Delaware County, Pennsylvania Age & Gender Distribution (2024)
Population distribution by age and gender for Delaware County, Pennsylvania
Delaware County, Pennsylvania Age & Gender Statistics (2024)
Total Population
579,222
Median Age
39.1
Male Median
37.9
Female Median
40.2
Delaware County, Pennsylvania Population Growth

Delaware County, Pennsylvania Demographic Trend
Since 2010, the population of has changed by +4.1%%.
+4.1%% Growth
Delaware County, Pennsylvania Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Delaware County, Pennsylvania Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.1 | 579,222 |
| 2023 | 39.0 | 576,195 |
| 2022 | 39.0 | 575,312 |
| 2021 | 39.0 | 573,883 |
| 2020 | 38.9 | 565,328 |
| 2019 | 39.0 | 564,554 |
| 2018 | 39.0 | 563,527 |
| 2017 | 39.0 | 563,384 |
| 2016 | 39.0 | 562,316 |
| 2015 | 38.9 | 561,683 |
| 2014 | 38.9 | 560,775 |
| 2013 | 38.8 | 559,771 |
| 2012 | 38.8 | 558,874 |
| 2011 | 38.7 | 557,648 |
| 2010 | 38.5 | 556,468 |
Delaware County, Pennsylvania Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.7% |
| 5–17 | 16.3% |
| 18–24 | 9.8% |
| 25–34 | 12.6% |
| 35–54 | 24.9% |
| 55–64 | 13.2% |
| 65+ | 17.4% |
Dependency Ratios for Delaware County, Pennsylvania
- Total Dependency Ratio:
- 65.2
- Youth Dependency:
- 36.4
- Old-Age Dependency:
- 28.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Delaware County, Pennsylvania
The median age in Delaware County, Pennsylvania is 39.1 years.
According to latest Census data, the total population of Delaware County, Pennsylvania is 579,222.
In Delaware County, Pennsylvania, seniors (ages 65+) make up 17.4% of the population, while children under 18 represent 16.3%.
Based on historical data since 2010, the population in Delaware County, Pennsylvania has remained stable.