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

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Chester County, Pennsylvania Demographic Trend

Since 2010, the population of has changed by +11.7%%.

+11.7%% Growth

Chester County, Pennsylvania Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Chester County, Pennsylvania Historical Population Data

YearMedian AgePopulation
202440.8547,840
202340.7540,896
202240.7536,474
202140.6531,704
202040.6521,980
201940.4519,560
201840.4517,156
201740.3514,652
201640.3512,028
201540.1509,797
201439.9506,422
201339.7503,075
201239.4499,548
201139.0495,651
201038.8490,571

Chester County, Pennsylvania Age Group Breakdown (2024)

Age CohortPercentage
Under 55.3%
5–1716.7%
18–249.2%
25–3411.5%
35–5425.9%
55–6413.7%
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.
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