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   2010  +1 +5

12,711,406 people lived in Pennsylvania on July 1, 2010: the 6th-largest population among the 50 states and the District of Columbia. The median age was 40.2 years (United States: 37.2); children (17.9%) and older adults (15.4%) make up similar shares of the population. There were 95.1 men for every 100 women. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2020 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, 2010
Population
12,711,406
Rank by population
6th of 51
Median age
40.2
Men per 100 women
95.1
Under 15
17.9%
15–64
66.7%
65 and over
15.4%
Child dependency
26.8
Old-age dependency
23.2
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2010
AgeMenWomenTotalShare
0-4373,049356,080729,1295.7%
5-9383,756368,514752,2705.9%
10-14404,307385,333789,6406.2%
15-19460,750440,824901,5747.1%
20-24443,205433,359876,5646.9%
25-29394,844390,635785,4796.2%
30-34366,875366,953733,8285.8%
35-39377,058380,702757,7606.0%
40-44420,778428,531849,3096.7%
45-49468,512483,234951,7467.5%
50-54484,362500,576984,9387.7%
55-59432,928451,733884,6617.0%
60-64362,192389,463751,6555.9%
65-69259,722295,242554,9644.4%
70-74192,957234,774427,7313.4%
75-79153,322207,174360,4962.8%
80-84121,016190,308311,3242.4%
85+96,455211,883308,3382.4%
How Pennsylvania compares with similar-sized states, 2010
RankStateResidentsRelative
3 New York 19,399,956
4 Florida 18,846,143
5 Illinois 12,840,545
6 Pennsylvania 12,711,406
7 Ohio 11,539,449
8 Michigan 9,877,597
9 Georgia 9,712,209
Frequently asked questions about Pennsylvania's population
What is the population of Pennsylvania?
Pennsylvania had an estimated 12,711,406 residents on July 1, 2010, according to the U.S. Census Bureau, Population Estimates Program. That ranks 6th among the 51 states and the District of Columbia.
What is the median age in Pennsylvania?
The median age in Pennsylvania was 40.2 years in 2010, the 6th oldest of the 51 states and DC. That is 3.0 years older than the national median of 37.2.
How many people in Pennsylvania are 65 or older?
About 1,962,853 residents of Pennsylvania (15.4%) were 65 or older in 2010, against 17.9% under 15 and 66.7% aged 15 to 64.
What does the population pyramid of Pennsylvania show?
In 2010, Pennsylvania: children (17.9%) and older adults (15.4%) make up similar shares of the population. There were 95.1 men for every 100 women.
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