Benton County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Benton County, Iowa
Benton County, Iowa Age & Gender Statistics (2024)
Total Population
25,724
Median Age
43.1
Male Median
42.3
Female Median
44.0
Benton County, Iowa Population Growth

Benton County, Iowa Demographic Trend
Since 2010, the population of has changed by -1.4%%.
-1.4%% Growth
Benton County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Benton County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 43.1 | 25,724 |
| 2023 | 43.3 | 25,698 |
| 2022 | 43.0 | 25,652 |
| 2021 | 43.1 | 25,654 |
| 2020 | 43.1 | 25,558 |
| 2019 | 42.6 | 25,636 |
| 2018 | 42.6 | 25,626 |
| 2017 | 42.1 | 25,646 |
| 2016 | 41.8 | 25,720 |
| 2015 | 41.4 | 25,803 |
| 2014 | 40.9 | 25,895 |
| 2013 | 40.4 | 25,971 |
| 2012 | 40.4 | 26,044 |
| 2011 | 39.9 | 26,089 |
| 2010 | 40.0 | 26,098 |
Benton County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 17.3% |
| 18–24 | 7.1% |
| 25–34 | 10.6% |
| 35–54 | 24.4% |
| 55–64 | 15.3% |
| 65+ | 19.8% |
Dependency Ratios for Benton County, Iowa
- Total Dependency Ratio:
- 74.4
- Youth Dependency:
- 39.9
- Old-Age Dependency:
- 34.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Benton County, Iowa
The median age in Benton County, Iowa is 43.1 years.
According to latest Census data, the total population of Benton County, Iowa is 25,724.
In Benton County, Iowa, seniors (ages 65+) make up 19.8% of the population, while children under 18 represent 17.3%.
Based on historical data since 2010, the population in Benton County, Iowa is aging.