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Population per Square Mile in Pennsylvania, by County

Population per Square Mile for every county in Pennsylvania, ranked. The highest is Philadelphia County at 11,759.9 and the lowest is Cameron County at 11.2.

Pennsylvania: 291.0 · United States: n/a · median county in Pennsylvania: 138.9

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#County Population per Square Mile
1Philadelphia County11,759.9
2Delaware County3,151.2
3Montgomery County1,796.4
4Allegheny County1,696.2
5Lehigh County1,096.9
6Bucks County1,071.2
7Northampton County861.5
8Chester County729.9
9Lancaster County591.1
10Dauphin County551.7
11York County511.9
12Berks County505.6
13Cumberland County491.9
14Lackawanna County471.0
15Lebanon County398.5
16Beaver County382.6
17Luzerne County368.3
18Westmoreland County343.0
19Erie County336.8
20Monroe County275.4
21Butler County249.9
22Washington County245.1
23Lawrence County237.9
24Blair County231.0
25Adams County204.6
26Franklin County203.8
27Northumberland County197.9
28Cambria County191.2
29Schuylkill County184.4
30Carbon County171.4
31Mercer County162.5
32Fayette County159.3
33Centre County143.2
34Montour County138.9
35Columbia County135.3
36Union County134.4
37Snyder County120.7
38Mifflin County112.0
39Pike County111.3
40Indiana County100.4
41Armstrong County98.9
42Lycoming County92.3
43Perry County83.8
44Crawford County81.7
45Venango County73.9
46Wayne County70.6
47Clearfield County68.7
48Somerset County67.7
49Jefferson County67.2
50Wyoming County65.4
51Clarion County61.9
52Greene County60.5
53Juniata County59.7
54Bradford County52.2
55Huntingdon County49.9
56Bedford County47.0
57Susquehanna County46.4
58Warren County42.9
59Clinton County42.5
60McKean County40.7
61Elk County36.9
62Tioga County36.1
63Fulton County33.2
64Forest County15.7
65Potter County15.0
66Sullivan County13.1
67Cameron County11.2

People divided by land area. Water is excluded, so lake and coastal counties are not unfairly diluted.

Source: ACS 2020-2024 5-Year Estimates, 2024.

Pennsylvania ranks 11th of 52 states for population per square mile.

Population per Square Mile in other states

Other statistics for Pennsylvania by county