Chester County, Pennsylvania Age & Gender Distribution (2024)
Population distribution by age and gender for Chester County, Pennsylvania
Chester County, Pennsylvania Age & Gender Statistics (2024)
Total Population
547,840
Median Age
40.8
Male Median
40.0
Female Median
41.6
Chester County, Pennsylvania Population Growth

Chester County, Pennsylvania Demographic Trend
Since 2010, the population of has changed by +11.7%%.
+11.7%% Growth
Chester County, Pennsylvania Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Chester County, Pennsylvania Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 40.8 | 547,840 |
| 2023 | 40.7 | 540,896 |
| 2022 | 40.7 | 536,474 |
| 2021 | 40.6 | 531,704 |
| 2020 | 40.6 | 521,980 |
| 2019 | 40.4 | 519,560 |
| 2018 | 40.4 | 517,156 |
| 2017 | 40.3 | 514,652 |
| 2016 | 40.3 | 512,028 |
| 2015 | 40.1 | 509,797 |
| 2014 | 39.9 | 506,422 |
| 2013 | 39.7 | 503,075 |
| 2012 | 39.4 | 499,548 |
| 2011 | 39.0 | 495,651 |
| 2010 | 38.8 | 490,571 |
Chester County, Pennsylvania Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.3% |
| 5–17 | 16.7% |
| 18–24 | 9.2% |
| 25–34 | 11.5% |
| 35–54 | 25.9% |
| 55–64 | 13.7% |
| 65+ | 17.7% |
Dependency Ratios for Chester County, Pennsylvania
- Total Dependency Ratio:
- 65.9
- Youth Dependency:
- 36.5
- Old-Age Dependency:
- 29.4
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Chester County, Pennsylvania
The median age in Chester County, Pennsylvania is 40.8 years.
According to latest Census data, the total population of Chester County, Pennsylvania is 547,840.
In Chester County, Pennsylvania, seniors (ages 65+) make up 17.7% of the population, while children under 18 represent 16.7%.
Based on historical data since 2010, the population in Chester County, Pennsylvania is aging.