Buffalo County, South Dakota Age & Gender Distribution (2024)
Population distribution by age and gender for Buffalo County, South Dakota
Buffalo County, South Dakota Age & Gender Statistics (2024)
Total Population
1,808
Median Age
22.8
Male Median
21.4
Female Median
25.9
Buffalo County, South Dakota Population Growth

Buffalo County, South Dakota Demographic Trend
Since 2010, the population of has changed by -6.4%%.
-6.4%% Growth
Buffalo County, South Dakota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Buffalo County, South Dakota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 22.8 | 1,808 |
| 2023 | 26.2 | 1,757 |
| 2022 | 24.0 | 1,859 |
| 2021 | 25.4 | 1,974 |
| 2020 | 26.1 | 2,005 |
| 2019 | 25.8 | 2,026 |
| 2018 | 25.8 | 2,053 |
| 2017 | 25.3 | 2,048 |
| 2016 | 25.1 | 2,052 |
| 2015 | 25.9 | 2,038 |
| 2014 | 25.9 | 2,013 |
| 2013 | 24.8 | 1,966 |
| 2012 | 26.4 | 1,950 |
| 2011 | 25.3 | 1,936 |
| 2010 | 23.4 | 1,932 |
Buffalo County, South Dakota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 13.0% |
| 5–17 | 26.2% |
| 18–24 | 13.9% |
| 25–34 | 10.0% |
| 35–54 | 18.4% |
| 55–64 | 9.3% |
| 65+ | 9.2% |
Dependency Ratios for Buffalo County, South Dakota
- Total Dependency Ratio:
- 93.6
- Youth Dependency:
- 75.8
- Old-Age Dependency:
- 17.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Buffalo County, South Dakota
The median age in Buffalo County, South Dakota is 22.8 years.
According to latest Census data, the total population of Buffalo County, South Dakota is 1,808.
In Buffalo County, South Dakota, seniors (ages 65+) make up 9.2% of the population, while children under 18 represent 26.2%.
Based on historical data since 2010, the population in Buffalo County, South Dakota has remained stable.