Hamilton County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Hamilton County, Iowa
Hamilton County, Iowa Age & Gender Statistics (2024)
Total Population
14,886
Median Age
41.7
Male Median
40.1
Female Median
44.0
Hamilton County, Iowa Population Growth

Hamilton County, Iowa Demographic Trend
Since 2010, the population of has changed by -6.2%%.
-6.2%% Growth
Hamilton County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Hamilton County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.7 | 14,886 |
| 2023 | 42.2 | 14,893 |
| 2022 | 41.9 | 14,979 |
| 2021 | 42.0 | 15,073 |
| 2020 | 42.6 | 14,905 |
| 2019 | 42.6 | 14,997 |
| 2018 | 42.4 | 15,110 |
| 2017 | 42.6 | 15,201 |
| 2016 | 43.0 | 15,227 |
| 2015 | 42.4 | 15,297 |
| 2014 | 42.3 | 15,363 |
| 2013 | 42.0 | 15,486 |
| 2012 | 42.1 | 15,614 |
| 2011 | 41.4 | 15,755 |
| 2010 | 40.9 | 15,874 |
Hamilton County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 18.7% |
| 18–24 | 6.7% |
| 25–34 | 10.2% |
| 35–54 | 23.8% |
| 55–64 | 14.2% |
| 65+ | 21.2% |
Dependency Ratios for Hamilton County, Iowa
- Total Dependency Ratio:
- 81.9
- Youth Dependency:
- 43.4
- Old-Age Dependency:
- 38.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Hamilton County, Iowa
The median age in Hamilton County, Iowa is 41.7 years.
According to latest Census data, the total population of Hamilton County, Iowa is 14,886.
In Hamilton County, Iowa, seniors (ages 65+) make up 21.2% of the population, while children under 18 represent 18.7%.
Based on historical data since 2010, the population in Hamilton County, Iowa has remained stable.