Mercer County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Mercer County, Illinois
Mercer County, Illinois Age & Gender Statistics (2024)
Total Population
15,495
Median Age
44.7
Male Median
44.2
Female Median
45.1
Mercer County, Illinois Population Growth
Mercer County, Illinois Demographic Trend
Since 2010, the population of has changed by -6.4%%.
-6.4%% Growth
Mercer County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Mercer County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.7 | 15,495 |
| 2023 | 44.5 | 15,619 |
| 2022 | 44.7 | 15,692 |
| 2021 | 44.6 | 15,779 |
| 2020 | 44.8 | 15,503 |
| 2019 | 44.9 | 15,589 |
| 2018 | 44.8 | 15,693 |
| 2017 | 44.8 | 15,794 |
| 2016 | 44.8 | 15,971 |
| 2015 | 44.3 | 16,107 |
| 2014 | 44.3 | 16,204 |
| 2013 | 44.0 | 16,325 |
| 2012 | 43.7 | 16,421 |
| 2011 | 43.5 | 16,497 |
| 2010 | 43.0 | 16,551 |
Mercer County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.8% |
| 5–17 | 16.1% |
| 18–24 | 7.4% |
| 25–34 | 10.3% |
| 35–54 | 24.8% |
| 55–64 | 14.8% |
| 65+ | 21.9% |
Dependency Ratios for Mercer County, Illinois
- Total Dependency Ratio:
- 74.6
- Youth Dependency:
- 36.4
- Old-Age Dependency:
- 38.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Mercer County, Illinois
The median age in Mercer County, Illinois is 44.7 years.
According to latest Census data, the total population of Mercer County, Illinois is 15,495.
In Mercer County, Illinois, seniors (ages 65+) make up 21.9% of the population, while children under 18 represent 16.1%.
Based on historical data since 2010, the population in Mercer County, Illinois is aging.