The only county route I can recall using when they had fare zones then was North East, which had only two zones. The second zone started in Harborcreek borough, and the driver would pull over there and collect the second fare. Usually riders knew that was part of the ride, but I did once see a rider become belligerent with the driver because she thought the driver was pulling some sort of scam. The zone fare set-up was printed on the schedule, but she may not have actually seen a schedule. I wondered at the time why the company didn't have kind of have a sign or info sheet available on the county buses to head off these confrontations, because it must have sometimes been unpleasant or scary for the driver if a rider went off on them like this.
The fare zones were eliminated I think about ten years ago.