Share of the population by age and sex, five-year groups

Population of Pennsylvania, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2020  +1 +5

12,995,576 people lived in Pennsylvania on July 1, 2020: the 5th-largest population among the 50 states and the District of Columbia. The median age was 41.0 years (United States: 38.7); more residents are 65 or older (19.1%) than under 15 (16.9%): an ageing, top-heavy pyramid. There were 95.9 men for every 100 women. Since 2010 the population has grown by 2.2%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2020
Population
12,995,576
Rank by population
5th of 51
Median age
41.0
Men per 100 women
95.9
Under 15
16.9%
15–64
64.0%
65 and over
19.1%
Child dependency
26.3
Old-age dependency
29.9
Change since 2010
+2.2%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2020
AgeMenWomenTotalShare
0-4350,994334,886685,8805.3%
5-9373,220355,723728,9435.6%
10-14397,426377,554774,9806.0%
15-19416,184405,017821,2016.3%
20-24431,513425,274856,7876.6%
25-29413,873408,535822,4086.3%
30-34423,693424,350848,0436.5%
35-39400,785402,714803,4996.2%
40-44368,000373,171741,1715.7%
45-49373,717379,300753,0175.8%
50-54410,025421,672831,6976.4%
55-59447,477468,205915,6827.0%
60-64447,607476,770924,3777.1%
65-69383,605418,645802,2506.2%
70-74299,113344,027643,1404.9%
75-79192,774241,518434,2923.3%
80-84121,160169,577290,7372.2%
85+109,866207,606317,4722.4%
How Pennsylvania compares with similar-sized states, 2020
RankStateResidentsRelative
2 Texas 29,237,895
3 Florida 21,591,325
4 New York 20,122,262
5 Pennsylvania 12,995,576
6 Illinois 12,795,348
7 Ohio 11,798,534
8 Georgia 10,732,595
Frequently asked questions about Pennsylvania's population
What is the population of Pennsylvania?
Pennsylvania had an estimated 12,995,576 residents on July 1, 2020, according to the U.S. Census Bureau, Population Estimates Program. That ranks 5th among the 51 states and the District of Columbia.
What is the median age in Pennsylvania?
The median age in Pennsylvania was 41.0 years in 2020, the 8th oldest of the 51 states and DC. That is 2.3 years older than the national median of 38.7.
How many people in Pennsylvania are 65 or older?
About 2,487,891 residents of Pennsylvania (19.1%) were 65 or older in 2020, against 16.9% under 15 and 64.0% aged 15 to 64.
What does the population pyramid of Pennsylvania show?
In 2020, Pennsylvania: more residents are 65 or older (19.1%) than under 15 (16.9%): an ageing, top-heavy pyramid. There were 95.9 men for every 100 women.
How fast is the population of Pennsylvania changing?
The population of Pennsylvania grew by 2.2% between 2010 and 2020, and by 1.5% in the last year.
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