The list of Eircode routing key areas in Ireland is a tabulation of the routing key areas used by An Post and other mail delivery services for the purposes of directing mail within Ireland. A routing key area "defines a principal post town" according to An Post. There are currently 139 routing key areas in the country. This table does not include the second part of Ireland's seven-character Eircodes, known as the "unique identifier". These are unique to individual addresses and are not street-level identifiers, as is the case in other countries. There are currently 2.2 million of these codes.
