Piatt County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Piatt County, Illinois
Piatt County, Illinois Age & Gender Statistics (2024)
Total Population
16,695
Median Age
42.8
Male Median
41.7
Female Median
44.6
Piatt County, Illinois Population Growth
Piatt County, Illinois Demographic Trend
Since 2010, the population of has changed by -0.1%%.
-0.1%% Growth
Piatt County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Piatt County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.8 | 16,695 |
| 2023 | 42.5 | 16,702 |
| 2022 | 41.8 | 16,698 |
| 2021 | 41.9 | 16,664 |
| 2020 | 42.1 | 16,412 |
| 2019 | 42.9 | 16,401 |
| 2018 | 43.0 | 16,427 |
| 2017 | 43.0 | 16,433 |
| 2016 | 43.3 | 16,469 |
| 2015 | 43.3 | 16,495 |
| 2014 | 43.0 | 16,552 |
| 2013 | 42.9 | 16,620 |
| 2012 | 42.8 | 16,679 |
| 2011 | 42.5 | 16,710 |
| 2010 | 42.4 | 16,708 |
Piatt County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.9% |
| 5–17 | 16.7% |
| 18–24 | 6.6% |
| 25–34 | 11.2% |
| 35–54 | 25.1% |
| 55–64 | 14.3% |
| 65+ | 21.1% |
Dependency Ratios for Piatt County, Illinois
- Total Dependency Ratio:
- 74.7
- Youth Dependency:
- 37.7
- Old-Age Dependency:
- 36.9
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Piatt County, Illinois
The median age in Piatt County, Illinois is 42.8 years.
According to latest Census data, the total population of Piatt County, Illinois is 16,695.
In Piatt County, Illinois, seniors (ages 65+) make up 21.1% of the population, while children under 18 represent 16.7%.
Based on historical data since 2010, the population in Piatt County, Illinois has remained stable.