Oglala Lakota County, South Dakota Age & Gender Distribution (2024)
Population distribution by age and gender for Oglala Lakota County, South Dakota
Oglala Lakota County, South Dakota Age & Gender Statistics (2024)
Total Population
13,491
Median Age
28.2
Male Median
24.7
Female Median
29.9
Oglala Lakota County, South Dakota Population Growth

Oglala Lakota County, South Dakota Demographic Trend
Since 2010, the population of has changed by -4.7%%.
-4.7%% Growth
Oglala Lakota County, South Dakota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Oglala Lakota County, South Dakota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 28.2 | 13,491 |
| 2023 | 27.0 | 13,587 |
| 2022 | 26.3 | 13,695 |
| 2021 | 26.8 | 13,835 |
| 2020 | 26.5 | 14,277 |
| 2019 | 25.8 | 14,335 |
| 2018 | 25.3 | 14,335 |
| 2017 | 25.2 | 14,291 |
| 2016 | 24.6 | 14,263 |
| 2015 | 25.1 | 14,153 |
Oglala Lakota County, South Dakota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 8.8% |
| 5–17 | 26.6% |
| 18–24 | 11.8% |
| 25–34 | 14.5% |
| 35–54 | 21.1% |
| 55–64 | 9.7% |
| 65+ | 7.5% |
Dependency Ratios for Oglala Lakota County, South Dakota
- Total Dependency Ratio:
- 75.2
- Youth Dependency:
- 62.0
- Old-Age Dependency:
- 13.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Oglala Lakota County, South Dakota
The median age in Oglala Lakota County, South Dakota is 28.2 years.
According to latest Census data, the total population of Oglala Lakota County, South Dakota is 13,491.
In Oglala Lakota County, South Dakota, seniors (ages 65+) make up 7.5% of the population, while children under 18 represent 26.6%.
Based on historical data since 2010, the population in Oglala Lakota County, South Dakota is aging.