I don't know any ZIP Codes except the ones where I live and work so ZIP Codes aren't useful for me. If I want to know whether something being offered for sale or trade is close to me I want to know a (big or medium sized) city name, or a County name.
If seller says "30267" it means little to me, unless I Google it online looking for a ZIP Code map.
If the seller says "Crawford" or "Lexington" then I might recall from memory that these places are somewhere near Athens, and
probably outside of my area of interest.
Ditto if the seller says "Oglethorpe County." I can guess that they're too far from me, but I'd have to consult the internet to be sure.
But if somebody said they're
"20 miles due east of Athens"
then I have a very good idea where they are and I don't need to look anything up online.