Marshall County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Marshall County, Iowa
Marshall County, Iowa Age & Gender Statistics (2024)
Total Population
40,114
Median Age
38.5
Male Median
37.7
Female Median
39.5
Marshall County, Iowa Population Growth
Marshall County, Iowa Demographic Trend
Since 2010, the population of has changed by -0.0%%.
-0.0%% Growth
Marshall County, Iowa Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Marshall County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.5 | 40,114 |
| 2023 | 38.7 | 39,971 |
| 2022 | 38.5 | 40,049 |
| 2021 | 38.4 | 40,137 |
| 2020 | 38.3 | 39,804 |
| 2019 | 38.7 | 39,964 |
| 2018 | 39.1 | 40,271 |
| 2017 | 38.5 | 40,476 |
| 2016 | 38.7 | 40,735 |
| 2015 | 38.9 | 40,962 |
| 2014 | 38.6 | 40,922 |
| 2013 | 38.9 | 40,800 |
| 2012 | 39.4 | 40,568 |
| 2011 | 39.3 | 40,398 |
| 2010 | 39.4 | 40,131 |
Marshall County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.8% |
| 5–17 | 19.5% |
| 18–24 | 8.6% |
| 25–34 | 11.5% |
| 35–54 | 23.5% |
| 55–64 | 12.9% |
| 65+ | 18.2% |
Dependency Ratios for Marshall County, Iowa
- Total Dependency Ratio:
- 77.2
- Youth Dependency:
- 44.9
- Old-Age Dependency:
- 32.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Marshall County, Iowa
The median age in Marshall County, Iowa is 38.5 years.
According to latest Census data, the total population of Marshall County, Iowa is 40,114.
In Marshall County, Iowa, seniors (ages 65+) make up 18.2% of the population, while children under 18 represent 19.5%.
Based on historical data since 2010, the population in Marshall County, Iowa has remained stable.