Allegheny County, PA Population

Overview

1.25 million

Total Population

40.7

Median age

51.33%

Female population %

94.8:100

Gender ratio (M:F)

30-34 years

Largest age group

52.8

Total dependency ratio

White

Largest racial group

28,312

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Allegheny County's population is old compared to the rest of the country:

The median age in Allegheny County is 40.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Allegheny County's population under 18 was 18.90%, compared to the 22.51% nationwide.
Allegheny County's elderly or the senior population (over 65 age) was 18.89% as compared to 16.04% nationwide.
Of the total population in Allegheny County, 15.65% were under the age of 15, 19.33% aged 15 to 29, 46.13% aged 30 to 64, 16.09% aged 65 to 84, and 2.80% were 85 years of age and older.

There are 33,034 more females than males in Allegheny County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.33% females and 48.67% males in Allegheny County, PA.
The Allegheny County, PA gender ratio is 94.8:100 i.e. 94.8 men to 100 women (0.948).
For male population, the largest age group is 30-34 years with a population of 48,671.
For the female population, the largest age group is 60-64 years with a population of 47,197.

Allegheny County's population has become increasingly diverse:

Racial distribution of Allegheny County population: 78.43% are White, 12.68% are Black or African American, 0.11% are American Indian and Alaska Native, 3.94% are Asian, 0.03% are Native Hawaiian and other Pacific Islander, 0.80% are some other race and 4.02% are multiracial.
Allegheny County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 28,312 is Hispanic or Latino (of any race), and 1.22 million (97.73% of the total population) is Non-Hispanic.
The largest racial group in Allegheny County is White with a population of 977,296 (78.43% of the total population).

Allegheny County's population has already reached its peak and is showing a trend of decline:

The peak population was 1,280,060 in the year 2000
From 2000 to 2010, Allegheny County's population decreased by 56,087 (4.38%), as compared to the national growth of 9.63%.
From 2010 to 2020, Allegheny County's population increased by 25,551 (2.09%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Allegheny County's population was lowest in year 2019 at 1,215,716.