Plymouth County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Plymouth County, Iowa
Plymouth County, Iowa Age & Gender Statistics (2024)
Total Population
25,747
Median Age
41.3
Male Median
40.3
Female Median
41.9
Plymouth County, Iowa Population Growth
Plymouth County, Iowa Demographic Trend
Since 2010, the population of has changed by +3.3%%.
+3.3%% Growth
Plymouth County, Iowa Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Plymouth County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.3 | 25,747 |
| 2023 | 41.1 | 25,699 |
| 2022 | 40.9 | 25,621 |
| 2021 | 40.4 | 25,543 |
| 2020 | 40.5 | 25,141 |
| 2019 | 40.0 | 25,068 |
| 2018 | 39.9 | 25,039 |
| 2017 | 40.5 | 25,027 |
| 2016 | 41.5 | 24,972 |
| 2015 | 41.8 | 24,853 |
| 2014 | 42.1 | 24,899 |
| 2013 | 42.4 | 24,923 |
| 2012 | 42.5 | 24,911 |
| 2011 | 41.9 | 24,915 |
| 2010 | 41.5 | 24,933 |
Plymouth County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.9% |
| 5–17 | 19.1% |
| 18–24 | 7.0% |
| 25–34 | 11.0% |
| 35–54 | 23.8% |
| 55–64 | 13.4% |
| 65+ | 19.8% |
Dependency Ratios for Plymouth County, Iowa
- Total Dependency Ratio:
- 81.2
- Youth Dependency:
- 45.3
- Old-Age Dependency:
- 35.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Plymouth County, Iowa
The median age in Plymouth County, Iowa is 41.3 years.
According to latest Census data, the total population of Plymouth County, Iowa is 25,747.
In Plymouth County, Iowa, seniors (ages 65+) make up 19.8% of the population, while children under 18 represent 19.1%.
Based on historical data since 2010, the population in Plymouth County, Iowa has remained stable.