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

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

Delaware County, Pennsylvania Demographic Trend

Since 2010, the population of has changed by +4.1%%.

+4.1%% Growth

Delaware County, Pennsylvania Age & Gender Pyramid

Population pyramid for

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


Delaware County, Pennsylvania Historical Population Data

YearMedian AgePopulation
202439.1579,222
202339.0576,195
202239.0575,312
202139.0573,883
202038.9565,328
201939.0564,554
201839.0563,527
201739.0563,384
201639.0562,316
201538.9561,683
201438.9560,775
201338.8559,771
201238.8558,874
201138.7557,648
201038.5556,468

Delaware County, Pennsylvania Age Group Breakdown (2024)

Age CohortPercentage
Under 55.7%
5–1716.3%
18–249.8%
25–3412.6%
35–5424.9%
55–6413.2%
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.
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