Richland County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Richland County, Illinois
Richland County, Illinois Age & Gender Statistics (2024)
Total Population
15,598
Median Age
42.3
Male Median
41.9
Female Median
43.1
Richland County, Illinois Population Growth

Richland County, Illinois Demographic Trend
Since 2010, the population of has changed by -3.5%%.
-3.5%% Growth
Richland County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Richland County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.3 | 15,598 |
| 2023 | 42.5 | 15,675 |
| 2022 | 42.2 | 15,716 |
| 2021 | 42.3 | 15,876 |
| 2020 | 42.5 | 15,677 |
| 2019 | 42.0 | 15,766 |
| 2018 | 41.9 | 15,881 |
| 2017 | 42.3 | 15,953 |
| 2016 | 42.1 | 16,072 |
| 2015 | 42.4 | 16,127 |
| 2014 | 42.8 | 16,144 |
| 2013 | 43.1 | 16,213 |
| 2012 | 43.6 | 16,181 |
| 2011 | 42.9 | 16,180 |
| 2010 | 42.4 | 16,166 |
Richland County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.7% |
| 5–17 | 17.3% |
| 18–24 | 7.1% |
| 25–34 | 11.7% |
| 35–54 | 23.5% |
| 55–64 | 14.1% |
| 65+ | 20.7% |
Dependency Ratios for Richland County, Illinois
- Total Dependency Ratio:
- 77.7
- Youth Dependency:
- 40.8
- Old-Age Dependency:
- 36.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Richland County, Illinois
The median age in Richland County, Illinois is 42.3 years.
According to latest Census data, the total population of Richland County, Illinois is 15,598.
In Richland County, Illinois, seniors (ages 65+) make up 20.7% of the population, while children under 18 represent 17.3%.
Based on historical data since 2010, the population in Richland County, Illinois has remained stable.