Peoria County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Peoria County, Illinois
Peoria County, Illinois Age & Gender Statistics (2024)
Total Population
179,645
Median Age
38.1
Male Median
37.1
Female Median
39.3
Peoria County, Illinois Population Growth
Peoria County, Illinois Demographic Trend
Since 2010, the population of has changed by -3.0%%.
-3.0%% Growth
Peoria County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Peoria County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.1 | 179,645 |
| 2023 | 38.1 | 179,831 |
| 2022 | 38.1 | 181,186 |
| 2021 | 37.8 | 182,439 |
| 2020 | 37.6 | 181,111 |
| 2019 | 37.5 | 182,770 |
| 2018 | 37.2 | 184,463 |
| 2017 | 37.0 | 186,145 |
| 2016 | 36.9 | 186,818 |
| 2015 | 36.8 | 187,112 |
| 2014 | 36.8 | 187,197 |
| 2013 | 36.7 | 187,117 |
| 2012 | 36.7 | 186,399 |
| 2011 | 36.5 | 185,780 |
| 2010 | 36.5 | 185,108 |
Peoria County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.5% |
| 5–17 | 17.4% |
| 18–24 | 8.8% |
| 25–34 | 13.2% |
| 35–54 | 24.0% |
| 55–64 | 11.9% |
| 65+ | 18.3% |
Dependency Ratios for Peoria County, Illinois
- Total Dependency Ratio:
- 73.0
- Youth Dependency:
- 41.4
- Old-Age Dependency:
- 31.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Peoria County, Illinois
The median age in Peoria County, Illinois is 38.1 years.
According to latest Census data, the total population of Peoria County, Illinois is 179,645.
In Peoria County, Illinois, seniors (ages 65+) make up 18.3% of the population, while children under 18 represent 17.4%.
Based on historical data since 2010, the population in Peoria County, Illinois is aging.