Ireland Address Format
Irish addresses go from smallest unit to largest: recipient, house number + street, town/city, then the Eircode alone on the last line (before the country on international mail). Dublin addresses traditionally include the postal district (Dublin 1, Dublin 2...) which survives inside the Eircode routing key (D01, D02...). A county line is optional and unnecessary when an Eircode is used.
Standard format
Eircode rules
| Field name | Eircode |
|---|---|
| Format | ANN AAAA (N = digit, A = letter) |
| Example | D01 F5P2 |
| Pattern | ^[A-Za-z]\d[A-Za-z\d]\s?[A-Za-z\d]{4}$ |
| Rule | 7 alphanumeric characters introduced in 2015: a 3-character routing key (letter + 2 digits/letters, e.g. D01 for Dublin 1) followed by a space and a 4-character unique identifier. Each Eircode is unique to an individual address. |
Fields used in Ireland
| State / region | Yes — "County" locally |
|---|---|
| Street address | Yes |
| P.O. Box | Yes — "PO Box" locally |
FAQ
What is the Eircode format in Ireland?
The format is ANN AAAA (N = digit, A = letter), for example D01 F5P2. 7 alphanumeric characters introduced in 2015: a 3-character routing key (letter + 2 digits/letters, e.g. D01 for Dublin 1) followed by a space and a 4-character unique identifier. Each Eircode is unique to an individual address.
How do you write an address in Ireland?
Ireland addresses are written from the smallest unit to the largest. Irish addresses go from smallest unit to largest: recipient, house number + street, town/city, then the Eircode alone on the last line (before the country on international mail). Dublin addresses traditionally include the postal district (Dublin 1, Dublin 2...) which survives inside the Eircode routing key (D01, D02...). A county line is optional and unnecessary when an Eircode is used.
Does Ireland use postal codes?
Yes. Ireland uses the Eircode in the format ANN AAAA (example: D01 F5P2). 7 alphanumeric characters introduced in 2015: a 3-character routing key (letter + 2 digits/letters, e.g. D01 for Dublin 1) followed by a space and a 4-character unique identifier. Each Eircode is unique to an individual address.
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