What county is 5A in PA?

Could you please clarify what you mean by "5A" in the context of Pennsylvania counties? Is it a specific designation or code that refers to a particular county? If so, could you provide more context or information about where you encountered this term? Without further details, it's difficult to give a definitive answer as there isn't a universally recognized "5A" designation for counties in Pennsylvania. It may be a local or specific designation used by a particular organization or agency.