St. Clair County, Missouri Age & Gender Distribution (2024)
Population distribution by age and gender for St. Clair County, Missouri
St. Clair County, Missouri Age & Gender Statistics (2024)
Total Population
9,587
Median Age
46.1
Male Median
46.3
Female Median
46.0
St. Clair County, Missouri Population Growth
St. Clair County, Missouri Demographic Trend
Since 2010, the population of has changed by -1.7%%.
-1.7%% Growth
St. Clair County, Missouri Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
St. Clair County, Missouri Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 46.1 | 9,587 |
| 2023 | 47.2 | 9,451 |
| 2022 | 48.2 | 9,330 |
| 2021 | 48.7 | 9,235 |
| 2020 | 49.3 | 9,455 |
| 2019 | 50.3 | 9,370 |
| 2018 | 49.9 | 9,383 |
| 2017 | 50.0 | 9,396 |
| 2016 | 49.8 | 9,444 |
| 2015 | 49.7 | 9,520 |
| 2014 | 49.1 | 9,609 |
| 2013 | 49.0 | 9,649 |
| 2012 | 48.6 | 9,693 |
| 2011 | 48.0 | 9,748 |
| 2010 | 47.6 | 9,757 |
St. Clair County, Missouri Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.4% |
| 5–17 | 15.8% |
| 18–24 | 6.2% |
| 25–34 | 9.9% |
| 35–54 | 21.9% |
| 55–64 | 15.1% |
| 65+ | 25.6% |
Dependency Ratios for St. Clair County, Missouri
- Total Dependency Ratio:
- 88.3
- Youth Dependency:
- 40.0
- Old-Age Dependency:
- 48.3
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for St. Clair County, Missouri
The median age in St. Clair County, Missouri is 46.1 years.
According to latest Census data, the total population of St. Clair County, Missouri is 9,587.
In St. Clair County, Missouri, seniors (ages 65+) make up 25.6% of the population, while children under 18 represent 15.8%.
Based on historical data since 2010, the population in St. Clair County, Missouri has remained stable.