eircode

In Ireland, rural addresses are specified by the county, nearest post town, and the townland. Urban addresses are specified by county, city or town name, street name, house number or name, and apartment or flat number where relevant. 35% (over 600,000) Irish premises have non-unique addresses due to an absence of house numbers or names. In smaller towns and many townlands, this requires postal workers to remember which family names correspond to which house.