Effingham County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Effingham County, Illinois
Effingham County, Illinois Age & Gender Statistics (2024)
Total Population
34,522
Median Age
40.0
Male Median
39.4
Female Median
40.7
Effingham County, Illinois Population Growth

Effingham County, Illinois Demographic Trend
Since 2010, the population of has changed by +0.8%%.
+0.8%% Growth
Effingham County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Effingham County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 40.0 | 34,522 |
| 2023 | 39.5 | 34,505 |
| 2022 | 39.3 | 34,594 |
| 2021 | 39.2 | 34,576 |
| 2020 | 39.5 | 34,151 |
| 2019 | 39.4 | 34,137 |
| 2018 | 39.1 | 34,174 |
| 2017 | 39.1 | 34,164 |
| 2016 | 39.2 | 34,356 |
| 2015 | 38.9 | 34,332 |
| 2014 | 39.2 | 34,280 |
| 2013 | 39.6 | 34,274 |
| 2012 | 39.5 | 34,258 |
| 2011 | 39.0 | 34,229 |
| 2010 | 38.7 | 34,232 |
Effingham County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.2% |
| 5–17 | 17.7% |
| 18–24 | 7.0% |
| 25–34 | 12.6% |
| 35–54 | 23.7% |
| 55–64 | 13.9% |
| 65+ | 18.8% |
Dependency Ratios for Effingham County, Illinois
- Total Dependency Ratio:
- 74.7
- Youth Dependency:
- 41.8
- Old-Age Dependency:
- 32.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Effingham County, Illinois
The median age in Effingham County, Illinois is 40.0 years.
According to latest Census data, the total population of Effingham County, Illinois is 34,522.
In Effingham County, Illinois, seniors (ages 65+) make up 18.8% of the population, while children under 18 represent 17.7%.
Based on historical data since 2010, the population in Effingham County, Illinois has remained stable.