I would have figured France or something, but I believe it’s just a made-up city called Koriko. I tried finding an actual city, to no avail. I also tried to find an actual city by the name of Koriko, but had the same results.
My oh my I love that movie! Same as 90s_kid, it brings back pleasant childhood memories!
I’ve heard the same thing at Brome and I’m going to side with that. If Miyazaki had indeed based it mostly off of an island near France, I’m sure he would have told us. He’s very open about the thought that he puts into his masterpieces.