Lancaster County, Pennsylvania Age & Gender Distribution (2024)
Population distribution by age and gender for Lancaster County, Pennsylvania
Lancaster County, Pennsylvania Age & Gender Statistics (2024)
Total Population
557,931
Median Age
39.4
Male Median
38.2
Female Median
40.7
Lancaster County, Pennsylvania Population Growth

Lancaster County, Pennsylvania Demographic Trend
Since 2010, the population of has changed by +9.1%%.
+9.1%% Growth
Lancaster County, Pennsylvania Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Lancaster County, Pennsylvania Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.4 | 557,931 |
| 2023 | 39.1 | 555,151 |
| 2022 | 39.0 | 553,202 |
| 2021 | 38.7 | 550,480 |
| 2020 | 38.7 | 543,050 |
| 2019 | 38.6 | 540,999 |
| 2018 | 38.6 | 538,347 |
| 2017 | 38.5 | 536,494 |
| 2016 | 38.5 | 533,110 |
| 2015 | 38.4 | 530,216 |
| 2014 | 38.3 | 526,839 |
| 2013 | 38.2 | 523,306 |
| 2012 | 38.0 | 519,913 |
| 2011 | 37.9 | 515,817 |
| 2010 | 37.7 | 511,250 |
Lancaster County, Pennsylvania Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 6.2% |
| 5–17 | 16.9% |
| 18–24 | 8.8% |
| 25–34 | 12.9% |
| 35–54 | 23.0% |
| 55–64 | 12.6% |
| 65+ | 19.6% |
Dependency Ratios for Lancaster County, Pennsylvania
- Total Dependency Ratio:
- 74.6
- Youth Dependency:
- 40.4
- Old-Age Dependency:
- 34.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Lancaster County, Pennsylvania
The median age in Lancaster County, Pennsylvania is 39.4 years.
According to latest Census data, the total population of Lancaster County, Pennsylvania is 557,931.
In Lancaster County, Pennsylvania, seniors (ages 65+) make up 19.6% of the population, while children under 18 represent 16.9%.
Based on historical data since 2010, the population in Lancaster County, Pennsylvania is aging.