In pleasant contrast
I lived for several years in rural south-west Ireland, where my most specific address was which townland (division of a parish) I was in --- in my case, it referred to all the houses on a particular hill, regardless of which part of the road network it was on (there were roads onto the hill from either side, but none across it). No house numbers there; in fact, there's a phrase "living in the numbers" referring to urban living, where the houses have numbers.
In pleasant contrast to many of the stories here, my postal deliveries started arriving before I had thought of going round to the local Post Office to tell them which house I was in... the postman spotted a new name, and delivered to the house which had been unoccupied for a few weeks but now had someone in it. But that's an advantage of having a local postman, which delivery companies don't have the target density to do.