Clay County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Clay County, Illinois
Clay County, Illinois Age & Gender Statistics (2024)
Total Population
13,052
Median Age
40.4
Male Median
39.8
Female Median
40.9
Clay County, Illinois Population Growth

Clay County, Illinois Demographic Trend
Since 2010, the population of has changed by -6.3%%.
-6.3%% Growth
Clay County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Clay County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 40.4 | 13,052 |
| 2023 | 41.5 | 13,173 |
| 2022 | 41.8 | 13,248 |
| 2021 | 42.1 | 13,313 |
| 2020 | 42.1 | 13,217 |
| 2019 | 42.6 | 13,287 |
| 2018 | 42.7 | 13,338 |
| 2017 | 44.0 | 13,393 |
| 2016 | 43.1 | 13,466 |
| 2015 | 42.8 | 13,582 |
| 2014 | 42.7 | 13,675 |
| 2013 | 43.2 | 13,744 |
| 2012 | 42.5 | 13,828 |
| 2011 | 42.2 | 13,862 |
| 2010 | 41.6 | 13,927 |
Clay County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.8% |
| 5–17 | 18.0% |
| 18–24 | 7.1% |
| 25–34 | 11.6% |
| 35–54 | 23.1% |
| 55–64 | 13.5% |
| 65+ | 20.9% |
Dependency Ratios for Clay County, Illinois
- Total Dependency Ratio:
- 80.9
- Youth Dependency:
- 43.1
- Old-Age Dependency:
- 37.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Clay County, Illinois
The median age in Clay County, Illinois is 40.4 years.
According to latest Census data, the total population of Clay County, Illinois is 13,052.
In Clay County, Illinois, seniors (ages 65+) make up 20.9% of the population, while children under 18 represent 18.0%.
Based on historical data since 2010, the population in Clay County, Illinois has remained stable.