Population data released Thursday by the U.S. Census Bureau shows which of Pennsylvania 67 counties gained and lost population between 2010 and 2020.
County | Population 2020 | Population change 2010-2020 | Pecentage change 2010-2020 |
---|---|---|---|
Philadelphia County | 1,603,797 | 77,791 | 5.1% |
Montgomery County | 856,553 | 56,679 | 7.1% |
Chester County | 534,413 | 35,527 | 7.1% |
Lancaster County | 552,984 | 33,539 | 6.5% |
Allegheny County | 1,250,578 | 27,230 | 2.2% |
Lehigh County | 374,557 | 25,060 | 7.2% |
Cumberland County | 259,469 | 24,063 | 10.2% |
York County | 456,438 | 21,466 | 4.9% |
Bucks County | 646,538 | 21,289 | 3.4% |
Dauphin County | 286,401 | 18,301 | 6.8% |