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Population and Demography of Pennsylvania

Pennsylvania is a landlocked state in the Northeastern region of the United States & is bordered by Delaware to the southeast, Maryland to the south, West Virginia to the southwest, Ohio to the west, Lake Erie, and the Canadian province of Ontario to the northwest, New York to the north, and New Jersey to the east. 

Pennsylvania is the 5th most populous state of the United States & currently the 9th most densely populated state in the country with a density of 290 people per square mile and a Land area of  44,816.61 sq mi (116,074 km2). As per the  United States Census Bureau, the population of Pennsylvania in 2020 was 13,002,700 (13 million) 

Population of Pennsylvania in 2024 – 12,961,683 or 13 million 

Decadal Growth (2010-2020)

Pennsylvania has a population growth rate of 2.4% during 2010-2020. It has population increase of 300,321 since 2010.

PennsylvaniaCensus 2020
Total Population13,002,700 (13 million)
Median Age40.6 years
Population Rank5th
Total Land Area44,816.61 sq mi (116,074 km2)
Area Rank33rd
Population Density290/sq mi (112/km2)
Median Age40.6 years

Source: US Census  2020

Pennsylvania Historical Population

Pennsylvania has a population growth rate of 2.4% during 2010-2020.  In the year 1910 population of Pennsylvania was 7.6 million and in 2020 it reached 13 million, an increase of almost 5.4 million.

Let’s look at decade population & percentage change from the Year 1910 to 2020

YearPopulationPercentage Change
1940 9,900,1802.8
Population Projections

There is estimated to be little or even no growth leading up to 2030, in part because Pennsylvania has a low birth rate with an increasingly older population, although migration to the area should remain stable. 

Source: US Census 2020

Demography of Pennsylvania

Religion and affilations

Christianity is the majority religion in Pennsylvania followed by 73% of the population. The largest Christian denomination in Pennsylvania is Protestants followed by Roman Catholics. Next comes the Unaffiliated population, 22% of the population doesn’t follow or adhere to any faith or religion.

Other non-Christian-based religions and faiths are followed by 6% of the population and include Hinduism (1%), Buddhism(1%), Jews (1%), Islam (1%), and other smaller faiths (2%).

For more details read Religion in Pennsylvania

Race and Ethnicity

In 2020, the White alone (non-Hispanic) population was the largest racial or ethnic group in Pennsylvania, comprising 73.47% of the total population. It was followed by the African American population whose share was 10.53%. Hispanic or Latino was the third largest group at 8.07%. Asians were the fourth largest group at 3.90%. Two or more races are at 3.47%.

Ancestry in Pennsylvania

As per Census Studies & estimate German, Irish, Italian, English, and Polish have made the three largest ancestry groups in Pennsylvania. 

88.58% of Pennsylvania residents speak only English, while 11.42% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.99% of the population.

For more Details read Race and Ethnicity in Pennsylvania

Cities and Counties in Pennsylvania

Philadelphia city which has a population of 1.6 million is the most populated and largest city in Pennsylvania. Pittsburgh (304.391),  Allentown (120,207), Erie (99,475), and Reading (87,879) are other big cities in Pennsylvania. 

As of 2022, Pennsylvania is divided into 67 counties. Philadelphia County with a population of  1,580,863 residents is a populated county in Pennsylvania followed by Allegheny County at 1,223,048.

read more about Cities and Counties in Pennsylvania

Pennsylvania Population 2024 | Pennsylvania Demographics