| Rank |
County |
Land Area |
| 1 |
Lycoming County, Pennsylvania
|
1,228.6
|
| 2 |
Bradford County, Pennsylvania
|
1,147.4
|
| 3 |
Clearfield County, Pennsylvania
|
1,144.7
|
| 4 |
Tioga County, Pennsylvania
|
1,133.8
|
| 5 |
Centre County, Pennsylvania
|
1,109.9
|
| 6 |
Potter County, Pennsylvania
|
1,081.3
|
| 7 |
Somerset County, Pennsylvania
|
1,074.4
|
| 8 |
Westmoreland County, Pennsylvania
|
1,027.5
|
| 9 |
Bedford County, Pennsylvania
|
1,012.3
|
| 10 |
Crawford County, Pennsylvania
|
1,012.3
|
| 11 |
McKean County, Pennsylvania
|
979.2
|
| 12 |
Lancaster County, Pennsylvania
|
943.8
|
| 13 |
York County, Pennsylvania
|
904.2
|
| 14 |
Luzerne County, Pennsylvania
|
890.3
|
| 15 |
Clinton County, Pennsylvania
|
888.0
|
| 16 |
Warren County, Pennsylvania
|
884.1
|
| 17 |
Huntingdon County, Pennsylvania
|
874.6
|
| 18 |
Washington County, Pennsylvania
|
857.0
|
| 19 |
Berks County, Pennsylvania
|
856.5
|
| 20 |
Elk County, Pennsylvania
|
827.4
|
| 21 |
Indiana County, Pennsylvania
|
827.0
|
| 22 |
Susquehanna County, Pennsylvania
|
823.4
|
| 23 |
Erie County, Pennsylvania
|
799.1
|
| 24 |
Fayette County, Pennsylvania
|
790.3
|
| 25 |
Butler County, Pennsylvania
|
788.6
|
| 26 |
Schuylkill County, Pennsylvania
|
778.6
|
| 27 |
Franklin County, Pennsylvania
|
772.2
|
| 28 |
Chester County, Pennsylvania
|
750.5
|
| 29 |
Allegheny County, Pennsylvania
|
730.1
|
| 30 |
Wayne County, Pennsylvania
|
725.6
|
| 31 |
Cambria County, Pennsylvania
|
688.4
|
| 32 |
Venango County, Pennsylvania
|
674.3
|
| 33 |
Mercer County, Pennsylvania
|
672.6
|
| 34 |
Armstrong County, Pennsylvania
|
653.2
|
| 35 |
Jefferson County, Pennsylvania
|
652.4
|
| 36 |
Monroe County, Pennsylvania
|
608.3
|
| 37 |
Bucks County, Pennsylvania
|
604.3
|
| 38 |
Clarion County, Pennsylvania
|
600.8
|
| 39 |
Greene County, Pennsylvania
|
576.0
|
| 40 |
Perry County, Pennsylvania
|
551.5
|
| 41 |
Cumberland County, Pennsylvania
|
545.5
|
| 42 |
Pike County, Pennsylvania
|
545.0
|
| 43 |
Blair County, Pennsylvania
|
525.8
|
| 44 |
Dauphin County, Pennsylvania
|
525.0
|
| 45 |
Adams County, Pennsylvania
|
518.7
|
| 46 |
Columbia County, Pennsylvania
|
483.1
|
| 47 |
Montgomery County, Pennsylvania
|
483.0
|
| 48 |
Lackawanna County, Pennsylvania
|
459.1
|
| 49 |
Northumberland County, Pennsylvania
|
458.4
|
| 50 |
Sullivan County, Pennsylvania
|
449.9
|
| 51 |
Fulton County, Pennsylvania
|
437.6
|
| 52 |
Beaver County, Pennsylvania
|
434.7
|
| 53 |
Forest County, Pennsylvania
|
427.2
|
| 54 |
Mifflin County, Pennsylvania
|
411.0
|
| 55 |
Wyoming County, Pennsylvania
|
397.3
|
| 56 |
Cameron County, Pennsylvania
|
396.2
|
| 57 |
Juniata County, Pennsylvania
|
391.4
|
| 58 |
Carbon County, Pennsylvania
|
381.5
|
| 59 |
Northampton County, Pennsylvania
|
369.7
|
| 60 |
Lebanon County, Pennsylvania
|
361.8
|
| 61 |
Lawrence County, Pennsylvania
|
358.2
|
| 62 |
Lehigh County, Pennsylvania
|
345.2
|
| 63 |
Snyder County, Pennsylvania
|
328.7
|
| 64 |
Union County, Pennsylvania
|
316.0
|
| 65 |
Delaware County, Pennsylvania
|
183.8
|
| 66 |
Philadelphia County, Pennsylvania
|
134.1
|
| 67 |
Montour County, Pennsylvania
|
130.2
|