I know most of the counties, but my da is from Mayo, and I've actually been to Ireland many times growing up, so I've an unfair advantage to most Americans.
I've seen it on countless videos and magazine articles etc ; people making fun of Americans for not knowing where Belgium is on a map, or something similar. Speaking as an Irish man, how many would be able to name all of the counties without help from the internet ?
https://void.cat/d/M8KCfs2erYmzZKUJPKaEzL.webp
Bear in mind that this is just within my own country and it is difficult for me to get the ones in the middle , now consider how many Irish or Europeans (I don't identify as being European culturally I prefer simply Irish) could fill in the states without any help from the internet or an atlas ? Not that many, does that make us dumb , of course not !