Also PA here, and it depends upon which end of the state you’re in. I used to say “soda pop”, but generally say “soda” now. To me, “Pop”, is what we called my late grandfather, or it’s what those crazy candy rocks do in your mouth. Pop is not a beverage in my mind.
The dividing lines for what it’s called here, also come pretty close to the differences in convenience stores: GetGo vs Sheetz vs WaWa.