Allegheny County, Pennsylvania Age & Gender Distribution (2024)
Population distribution by age and gender for Allegheny County, Pennsylvania
Allegheny County, Pennsylvania Age & Gender Statistics (2024)
Total Population
1,238,177
Median Age
40.6
Male Median
39.2
Female Median
42.1
Allegheny County, Pennsylvania Population Growth

Allegheny County, Pennsylvania Demographic Trend
Since 2010, the population of has changed by +1.2%%.
+1.2%% Growth
Allegheny County, Pennsylvania Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Allegheny County, Pennsylvania Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 40.6 | 1,238,177 |
| 2023 | 40.6 | 1,240,476 |
| 2022 | 40.6 | 1,245,310 |
| 2021 | 40.7 | 1,246,116 |
| 2020 | 40.8 | 1,218,380 |
| 2019 | 40.8 | 1,221,744 |
| 2018 | 40.8 | 1,225,561 |
| 2017 | 40.9 | 1,229,605 |
| 2016 | 40.8 | 1,230,360 |
| 2015 | 40.9 | 1,231,145 |
| 2014 | 41.0 | 1,229,172 |
| 2013 | 41.1 | 1,226,933 |
| 2012 | 41.2 | 1,224,772 |
| 2011 | 41.2 | 1,223,525 |
| 2010 | 41.1 | 1,223,066 |
Allegheny County, Pennsylvania Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.0% |
| 5–17 | 13.6% |
| 18–24 | 8.7% |
| 25–34 | 14.7% |
| 35–54 | 24.5% |
| 55–64 | 13.2% |
| 65+ | 20.2% |
Dependency Ratios for Allegheny County, Pennsylvania
- Total Dependency Ratio:
- 63.3
- Youth Dependency:
- 30.4
- Old-Age Dependency:
- 33.0
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Allegheny County, Pennsylvania
The median age in Allegheny County, Pennsylvania is 40.6 years.
According to latest Census data, the total population of Allegheny County, Pennsylvania is 1,238,177.
In Allegheny County, Pennsylvania, seniors (ages 65+) make up 20.2% of the population, while children under 18 represent 13.6%.
Based on historical data since 2010, the population in Allegheny County, Pennsylvania has remained stable.