Union County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Union County, Illinois
Union County, Illinois Age & Gender Statistics (2024)
Total Population
16,997
Median Age
44.3
Male Median
43.5
Female Median
44.9
Union County, Illinois Population Growth

Union County, Illinois Demographic Trend
Since 2010, the population of has changed by -5.4%%.
-5.4%% Growth
Union County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Union County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.3 | 16,997 |
| 2023 | 44.3 | 16,972 |
| 2022 | 44.7 | 17,122 |
| 2021 | 43.8 | 17,259 |
| 2020 | 43.8 | 16,829 |
| 2019 | 43.7 | 16,968 |
| 2018 | 43.7 | 17,127 |
| 2017 | 43.5 | 17,267 |
| 2016 | 43.7 | 17,458 |
| 2015 | 43.6 | 17,551 |
| 2014 | 43.5 | 17,620 |
| 2013 | 43.2 | 17,722 |
| 2012 | 43.3 | 17,799 |
| 2011 | 43.2 | 17,883 |
| 2010 | 43.0 | 17,959 |
Union County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 16.1% |
| 18–24 | 6.9% |
| 25–34 | 10.9% |
| 35–54 | 24.1% |
| 55–64 | 13.8% |
| 65+ | 22.9% |
Dependency Ratios for Union County, Illinois
- Total Dependency Ratio:
- 79.3
- Youth Dependency:
- 38.1
- Old-Age Dependency:
- 41.1
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Union County, Illinois
The median age in Union County, Illinois is 44.3 years.
According to latest Census data, the total population of Union County, Illinois is 16,997.
In Union County, Illinois, seniors (ages 65+) make up 22.9% of the population, while children under 18 represent 16.1%.
Based on historical data since 2010, the population in Union County, Illinois has remained stable.