When I do a search for buyers I typically use school districts since it’s a broad area to search within. It works really well if the buyers would prefer to stay in a certain school district or if they have a narrow search criteria (like a 3 car garage under $400,000) and have a broad area they are looking within (like an entire county). I have run into problems with missing available homes by using other ways of searching like a map search or a radius search. This happens because the listing was not entered correctly into the system by the listing agent. When inputting a new listing into our MLS system the school district is a required field so it ensures everything in that area will show up in the search.
Map of Chester County School districts:
Map of Delaware County School Districts:
Map of counties in Pennsylvania