Counties in Pennsylvania by population density

Name: Counties in Pennsylvania by population density, 2022
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Philadelphia County had the highest population density of 67 counties in 2022, at 4,519.5 inhabitants per km². Cameron County had the lowest, at 4.3 inhabitants per km². The median was 53.6 inhabitants per km² and the figure for Pennsylvania was 112.1 inhabitants per km². Source: the U.S. Census Bureau.

Highest4,519.5Philadelphia County

Lowest4.3Cameron County

Median53.667 counties

Pennsylvania112.1History

Top 40 counties, 2022

CSV Chart (SVG)

inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

Rank	Counties	2022 inhabitants per km²	Change on 2021
1	Philadelphia County	4,519.5	-1.1%
2	Delaware County	1,211.3	-0.1%
3	Montgomery County	691.9	+0.1%
4	Allegheny County	652.4	-1%
5	Lehigh County	421.2	+0.2%
6	Bucks County	412.9	-0.2%
7	Northampton County	332.2	-0%
8	Chester County	281.5	+1.1%
9	Lancaster County	227.9	+0.1%
10	Dauphin County	212.6	+0.2%
11	York County	197	+0.5%
12	Berks County	194.9	+0.6%
13	Cumberland County	190.1	+1.1%
14	Lackawanna County	181.5	-0.2%
15	Lebanon County	153.7	+0.2%
16	Beaver County	147.2	-0.8%
17	Luzerne County	141.7	+0.2%
18	Westmoreland County	132.2	-0.5%
19	Erie County	130	-0.2%
20	Monroe County	106.3	-0.8%
21	Butler County	96.5	+0.3%
22	Washington County	94.6	-0.1%
23	Lawrence County	91.6	-0.9%
24	Blair County	88.8	-1.1%
25	Adams County	78.9	+0.3%
26	Franklin County	78.5	+0.3%
27	Northumberland County	76	-1%
28	Cambria County	73.7	-0.6%
29	Schuylkill County	71	-0%
30	Carbon County	66.3	-0.1%
31	Mercer County	62.7	-0.8%
32	Fayette County	61.3	-1.3%
33	Centre County	55.1	0%
34	Montour County	53.6	+0.1%
35	Columbia County	52.2	+0.6%
36	Union County	52.2	+0.5%
37	Snyder County	46.4	-0.6%
38	Mifflin County	43.2	-0.4%
39	Pike County	43	+1.1%
40	Indiana County	38.7	-0.3%
41	Armstrong County	38.3	-0.9%
42	Lycoming County	35.6	-0.3%
43	Perry County	32.3	+0.5%
44	Crawford County	31.4	-1.1%
45	Venango County	28.5	-0.7%
46	Wayne County	27.2	-0.2%
47	Clearfield County	26.3	-0.7%
48	Somerset County	26.1	-0.6%
49	Jefferson County	25.9	-0.9%
50	Wyoming County	25.3	-0.3%
51	Clarion County	24	-0.8%
52	Greene County	23.2	-2.1%
53	Juniata County	23	-0.2%
54	Bradford County	20.1	-0.6%
55	Huntingdon County	19.1	-1.6%
56	Bedford County	18.1	-0.3%
57	Susquehanna County	17.9	-0.8%
58	Warren County	16.5	-0.9%
59	Clinton County	16.4	-0.4%
60	McKean County	15.7	-1.4%
61	Elk County	14.2	-1.1%
62	Tioga County	13.9	-0.9%
63	Fulton County	12.9	0%
64	Forest County	6	-4.2%
65	Potter County	5.8	-0.7%
66	Sullivan County	5.1	+0.4%
67	Cameron County	4.3	-1.3%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Rank Counties in Pennsylvania by population density using official data, and cite the source.

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Questions

Which county has the highest population density?

Philadelphia County, with 4,519.5 inhabitants per km² in 2022, according to the U.S. Census Bureau.

Which county has the lowest population density?

Cameron County, with 4.3 inhabitants per km² in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.