Whiteside County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Whiteside County, Illinois
Whiteside County, Illinois Age & Gender Statistics (2024)
Total Population
54,947
Median Age
43.0
Male Median
41.5
Female Median
44.5
Whiteside County, Illinois Population Growth

Whiteside County, Illinois Demographic Trend
Since 2010, the population of has changed by -6.5%%.
-6.5%% Growth
Whiteside County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Whiteside County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 43.0 | 54,947 |
| 2023 | 43.4 | 55,192 |
| 2022 | 43.5 | 55,569 |
| 2021 | 43.6 | 55,932 |
| 2020 | 43.6 | 55,583 |
| 2019 | 43.4 | 56,016 |
| 2018 | 43.2 | 56,396 |
| 2017 | 42.9 | 56,823 |
| 2016 | 42.8 | 57,155 |
| 2015 | 42.7 | 57,525 |
| 2014 | 42.4 | 57,680 |
| 2013 | 42.1 | 58,150 |
| 2012 | 42.0 | 58,400 |
| 2011 | 41.6 | 58,622 |
| 2010 | 41.2 | 58,750 |
Whiteside County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.5% |
| 5–17 | 16.5% |
| 18–24 | 7.7% |
| 25–34 | 11.2% |
| 35–54 | 23.4% |
| 55–64 | 14.1% |
| 65+ | 21.8% |
Dependency Ratios for Whiteside County, Illinois
- Total Dependency Ratio:
- 77.7
- Youth Dependency:
- 39.0
- Old-Age Dependency:
- 38.7
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Whiteside County, Illinois
The median age in Whiteside County, Illinois is 43.0 years.
According to latest Census data, the total population of Whiteside County, Illinois is 54,947.
In Whiteside County, Illinois, seniors (ages 65+) make up 21.8% of the population, while children under 18 represent 16.5%.
Based on historical data since 2010, the population in Whiteside County, Illinois is aging.