| Rank |
County |
Housing Units |
| 1 |
Philadelphia County, Pennsylvania
|
670,254
|
| 2 |
Allegheny County, Pennsylvania
|
588,591
|
| 3 |
Montgomery County, Pennsylvania
|
327,140
|
| 4 |
Bucks County, Pennsylvania
|
246,488
|
| 5 |
Delaware County, Pennsylvania
|
223,105
|
| 6 |
Lancaster County, Pennsylvania
|
204,747
|
| 7 |
Chester County, Pennsylvania
|
193,919
|
| 8 |
York County, Pennsylvania
|
179,769
|
| 9 |
Westmoreland County, Pennsylvania
|
168,381
|
| 10 |
Berks County, Pennsylvania
|
165,269
|
| 11 |
Luzerne County, Pennsylvania
|
148,716
|
| 12 |
Lehigh County, Pennsylvania
|
143,655
|
| 13 |
Dauphin County, Pennsylvania
|
121,188
|
| 14 |
Northampton County, Pennsylvania
|
120,883
|
| 15 |
Erie County, Pennsylvania
|
119,391
|
| 16 |
Cumberland County, Pennsylvania
|
101,122
|
| 17 |
Lackawanna County, Pennsylvania
|
96,798
|
| 18 |
Washington County, Pennsylvania
|
93,242
|
| 19 |
Monroe County, Pennsylvania
|
80,604
|
| 20 |
Butler County, Pennsylvania
|
78,387
|
| 21 |
Beaver County, Pennsylvania
|
77,963
|
| 22 |
Schuylkill County, Pennsylvania
|
69,157
|
| 23 |
Cambria County, Pennsylvania
|
65,445
|
| 24 |
Centre County, Pennsylvania
|
64,115
|
| 25 |
Franklin County, Pennsylvania
|
63,882
|
| 26 |
Fayette County, Pennsylvania
|
62,248
|
| 27 |
Blair County, Pennsylvania
|
56,194
|
| 28 |
Lebanon County, Pennsylvania
|
56,041
|
| 29 |
Lycoming County, Pennsylvania
|
52,266
|
| 30 |
Mercer County, Pennsylvania
|
51,748
|
| 31 |
Northumberland County, Pennsylvania
|
45,258
|
| 32 |
Crawford County, Pennsylvania
|
44,734
|
| 33 |
Lawrence County, Pennsylvania
|
41,023
|
| 34 |
Adams County, Pennsylvania
|
41,020
|
| 35 |
Clearfield County, Pennsylvania
|
38,627
|
| 36 |
Indiana County, Pennsylvania
|
38,205
|
| 37 |
Pike County, Pennsylvania
|
38,189
|
| 38 |
Somerset County, Pennsylvania
|
38,110
|
| 39 |
Carbon County, Pennsylvania
|
34,509
|
| 40 |
Armstrong County, Pennsylvania
|
32,449
|
| 41 |
Wayne County, Pennsylvania
|
31,542
|
| 42 |
Bradford County, Pennsylvania
|
30,009
|
| 43 |
Columbia County, Pennsylvania
|
29,637
|
| 44 |
Venango County, Pennsylvania
|
27,459
|
| 45 |
Bedford County, Pennsylvania
|
23,920
|
| 46 |
Warren County, Pennsylvania
|
23,533
|
| 47 |
Susquehanna County, Pennsylvania
|
23,058
|
| 48 |
Huntingdon County, Pennsylvania
|
22,406
|
| 49 |
Jefferson County, Pennsylvania
|
22,355
|
| 50 |
Mifflin County, Pennsylvania
|
21,548
|
| 51 |
Tioga County, Pennsylvania
|
21,459
|
| 52 |
McKean County, Pennsylvania
|
21,117
|
| 53 |
Perry County, Pennsylvania
|
20,528
|
| 54 |
Clarion County, Pennsylvania
|
19,939
|
| 55 |
Clinton County, Pennsylvania
|
19,068
|
| 56 |
Elk County, Pennsylvania
|
17,458
|
| 57 |
Union County, Pennsylvania
|
17,190
|
| 58 |
Greene County, Pennsylvania
|
16,342
|
| 59 |
Snyder County, Pennsylvania
|
16,090
|
| 60 |
Wyoming County, Pennsylvania
|
13,251
|
| 61 |
Potter County, Pennsylvania
|
12,953
|
| 62 |
Juniata County, Pennsylvania
|
11,044
|
| 63 |
Forest County, Pennsylvania
|
8,728
|
| 64 |
Montour County, Pennsylvania
|
7,982
|
| 65 |
Fulton County, Pennsylvania
|
7,095
|
| 66 |
Sullivan County, Pennsylvania
|
6,309
|
| 67 |
Cameron County, Pennsylvania
|
4,423
|