Allegheny County, Pennsylvania Age & Gender Statistics (2024)

Total Population

1,238,177

Median Age

40.6

Male Median

39.2

Female Median

42.1

Allegheny County, Pennsylvania Population Growth

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

Allegheny County, Pennsylvania Demographic Trend

Since 2010, the population of has changed by +1.2%%.

+1.2%% Growth

Allegheny County, Pennsylvania Age & Gender Pyramid

Population pyramid for

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


Allegheny County, Pennsylvania Historical Population Data

YearMedian AgePopulation
202440.61,238,177
202340.61,240,476
202240.61,245,310
202140.71,246,116
202040.81,218,380
201940.81,221,744
201840.81,225,561
201740.91,229,605
201640.81,230,360
201540.91,231,145
201441.01,229,172
201341.11,226,933
201241.21,224,772
201141.21,223,525
201041.11,223,066

Allegheny County, Pennsylvania Age Group Breakdown (2024)

Age CohortPercentage
Under 55.0%
5–1713.6%
18–248.7%
25–3414.7%
35–5424.5%
55–6413.2%
65+20.2%

Dependency Ratios for Allegheny County, Pennsylvania

Total Dependency Ratio:
63.3
Youth Dependency:
30.4
Old-Age Dependency:
33.0

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Allegheny County, Pennsylvania

The median age in Allegheny County, Pennsylvania is 40.6 years.

According to latest Census data, the total population of Allegheny County, Pennsylvania is 1,238,177.

In Allegheny County, Pennsylvania, seniors (ages 65+) make up 20.2% of the population, while children under 18 represent 13.6%.

Based on historical data since 2010, the population in Allegheny County, Pennsylvania has remained stable.
Back to Overview