Carroll County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Carroll County, Iowa
Carroll County, Iowa Age & Gender Statistics (2024)
Total Population
20,594
Median Age
41.1
Male Median
39.3
Female Median
43.2
Carroll County, Iowa Population Growth

Carroll County, Iowa Demographic Trend
Since 2010, the population of has changed by -1.0%%.
-1.0%% Growth
Carroll County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Carroll County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.1 | 20,594 |
| 2023 | 41.8 | 20,677 |
| 2022 | 42.4 | 20,728 |
| 2021 | 42.0 | 20,756 |
| 2020 | 42.5 | 20,150 |
| 2019 | 42.0 | 20,281 |
| 2018 | 41.7 | 20,344 |
| 2017 | 41.7 | 20,428 |
| 2016 | 42.0 | 20,555 |
| 2015 | 42.3 | 20,629 |
| 2014 | 41.9 | 20,702 |
| 2013 | 42.2 | 20,732 |
| 2012 | 42.5 | 20,751 |
| 2011 | 42.5 | 20,809 |
| 2010 | 42.2 | 20,805 |
Carroll County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.9% |
| 5–17 | 18.4% |
| 18–24 | 7.5% |
| 25–34 | 11.3% |
| 35–54 | 21.7% |
| 55–64 | 14.0% |
| 65+ | 21.2% |
Dependency Ratios for Carroll County, Iowa
- Total Dependency Ratio:
- 83.7
- Youth Dependency:
- 44.8
- Old-Age Dependency:
- 38.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Carroll County, Iowa
The median age in Carroll County, Iowa is 41.1 years.
According to latest Census data, the total population of Carroll County, Iowa is 20,594.
In Carroll County, Iowa, seniors (ages 65+) make up 21.2% of the population, while children under 18 represent 18.4%.
Based on historical data since 2010, the population in Carroll County, Iowa has remained stable.