Grundy County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Grundy County, Illinois
Grundy County, Illinois Age & Gender Statistics (2024)
Total Population
53,219
Median Age
38.3
Male Median
37.1
Female Median
39.5
Grundy County, Illinois Population Growth
Grundy County, Illinois Demographic Trend
Since 2010, the population of has changed by +9.2%%.
+9.2%% Growth
Grundy County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Grundy County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.3 | 53,219 |
| 2023 | 38.6 | 52,920 |
| 2022 | 38.8 | 52,624 |
| 2021 | 38.3 | 52,364 |
| 2020 | 38.1 | 50,798 |
| 2019 | 37.9 | 50,666 |
| 2018 | 37.6 | 50,509 |
| 2017 | 37.5 | 50,333 |
| 2016 | 37.2 | 50,338 |
| 2015 | 37.2 | 50,277 |
| 2014 | 36.8 | 50,173 |
| 2013 | 36.7 | 50,064 |
| 2012 | 36.4 | 49,870 |
| 2011 | 36.4 | 49,460 |
| 2010 | 36.2 | 48,744 |
Grundy County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.7% |
| 5–17 | 18.7% |
| 18–24 | 8.8% |
| 25–34 | 12.8% |
| 35–54 | 26.2% |
| 55–64 | 12.8% |
| 65+ | 15.1% |
Dependency Ratios for Grundy County, Illinois
- Total Dependency Ratio:
- 65.0
- Youth Dependency:
- 40.1
- Old-Age Dependency:
- 24.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Grundy County, Illinois
The median age in Grundy County, Illinois is 38.3 years.
According to latest Census data, the total population of Grundy County, Illinois is 53,219.
In Grundy County, Illinois, seniors (ages 65+) make up 15.1% of the population, while children under 18 represent 18.7%.
Based on historical data since 2010, the population in Grundy County, Illinois is aging.