Dauphin County, Pennsylvania Age & Gender Distribution (2024)
Population distribution by age and gender for Dauphin County, Pennsylvania
Dauphin County, Pennsylvania Age & Gender Statistics (2024)
Total Population
289,593
Median Age
39.4
Male Median
38.0
Female Median
40.4
Dauphin County, Pennsylvania Population Growth

Dauphin County, Pennsylvania Demographic Trend
Since 2010, the population of has changed by +9.4%%.
+9.4%% Growth
Dauphin County, Pennsylvania Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Dauphin County, Pennsylvania Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.4 | 289,593 |
| 2023 | 39.4 | 287,484 |
| 2022 | 39.4 | 286,108 |
| 2021 | 39.5 | 284,199 |
| 2020 | 39.6 | 277,071 |
| 2019 | 39.7 | 275,632 |
| 2018 | 39.8 | 274,515 |
| 2017 | 39.6 | 273,329 |
| 2016 | 39.6 | 271,962 |
| 2015 | 39.6 | 271,094 |
| 2014 | 39.4 | 269,946 |
| 2013 | 39.3 | 269,035 |
| 2012 | 39.2 | 267,891 |
| 2011 | 39.1 | 266,576 |
| 2010 | 39.1 | 264,823 |
Dauphin County, Pennsylvania Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.9% |
| 5–17 | 16.5% |
| 18–24 | 8.2% |
| 25–34 | 13.8% |
| 35–54 | 24.7% |
| 55–64 | 13.0% |
| 65+ | 18.0% |
Dependency Ratios for Dauphin County, Pennsylvania
- Total Dependency Ratio:
- 67.7
- Youth Dependency:
- 37.5
- Old-Age Dependency:
- 30.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Dauphin County, Pennsylvania
The median age in Dauphin County, Pennsylvania is 39.4 years.
According to latest Census data, the total population of Dauphin County, Pennsylvania is 289,593.
In Dauphin County, Pennsylvania, seniors (ages 65+) make up 18.0% of the population, while children under 18 represent 16.5%.
Based on historical data since 2010, the population in Dauphin County, Pennsylvania has remained stable.