Iroquois County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Iroquois County, Illinois
Iroquois County, Illinois Age & Gender Statistics (2024)
Total Population
26,449
Median Age
44.4
Male Median
43.0
Female Median
45.5
Iroquois County, Illinois Population Growth

Iroquois County, Illinois Demographic Trend
Since 2010, the population of has changed by -12.0%%.
-12.0%% Growth
Iroquois County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Iroquois County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.4 | 26,449 |
| 2023 | 44.4 | 26,746 |
| 2022 | 44.5 | 27,043 |
| 2021 | 44.2 | 27,362 |
| 2020 | 44.5 | 27,437 |
| 2019 | 44.4 | 27,812 |
| 2018 | 44.5 | 28,169 |
| 2017 | 44.3 | 28,457 |
| 2016 | 44.3 | 28,814 |
| 2015 | 44.1 | 29,053 |
| 2014 | 43.7 | 29,272 |
| 2013 | 43.4 | 29,446 |
| 2012 | 43.2 | 29,689 |
| 2011 | 43.0 | 29,901 |
| 2010 | 42.7 | 30,068 |
Iroquois County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.5% |
| 5–17 | 16.0% |
| 18–24 | 7.7% |
| 25–34 | 10.2% |
| 35–54 | 23.1% |
| 55–64 | 14.8% |
| 65+ | 22.6% |
Dependency Ratios for Iroquois County, Illinois
- Total Dependency Ratio:
- 79.1
- Youth Dependency:
- 38.6
- Old-Age Dependency:
- 40.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Iroquois County, Illinois
The median age in Iroquois County, Illinois is 44.4 years.
According to latest Census data, the total population of Iroquois County, Illinois is 26,449.
In Iroquois County, Illinois, seniors (ages 65+) make up 22.6% of the population, while children under 18 represent 16.0%.
Based on historical data since 2010, the population in Iroquois County, Illinois is aging.