
South Dakota population pyramid
Population pyramid for South Dakota 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 South Dakota's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for South Dakota, is 32.7.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for South Dakota, is 28.3.
- Total dependency ratio for South Dakota is 61.0.
- Potential support ratio, which is the number of youth (working age population) per elderly, for South Dakota is 3.5.
FIGURE 3
South Dakota population pyramid
South Dakota population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
South Dakota population pyramid
Here's the South Dakota's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 29,251 | 28,870 | 58,121 |
| 5 to 9 years | 31,340 | 30,539 | 61,879 |
| 10 to 14 years | 32,245 | 30,428 | 62,673 |
| 15 to 19 years | 31,667 | 29,653 | 61,320 |
| 20 to 24 years | 30,878 | 28,186 | 59,064 |
| 25 to 29 years | 29,529 | 26,381 | 55,910 |
| 30 to 34 years | 30,102 | 28,099 | 58,201 |
| 35 to 39 years | 32,070 | 28,040 | 60,110 |
| 40 to 44 years | 26,343 | 25,826 | 52,169 |
| 45 to 49 years | 24,538 | 22,952 | 47,490 |
| 50 to 54 years | 24,687 | 23,536 | 48,223 |
| 55 to 59 years | 27,381 | 27,866 | 55,247 |
| 60 to 64 years | 30,962 | 29,722 | 60,684 |
| 65 to 69 years | 27,461 | 26,093 | 53,554 |
| 70 to 74 years | 20,988 | 21,735 | 42,723 |
| 75 to 79 years | 12,015 | 13,377 | 25,392 |
| 80 to 84 years | 7,735 | 9,563 | 17,298 |
| 85 years and over | 6,405 | 12,731 | 19,136 |
Things to know
What is the population of South Dakota under 18?
South Dakota's population under the age of 18 is 219,820, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 24.45% of the total resident population of South Dakota.
What is the aging population in South Dakota?
South Dakota's population aged 65 years and above was 158,103. As per the U.S. Census Bureau's American Community Survey, this population is 17.58% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates
