I have a close friend who lives in rural Ireland. That's not in a town, but on a small farm in a general area of about 15-20 other small farms. His address is just the name of the general area and the county. The Irish postal system is clever enough to know that the person with this name, in that general area lives in that house. In fact, he probably still isn't even really classified by his name, rather as the husba…
Ireland is like that throughout the whole country, except maybe Dublin. It's worked for them for ages; there's been articles written about wackily-addressed mail being sent to people in Ireland and arriving to the correct destination. (I remember one that was just a long description going something like "the lad who..."). The problem is if someone in Ireland tries to order something from a company in another country,…
Royal Mail don't recommend these long addresses; there's a form on their website to produce a canonical address, something like
[Building name]
[Number] Street
[Hamlet/village/town]
TOWN
PO57 C0DE
However, good luck telling anyone who's proud of their tiny hamlet this...http://www.royalmail.com/find-a-postcode (and the "Read our PAF Code of Practice (PDF)" link).