Statistics for Pennsylvania Counties by Population Density

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Rank	County	People per sq. mile	% Correct
1	Philadelphia	10,839.8	100%
2	Delaware	2,942.1	73%
3	Montgomery	1,661.3	73%
4	Allegheny	1,651.0	64%
5	Lehigh	1,018.1	64%
6	Bucks	1,007.0	55%
9	Lancaster	535.5	55%
7	Northampton	792.9	55%
15	Beaver	383.1	45%
12	Berks	477.1	45%
8	Chester	667.0	45%
10	Dauphin	483.6	45%
13	Lackawanna	460.4	45%
11	York	481.0	45%
24	Cambria	203.0	36%
67	Cameron	12.4	36%
14	Cumberland	435.1	36%
61	Elk	37.9	36%
64	Forest	17.8	36%
19	Monroe	272.7	36%
65	Potter	16.1	36%
21	Washington	241.8	36%
18	Westmoreland	350.0	36%
27	Adams	194.7	27%
22	Blair	240.4	27%
23	Butler	232.8	27%
32	Carbon	167.5	27%
29	Erie	179.8	27%
26	Franklin	196.1	27%
63	Fulton	33.7	27%
53	Juniata	63.0	27%
20	Lawrence	247.7	27%
16	Lebanon	372.9	27%
17	Luzerne	353.5	27%
60	McKean	43.7	27%
35	Montour	139.6	27%
25	Northumberland	197.5	27%
28	Schuylkill	188.0	27%
66	Sullivan	14.1	27%
62	Tioga	37.3	27%
57	Bedford	48.5	18%
54	Bradford	53.8	18%
34	Centre	140.4	18%
59	Clinton	44.2	18%
36	Columbia	136.9	18%
30	Fayette	169.6	18%
55	Huntingdon	51.7	18%
31	Mercer	169.6	18%
41	Pike	100.3	18%
37	Snyder	120.4	18%
46	Somerset	71.2	18%
56	Susquehanna	51.3	18%
33	Union	141.5	18%
58	Warren	45.9	18%
48	Wyoming	69.7	18%
40	Armstrong	103.0	9%
52	Clarion	64.7	9%
47	Clearfield	70.6	9%
43	Crawford	84.6	9%
51	Greene	66.0	9%
39	Indiana	105.8	9%
50	Jefferson	68.4	9%
42	Lycoming	93.8	9%
38	Mifflin	112.6	9%
44	Perry	82.4	9%
45	Venango	79.5	9%
49	Wayne	69.2	9%