Boone County, Iowa Age & Gender Distribution (2024)
Population distribution by age and gender for Boone County, Iowa
Boone County, Iowa Age & Gender Statistics (2024)
Total Population
26,668
Median Age
42.4
Male Median
41.0
Female Median
43.8
Boone County, Iowa Population Growth

Boone County, Iowa Demographic Trend
Since 2010, the population of has changed by +0.9%%.
+0.9%% Growth
Boone County, Iowa Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Boone County, Iowa Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.4 | 26,668 |
| 2023 | 42.2 | 26,669 |
| 2022 | 42.0 | 26,700 |
| 2021 | 42.2 | 26,721 |
| 2020 | 42.1 | 26,381 |
| 2019 | 41.8 | 26,370 |
| 2018 | 41.8 | 26,399 |
| 2017 | 41.4 | 26,381 |
| 2016 | 41.1 | 26,411 |
| 2015 | 41.3 | 26,401 |
| 2014 | 41.1 | 26,326 |
| 2013 | 40.7 | 26,310 |
| 2012 | 40.9 | 26,324 |
| 2011 | 40.8 | 26,380 |
| 2010 | 40.2 | 26,424 |
Boone County, Iowa Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.3% |
| 5–17 | 15.8% |
| 18–24 | 7.3% |
| 25–34 | 12.1% |
| 35–54 | 25.3% |
| 55–64 | 14.3% |
| 65+ | 20.0% |
Dependency Ratios for Boone County, Iowa
- Total Dependency Ratio:
- 69.5
- Youth Dependency:
- 35.7
- Old-Age Dependency:
- 33.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Boone County, Iowa
The median age in Boone County, Iowa is 42.4 years.
According to latest Census data, the total population of Boone County, Iowa is 26,668.
In Boone County, Iowa, seniors (ages 65+) make up 20.0% of the population, while children under 18 represent 15.8%.
Based on historical data since 2010, the population in Boone County, Iowa is aging.