| population | |
| Adams County | 101407 |
| Allegheny County | 1223348 |
| Armstrong County | 68941 |
| Beaver County | 170539 |
| Bedford County | 49762 |
| Berks County | 411442 |
| Blair County | 127089 |
| Bradford County | 62622 |
| Bucks County | 625249 |
| Butler County | 183862 |
| Cambria County | 143679 |
| Cameron County | 5085 |
| Carbon County | 65249 |
| Centre County | 153990 |
| Chester County | 498886 |
| Clarion County | 39988 |
| Clearfield County | 81642 |
| Clinton County | 39238 |
| Columbia County | 67295 |
| Crawford County | 88765 |
| Cumberland County | 235406 |
| Dauphin County | 268100 |
| Delaware County | 558979 |
| population | |
| Elk County | 31946 |
| Erie County | 280566 |
| Fayette County | 136606 |
| Forest County | 7716 |
| Franklin County | 149618 |
| Fulton County | 14845 |
| Greene County | 38686 |
| Huntingdon County | 45913 |
| Indiana County | 88880 |
| Jefferson County | 45200 |
| Juniata County | 24636 |
| Lackawanna County | 214437 |
| Lancaster County | 519445 |
| Lawrence County | 91108 |
| Lebanon County | 133568 |
| Lehigh County | 349497 |
| Luzerne County | 320918 |
| Lycoming County | 116111 |
| McKean County | 43450 |
| Mercer County | 116638 |
| Mifflin County | 46682 |
| Monroe County | 169842 |
| Montgomery County | 799874 |
| population | |
| Montour County | 18267 |
| Northampton County | 297735 |
| Northumberland County | 94528 |
| Perry County | 45969 |
| Philadelphia County | 1526006 |
| Pike County | 57369 |
| Potter County | 17457 |
| Schuylkill County | 148289 |
| Snyder County | 39702 |
| Somerset County | 77742 |
| Sullivan County | 6428 |
| Susquehanna County | 43356 |
| Tioga County | 41981 |
| Union County | 44947 |
| Venango County | 54984 |
| Warren County | 41815 |
| Washington County | 207820 |
| Wayne County | 52822 |
| Westmoreland County | 365169 |
| Wyoming County | 28276 |
| York County | 434972 |
 | University Park Airport | ~ 13.65 km |
| Mifflin County Airport | ~ 14.96 km |
| William T. Piper Memorial Airport | ~ 44.00 km |
| Penn Valley Airport | ~ 70.40 km |
| Altoona Blair County Airport | ~ 76.68 km |
| Williamsport Regional Airport | ~ 81.75 km |
| St Marys Municipal Airport | ~ 95.71 km |
| Capital City Airport | ~ 96.68 km |
| Muir Army Air Field (Fort Indiantown Gap) Airport | ~ 103.75 km |
