Winnebago County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Winnebago County, Illinois
Winnebago County, Illinois Age & Gender Statistics (2024)
Total Population
283,292
Median Age
39.6
Male Median
38.7
Female Median
40.3
Winnebago County, Illinois Population Growth
Winnebago County, Illinois Demographic Trend
Since 2010, the population of has changed by -3.6%%.
-3.6%% Growth
Winnebago County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Winnebago County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.6 | 283,292 |
| 2023 | 39.7 | 283,289 |
| 2022 | 39.5 | 284,591 |
| 2021 | 39.6 | 285,471 |
| 2020 | 39.8 | 283,635 |
| 2019 | 39.7 | 284,819 |
| 2018 | 39.6 | 286,174 |
| 2017 | 39.6 | 287,512 |
| 2016 | 39.3 | 288,896 |
| 2015 | 39.2 | 290,439 |
| 2014 | 38.9 | 292,026 |
| 2013 | 38.8 | 293,384 |
| 2012 | 38.4 | 294,433 |
| 2011 | 38.2 | 294,893 |
| 2010 | 37.9 | 293,972 |
Winnebago County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.1% |
| 5–17 | 17.4% |
| 18–24 | 8.3% |
| 25–34 | 12.6% |
| 35–54 | 23.9% |
| 55–64 | 13.1% |
| 65+ | 18.5% |
Dependency Ratios for Winnebago County, Illinois
- Total Dependency Ratio:
- 72.5
- Youth Dependency:
- 40.5
- Old-Age Dependency:
- 32.0
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Winnebago County, Illinois
The median age in Winnebago County, Illinois is 39.6 years.
According to latest Census data, the total population of Winnebago County, Illinois is 283,292.
In Winnebago County, Illinois, seniors (ages 65+) make up 18.5% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Winnebago County, Illinois is aging.