Ziebach County, South Dakota Age & Gender Distribution (2024)
Population distribution by age and gender for Ziebach County, South Dakota
Ziebach County, South Dakota Age & Gender Statistics (2024)
Total Population
2,377
Median Age
36.7
Male Median
38.3
Female Median
36.1
Ziebach County, South Dakota Population Growth

Ziebach County, South Dakota Demographic Trend
Since 2010, the population of has changed by -14.0%%.
-14.0%% Growth
Ziebach County, South Dakota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Ziebach County, South Dakota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 36.7 | 2,377 |
| 2023 | 36.6 | 2,410 |
| 2022 | 34.3 | 2,455 |
| 2021 | 34.5 | 2,479 |
| 2020 | 34.0 | 2,767 |
| 2019 | 33.1 | 2,791 |
| 2018 | 31.6 | 2,814 |
| 2017 | 30.5 | 2,837 |
| 2016 | 28.3 | 2,818 |
| 2015 | 27.5 | 2,833 |
| 2014 | 26.1 | 2,837 |
| 2013 | 26.0 | 2,821 |
| 2012 | 26.3 | 2,796 |
| 2011 | 25.6 | 2,780 |
| 2010 | 25.7 | 2,765 |
Ziebach County, South Dakota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 7.9% |
| 5–17 | 17.4% |
| 18–24 | 12.9% |
| 25–34 | 9.6% |
| 35–54 | 27.2% |
| 55–64 | 13.3% |
| 65+ | 11.7% |
Dependency Ratios for Ziebach County, South Dakota
- Total Dependency Ratio:
- 58.7
- Youth Dependency:
- 40.1
- Old-Age Dependency:
- 18.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Ziebach County, South Dakota
The median age in Ziebach County, South Dakota is 36.7 years.
According to latest Census data, the total population of Ziebach County, South Dakota is 2,377.
In Ziebach County, South Dakota, seniors (ages 65+) make up 11.7% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Ziebach County, South Dakota is aging.