Brown County, South Dakota Age & Gender Distribution (2024)
Population distribution by age and gender for Brown County, South Dakota
Brown County, South Dakota Age & Gender Statistics (2024)
Total Population
37,877
Median Age
37.8
Male Median
36.8
Female Median
38.7
Brown County, South Dakota Population Growth

Brown County, South Dakota Demographic Trend
Since 2010, the population of has changed by +5.2%%.
+5.2%% Growth
Brown County, South Dakota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Brown County, South Dakota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 37.8 | 37,877 |
| 2023 | 37.8 | 38,079 |
| 2022 | 37.3 | 38,278 |
| 2021 | 37.0 | 38,471 |
| 2020 | 37.4 | 38,988 |
| 2019 | 37.0 | 38,915 |
| 2018 | 36.9 | 38,840 |
| 2017 | 37.3 | 38,637 |
| 2016 | 37.7 | 38,430 |
| 2015 | 38.1 | 38,060 |
| 2014 | 38.4 | 37,528 |
| 2013 | 38.9 | 36,982 |
| 2012 | 39.4 | 36,562 |
| 2011 | 39.2 | 36,265 |
| 2010 | 38.9 | 36,011 |
Brown County, South Dakota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 18.0% |
| 18–24 | 10.6% |
| 25–34 | 11.6% |
| 35–54 | 23.5% |
| 55–64 | 13.0% |
| 65+ | 17.8% |
Dependency Ratios for Brown County, South Dakota
- Total Dependency Ratio:
- 70.6
- Youth Dependency:
- 40.3
- Old-Age Dependency:
- 30.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Brown County, South Dakota
The median age in Brown County, South Dakota is 37.8 years.
According to latest Census data, the total population of Brown County, South Dakota is 37,877.
In Brown County, South Dakota, seniors (ages 65+) make up 17.8% of the population, while children under 18 represent 18.0%.
Based on historical data since 2010, the population in Brown County, South Dakota has remained stable.