Clark County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Clark County, Illinois
Clark County, Illinois Age & Gender Statistics (2024)
Total Population
15,266
Median Age
42.6
Male Median
40.8
Female Median
43.8
Clark County, Illinois Population Growth

Clark County, Illinois Demographic Trend
Since 2010, the population of has changed by -7.7%%.
-7.7%% Growth
Clark County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Clark County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.6 | 15,266 |
| 2023 | 42.0 | 15,328 |
| 2022 | 41.4 | 15,467 |
| 2021 | 41.8 | 15,587 |
| 2020 | 41.9 | 15,602 |
| 2019 | 42.3 | 15,716 |
| 2018 | 43.0 | 15,836 |
| 2017 | 43.0 | 15,924 |
| 2016 | 43.1 | 16,089 |
| 2015 | 43.4 | 16,159 |
| 2014 | 43.3 | 16,240 |
| 2013 | 43.1 | 16,284 |
| 2012 | 42.8 | 16,353 |
| 2011 | 42.2 | 16,442 |
| 2010 | 41.6 | 16,545 |
Clark County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 16.7% |
| 18–24 | 7.1% |
| 25–34 | 11.3% |
| 35–54 | 24.3% |
| 55–64 | 14.8% |
| 65+ | 20.3% |
Dependency Ratios for Clark County, Illinois
- Total Dependency Ratio:
- 74.3
- Youth Dependency:
- 39.0
- Old-Age Dependency:
- 35.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Clark County, Illinois
The median age in Clark County, Illinois is 42.6 years.
According to latest Census data, the total population of Clark County, Illinois is 15,266.
In Clark County, Illinois, seniors (ages 65+) make up 20.3% of the population, while children under 18 represent 16.7%.
Based on historical data since 2010, the population in Clark County, Illinois has remained stable.