| Rank |
County |
Households |
| 1 |
Philadelphia County, Pennsylvania
|
578,125
|
| 2 |
Allegheny County, Pennsylvania
|
523,175
|
| 3 |
Montgomery County, Pennsylvania
|
307,598
|
| 4 |
Bucks County, Pennsylvania
|
229,955
|
| 5 |
Delaware County, Pennsylvania
|
206,596
|
| 6 |
Lancaster County, Pennsylvania
|
192,681
|
| 7 |
Chester County, Pennsylvania
|
182,732
|
| 8 |
York County, Pennsylvania
|
167,568
|
| 9 |
Berks County, Pennsylvania
|
153,780
|
| 10 |
Westmoreland County, Pennsylvania
|
152,819
|
| 11 |
Lehigh County, Pennsylvania
|
133,159
|
| 12 |
Luzerne County, Pennsylvania
|
131,052
|
| 13 |
Northampton County, Pennsylvania
|
112,111
|
| 14 |
Erie County, Pennsylvania
|
108,303
|
| 15 |
Dauphin County, Pennsylvania
|
108,047
|
| 16 |
Cumberland County, Pennsylvania
|
94,412
|
| 17 |
Lackawanna County, Pennsylvania
|
86,491
|
| 18 |
Washington County, Pennsylvania
|
83,806
|
| 19 |
Butler County, Pennsylvania
|
72,458
|
| 20 |
Beaver County, Pennsylvania
|
70,198
|
| 21 |
Schuylkill County, Pennsylvania
|
60,029
|
| 22 |
Monroe County, Pennsylvania
|
59,941
|
| 23 |
Cambria County, Pennsylvania
|
58,428
|
| 24 |
Franklin County, Pennsylvania
|
58,032
|
| 25 |
Centre County, Pennsylvania
|
56,134
|
| 26 |
Fayette County, Pennsylvania
|
54,717
|
| 27 |
Lebanon County, Pennsylvania
|
51,899
|
| 28 |
Blair County, Pennsylvania
|
51,771
|
| 29 |
Lycoming County, Pennsylvania
|
46,604
|
| 30 |
Mercer County, Pennsylvania
|
46,418
|
| 31 |
Northumberland County, Pennsylvania
|
39,293
|
| 32 |
Adams County, Pennsylvania
|
38,431
|
| 33 |
Lawrence County, Pennsylvania
|
36,613
|
| 34 |
Crawford County, Pennsylvania
|
35,368
|
| 35 |
Indiana County, Pennsylvania
|
34,558
|
| 36 |
Clearfield County, Pennsylvania
|
32,715
|
| 37 |
Somerset County, Pennsylvania
|
30,168
|
| 38 |
Armstrong County, Pennsylvania
|
28,807
|
| 39 |
Carbon County, Pennsylvania
|
26,136
|
| 40 |
Columbia County, Pennsylvania
|
25,906
|
| 41 |
Bradford County, Pennsylvania
|
24,630
|
| 42 |
Venango County, Pennsylvania
|
22,482
|
| 43 |
Pike County, Pennsylvania
|
22,207
|
| 44 |
Bedford County, Pennsylvania
|
20,001
|
| 45 |
Wayne County, Pennsylvania
|
19,305
|
| 46 |
Mifflin County, Pennsylvania
|
18,987
|
| 47 |
Jefferson County, Pennsylvania
|
18,389
|
| 48 |
Perry County, Pennsylvania
|
18,098
|
| 49 |
Warren County, Pennsylvania
|
17,602
|
| 50 |
Susquehanna County, Pennsylvania
|
17,273
|
| 51 |
Tioga County, Pennsylvania
|
17,187
|
| 52 |
McKean County, Pennsylvania
|
17,180
|
| 53 |
Huntingdon County, Pennsylvania
|
16,791
|
| 54 |
Clarion County, Pennsylvania
|
15,827
|
| 55 |
Union County, Pennsylvania
|
15,310
|
| 56 |
Clinton County, Pennsylvania
|
15,282
|
| 57 |
Snyder County, Pennsylvania
|
14,320
|
| 58 |
Greene County, Pennsylvania
|
14,102
|
| 59 |
Elk County, Pennsylvania
|
13,557
|
| 60 |
Wyoming County, Pennsylvania
|
11,013
|
| 61 |
Juniata County, Pennsylvania
|
9,103
|
| 62 |
Montour County, Pennsylvania
|
7,200
|
| 63 |
Potter County, Pennsylvania
|
7,196
|
| 64 |
Fulton County, Pennsylvania
|
5,929
|
| 65 |
Sullivan County, Pennsylvania
|
2,438
|
| 66 |
Cameron County, Pennsylvania
|
2,133
|
| 67 |
Forest County, Pennsylvania
|
1,990
|