Eircode routing keys in Ireland
The first three characters of an Eircode make up what’s called the routing key. Routing keys were introduced as part of the Eircode system to help with mail sorting and delivery.
Eircode
What is Eircode?
The creation and introduction of the Eircode was a game-changer for Irish addressing. Before 2015, Ireland was one of the few developed countries that didn’t have a defined postal system. Part of the complexity involved the fact that over 35% of properties share their address with at least one other property.
