Cass County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Cass County, Illinois
Cass County, Illinois Age & Gender Statistics (2024)
Total Population
12,784
Median Age
38.3
Male Median
38.2
Female Median
38.5
Cass County, Illinois Population Growth
Cass County, Illinois Demographic Trend
Since 2010, the population of has changed by -6.3%%.
-6.3%% Growth
Cass County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Cass County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.3 | 12,784 |
| 2023 | 38.1 | 12,826 |
| 2022 | 38.8 | 12,955 |
| 2021 | 38.3 | 13,058 |
| 2020 | 39.4 | 12,324 |
| 2019 | 40.0 | 12,493 |
| 2018 | 39.7 | 12,665 |
| 2017 | 40.2 | 12,880 |
| 2016 | 40.1 | 13,068 |
| 2015 | 39.2 | 13,254 |
| 2014 | 39.6 | 13,440 |
| 2013 | 39.1 | 13,530 |
| 2012 | 37.9 | 13,570 |
| 2011 | 37.9 | 13,639 |
| 2010 | 38.7 | 13,648 |
Cass County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.7% |
| 5–17 | 17.7% |
| 18–24 | 7.9% |
| 25–34 | 12.7% |
| 35–54 | 24.1% |
| 55–64 | 12.8% |
| 65+ | 18.0% |
Dependency Ratios for Cass County, Illinois
- Total Dependency Ratio:
- 73.7
- Youth Dependency:
- 42.4
- Old-Age Dependency:
- 31.4
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Cass County, Illinois
The median age in Cass County, Illinois is 38.3 years.
According to latest Census data, the total population of Cass County, Illinois is 12,784.
In Cass County, Illinois, seniors (ages 65+) make up 18.0% of the population, while children under 18 represent 17.7%.
Based on historical data since 2010, the population in Cass County, Illinois has remained stable.