St. Louis city, Missouri Age & Gender Distribution (2024)
Population distribution by age and gender for St. Louis city, Missouri
St. Louis city, Missouri Age & Gender Statistics (2024)
Total Population
288,512
Median Age
36.8
Male Median
36.3
Female Median
37.3
St. Louis city, Missouri Population Growth

St. Louis city, Missouri Demographic Trend
Since 2010, the population of has changed by -9.5%%.
-9.5%% Growth
St. Louis city, Missouri Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
St. Louis city, Missouri Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 36.8 | 288,512 |
| 2023 | 36.6 | 293,109 |
| 2022 | 36.5 | 298,018 |
| 2021 | 36.3 | 302,787 |
| 2020 | 36.0 | 304,709 |
| 2019 | 35.8 | 308,174 |
| 2018 | 35.5 | 311,273 |
| 2017 | 35.2 | 314,867 |
| 2016 | 34.8 | 316,030 |
| 2015 | 34.6 | 317,850 |
| 2014 | 34.4 | 318,727 |
| 2013 | 34.2 | 318,955 |
| 2012 | 34.0 | 318,527 |
| 2011 | 33.9 | 318,367 |
| 2010 | 34.0 | 318,809 |
St. Louis city, Missouri Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.7% |
| 5–17 | 12.6% |
| 18–24 | 8.7% |
| 25–34 | 19.7% |
| 35–54 | 25.6% |
| 55–64 | 12.3% |
| 65+ | 15.5% |
Dependency Ratios for St. Louis city, Missouri
- Total Dependency Ratio:
- 51.1
- Youth Dependency:
- 27.7
- Old-Age Dependency:
- 23.4
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for St. Louis city, Missouri
The median age in St. Louis city, Missouri is 36.8 years.
According to latest Census data, the total population of St. Louis city, Missouri is 288,512.
In St. Louis city, Missouri, seniors (ages 65+) make up 15.5% of the population, while children under 18 represent 12.6%.
Based on historical data since 2010, the population in St. Louis city, Missouri is aging.