| State | County | Pop. | Density | Voted | % Dem. | % Rep. | Win |
|---|---|---|---|---|---|---|---|
| Pennsylvania | blair county | 121829 | 89.4604 | 63595 | 0.277317% | 0.712415% | Republican |
| Pennsylvania | bradford county | 60323 | 20.2988 | 30159 | 0.266786% | 0.716204% | Republican |
| Pennsylvania | bucks county | 628270 | 401.345 | 396234 | 0.516644% | 0.47287% | Democrat |
| Pennsylvania | butler county | 187853 | 91.9743 | 113305 | 0.331036% | 0.656273% | Republican |
| Pennsylvania | cambria county | 130192 | 73.0267 | 70574 | 0.307904% | 0.681342% | Republican |
| Pennsylvania | cameron county | 4447 | 4.33334 | 2434 | 0.260477% | 0.727609% | Republican |
| Pennsylvania | carbon county | 64182 | 64.963 | 33629 | 0.333403% | 0.653722% | Republican |
| Pennsylvania | centre county | 162385 | 56.491 | 77493 | 0.516885% | 0.469359% | Democrat |
| Pennsylvania | chester county | 524989 | 270.077 | 314502 | 0.579875% | 0.408789% | Democrat |
| Pennsylvania | clarion county | 38438 | 24.7007 | 19493 | 0.239984% | 0.747858% | Republican |
| Pennsylvania | clearfield county | 79255 | 26.7328 | 39422 | 0.245371% | 0.740779% | Republican |
| Pennsylvania | clinton county | 38632 | 16.7975 | 17625 | 0.31217% | 0.675291% | Republican |
| Pennsylvania | columbia county | 64964 | 51.9197 | 31171 | 0.337878% | 0.644766% | Republican |
| Pennsylvania | crawford county | 84629 | 32.2784 | 42004 | 0.307685% | 0.679911% | Republican |
| Pennsylvania | cumberland county | 253370 | 179.335 | 141595 | 0.439599% | 0.545302% | Republican |