Shelby County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Shelby County, Iowa
Shelby County, Iowa Age & Gender Statistics (2024)
Total Population
11,778
Median Age
44.3
Male Median
42.6
Female Median
45.5
Shelby County, Iowa Population Growth

Shelby County, Iowa Demographic Trend
Since 2010, the population of has changed by -4.5%%.
-4.5%% Growth
Shelby County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Shelby County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.3 | 11,778 |
| 2023 | 45.1 | 11,757 |
| 2022 | 45.5 | 11,737 |
| 2021 | 45.3 | 11,750 |
| 2020 | 46.5 | 11,544 |
| 2019 | 46.4 | 11,606 |
| 2018 | 46.1 | 11,694 |
| 2017 | 46.9 | 11,772 |
| 2016 | 47.0 | 11,944 |
| 2015 | 46.6 | 11,992 |
| 2014 | 46.5 | 12,034 |
| 2013 | 46.2 | 12,088 |
| 2012 | 45.8 | 12,158 |
| 2011 | 45.3 | 12,242 |
| 2010 | 44.7 | 12,328 |
Shelby County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 17.4% |
| 18–24 | 7.6% |
| 25–34 | 9.6% |
| 35–54 | 21.8% |
| 55–64 | 15.0% |
| 65+ | 23.1% |
Dependency Ratios for Shelby County, Iowa
- Total Dependency Ratio:
- 85.3
- Youth Dependency:
- 42.5
- Old-Age Dependency:
- 42.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Shelby County, Iowa
The median age in Shelby County, Iowa is 44.3 years.
According to latest Census data, the total population of Shelby County, Iowa is 11,778.
In Shelby County, Iowa, seniors (ages 65+) make up 23.1% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Shelby County, Iowa has remained stable.