Jo Daviess County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Jo Daviess County, Illinois
Jo Daviess County, Illinois Age & Gender Statistics (2024)
Total Population
21,851
Median Age
51.5
Male Median
49.7
Female Median
52.9
Jo Daviess County, Illinois Population Growth

Jo Daviess County, Illinois Demographic Trend
Since 2010, the population of has changed by -3.9%%.
-3.9%% Growth
Jo Daviess County, Illinois Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Jo Daviess County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 51.5 | 21,851 |
| 2023 | 50.9 | 21,918 |
| 2022 | 50.8 | 21,942 |
| 2021 | 50.5 | 21,995 |
| 2020 | 50.4 | 21,429 |
| 2019 | 49.9 | 21,588 |
| 2018 | 49.7 | 21,834 |
| 2017 | 49.4 | 22,046 |
| 2016 | 48.6 | 22,186 |
| 2015 | 48.2 | 22,397 |
| 2014 | 48.2 | 22,427 |
| 2013 | 47.4 | 22,602 |
| 2012 | 47.2 | 22,663 |
| 2011 | 46.9 | 22,709 |
| 2010 | 46.6 | 22,728 |
Jo Daviess County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.0% |
| 5–17 | 14.2% |
| 18–24 | 5.8% |
| 25–34 | 8.9% |
| 35–54 | 21.6% |
| 55–64 | 15.6% |
| 65+ | 29.9% |
Dependency Ratios for Jo Daviess County, Illinois
- Total Dependency Ratio:
- 92.7
- Youth Dependency:
- 35.0
- Old-Age Dependency:
- 57.7
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Jo Daviess County, Illinois
The median age in Jo Daviess County, Illinois is 51.5 years.
According to latest Census data, the total population of Jo Daviess County, Illinois is 21,851.
In Jo Daviess County, Illinois, seniors (ages 65+) make up 29.9% of the population, while children under 18 represent 14.2%.
Based on historical data since 2010, the population in Jo Daviess County, Illinois is aging.