Pennsylvania 2020 Census Population Density By County Map

The population density of Pennsylvania from the 2020 Census was 290.61, based on data from the US Census Bureau.

Philadelphia County had the highest population density (11,936.88), followed by Delaware County (3,138.1), and then Montgomery County (1,773.51). On the other hand, the 3 counties with the lowest population density were: Cameron County (11.48), Sullivan County (12.98), and Potter County (15.16).

You can also see this information for other states and also for the US by state.

Hover over or click on the counties to see the population density for each county. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.