How to Write an Address in Ireland: Format, Postcodes and Examples

International  |  September 28, 2026  |  2 min read

Addresses in Ireland follow their own order and postcode rules. This guide shows how to write one correctly, with real postcode examples and the most common mistakes, whether you are sending mail, building a checkout form or preparing test data.

Address format

Street or house name, town, county if useful, then the Eircode on the last line.

Ireland postcode format

Format: A99 A9A9

Ireland's Eircode has seven characters: a three-character routing key for the area and a four-character unique identifier that points to one specific address.

More examples

Sending to Ireland from abroad

Write the address exactly as it is used locally, then add the country name in capital English letters on the last line.

Tips and common mistakes

• Many rural homes have no house number, which is why each address has its own Eircode.
• Write the Eircode as two groups separated by a space.
• Include the county (for example Co. Cork) when there is no Eircode.
• Mail to Northern Ireland uses UK postcodes, not Eircodes.

Provinces of Ireland

Ireland has 4 provinces in our data. The province is rarely required in a postal address, but forms and databases often store it separately.

Test data for Ireland

There is no widely reserved fictional phone range here, so the generator leaves phone numbers out. Generated addresses use real towns and postcode areas with invented streets and names, so they are safe for form testing, mockups and documentation.