Des Moines County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Des Moines County, Iowa
Des Moines County, Iowa Age & Gender Statistics (2024)
Total Population
38,487
Median Age
42.3
Male Median
41.5
Female Median
43.1
Des Moines County, Iowa Population Growth

Des Moines County, Iowa Demographic Trend
Since 2010, the population of has changed by -4.4%%.
-4.4%% Growth
Des Moines County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Des Moines County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.3 | 38,487 |
| 2023 | 42.2 | 38,597 |
| 2022 | 42.1 | 38,824 |
| 2021 | 42.7 | 39,069 |
| 2020 | 42.7 | 39,227 |
| 2019 | 42.9 | 39,386 |
| 2018 | 42.6 | 39,600 |
| 2017 | 42.5 | 39,876 |
| 2016 | 42.2 | 40,114 |
| 2015 | 42.1 | 40,208 |
| 2014 | 41.7 | 40,265 |
| 2013 | 41.8 | 40,301 |
| 2012 | 41.8 | 40,268 |
| 2011 | 41.7 | 40,255 |
| 2010 | 41.5 | 40,266 |
Des Moines County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.9% |
| 5–17 | 16.3% |
| 18–24 | 7.5% |
| 25–34 | 11.9% |
| 35–54 | 23.4% |
| 55–64 | 13.7% |
| 65+ | 21.3% |
Dependency Ratios for Des Moines County, Iowa
- Total Dependency Ratio:
- 77.0
- Youth Dependency:
- 39.4
- Old-Age Dependency:
- 37.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Des Moines County, Iowa
The median age in Des Moines County, Iowa is 42.3 years.
According to latest Census data, the total population of Des Moines County, Iowa is 38,487.
In Des Moines County, Iowa, seniors (ages 65+) make up 21.3% of the population, while children under 18 represent 16.3%.
Based on historical data since 2010, the population in Des Moines County, Iowa has remained stable.