Skip to content

Pennsylvania and Illinois, compared

Pennsylvania had 13,059,432 people on July 1, 2025, and Illinois 12,719,141, in the Census Bureau’s estimates.

Side by side

Pennsylvania and Illinois: population and change, July 2020 to July 2025
MeasurePennsylvaniaIllinois
Population, July 2025The Census Bureau's Vintage 2025 estimate.13,059,43212,719,141
Change since July 2020As a share of the first July.+0.5%−0.6%
Births less deathsOver the five full years to July 2025.−81,866+38,983
Moves from abroadNet international migration, as the Bureau estimates it.+196,095+313,184
Moves from other statesNet domestic migration.−50,746−431,149
Median ageAmerican Community Survey, 2020–2024.40.9±0.239.0±0.1
Median household incomeIn the dollars of the survey’s last year.$77,971±$342$83,390±$362
Below the poverty lineShare of the people whose poverty status is determined.11.7%±0.1%11.8%±0.1%
Born abroadShare of residents born outside the United States.7.7%±0.1%14.7%±0.1%

Each on its own

Data retrieved

Sources

Compiled automatically from Census Bureau population estimates — nation and states, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built