Jonathan Cervas

Pennsylvania · Census 2010 to 2020

The state grew 2.4%, but 44 of 67 counties shrank

Pennsylvania added about 300,000 residents over the decade. The gains were concentrated in the southeast and the south-central corridor from Harrisburg to Lancaster and York, the Lehigh Valley, and around Pittsburgh. Most of the rural north and west lost population, while only 23 counties grew.

All 67 counties, ranked by change

Percent change in total population, 2010 to 2020. Hover a bar or a county to link the views.

All 67 counties by population

Ranked by 2020 population. Click a column heading to re-sort.
Source: U.S. Census Bureau, 2010 and 2020 Decennial Census redistricting data (P.L. 94-171), total population. Boundaries: 2020 Census cartographic boundary file (1:500k), filtered, projected to Pennsylvania State Plane South, and simplified with Mapshaper. See also Pennsylvania State Data Center, Data Brief, August 2021.