Marshall County, South Dakota Age & Gender Distribution (2024)
Population distribution by age and gender for Marshall County, South Dakota
Marshall County, South Dakota Age & Gender Statistics (2024)
Total Population
4,344
Median Age
42.5
Male Median
40.6
Female Median
45.1
Marshall County, South Dakota Population Growth

Marshall County, South Dakota Demographic Trend
Since 2010, the population of has changed by -5.9%%.
-5.9%% Growth
Marshall County, South Dakota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Marshall County, South Dakota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.5 | 4,344 |
| 2023 | 42.8 | 4,355 |
| 2022 | 43.7 | 4,363 |
| 2021 | 42.4 | 4,373 |
| 2020 | 43.1 | 4,881 |
| 2019 | 39.8 | 4,891 |
| 2018 | 39.7 | 4,895 |
| 2017 | 41.3 | 4,759 |
| 2016 | 41.8 | 4,743 |
| 2015 | 42.6 | 4,701 |
| 2014 | 42.7 | 4,668 |
| 2013 | 42.5 | 4,657 |
| 2012 | 43.0 | 4,631 |
| 2011 | 42.8 | 4,614 |
| 2010 | 43.1 | 4,618 |
Marshall County, South Dakota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.9% |
| 5–17 | 17.4% |
| 18–24 | 7.8% |
| 25–34 | 9.2% |
| 35–54 | 20.6% |
| 55–64 | 14.9% |
| 65+ | 23.2% |
Dependency Ratios for Marshall County, South Dakota
- Total Dependency Ratio:
- 90.7
- Youth Dependency:
- 46.4
- Old-Age Dependency:
- 44.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Marshall County, South Dakota
The median age in Marshall County, South Dakota is 42.5 years.
According to latest Census data, the total population of Marshall County, South Dakota is 4,344.
In Marshall County, South Dakota, seniors (ages 65+) make up 23.2% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Marshall County, South Dakota has remained stable.