Address Checker FAQs

What is the Address Checker?

The Address Checker uses the “Official Postal Address”.  This is a routing instruction to An Post and normally includes:

  1. Number or name of house and the name of the street, road, etc. In rural areas the name of the locality or townland should be shown. 
  2. Post Town. For Dublin addresses the postal district number, where applicable, should always be shown. 
  3. County Name. Some postal addresses include the name of a county other than the one in which the address is geographically located, e.g. Ardmore, Youghal, Co. Cork. Ardmore is geographically in Co. Waterford.

Why is the Official Postal Address important?

A correct postal address is a routing instruction to An Post. An incorrect or incomplete postal address may lead to delay, mis-delivery or non-delivery of mail. 

Why is my Postal Address different to my address?

An addressee can sometimes use different variations of their address depending on the circumstances, but An Post strongly recommends using the Official Postal Address to avoid any delays with the delivery of the mail piece.

Can I change my address?

An Post recommends that you use the “Official Postal Address” for mailing purposes as an incorrect or incomplete address may lead to delay, mis-delivery or non-delivery of mail. 

What is a Post Town?

The name of a town or Dublin Postal District associated with the address for Postal Delivery purposes.

  1. Post-town names are assigned by An Post for postal delivery purposes.
  2. Within numbered Dublin Districts this will be a Dublin District number.
  3. Within other Cities the Post-town name will be the name of the City - e.g. Cork City.
  4. For all other areas An Post designates the appropriate Post-town name.

My Post Town is several miles away, is this correct?

Sometimes the Post Town is the name of a town or village several miles distant, with which the addressee has little or no connection. If there is a local objection to using the name of the Post Town by itself, the word via may, if desired, be written before the name of the POST TOWN. An example for the Post Town of Youghal would be:

Via Youghal
Co. Cork

Another example is Ballygorey where the correct postal address is


Or it could be

Co. Kilkenny,
via Waterford

Why is An Post saying I am in another county?

Some postal addresses include the name of a county other than the one in which the address is geographically located, e.g. Ardmore, Youghal, Co. Cork. Ardmore is geographically in Co. Waterford, but Youghal is in Co. Cork.  When constructing the Official Postal Address you use the County of the Post Town.

What will happen my mail if i don't use this other County?

An Post strongly recommends you use the Official Postal Address.  The County of the Post Town is part of the Official Postal Address, if the geographic County is used it may lead to delay, mis-delivery or non-delivery of mail.

Why is the County name sometimes missing?

The County name should not be shown for address in cities or towns which bear the county names, e.g. Cork, Limerick, Tipperary etc. The County name is also omitted from the Dublin Postal Districts addresses, for example

An Post
Carlow Post Office
Burrin Street

Why is the Locality missing from my address in Dublin?

If desired, the name of the locality may be included, but its not  essential for delivery purposes. The name of the locality or second thoroughfare should, however, always be included in the address where it is necessary to distinguish between two or more streets in the same postal district, for example

Pembroke Cottages
Dublin 4


Pembroke Cottages
Dublin 4

Is my postal address going to be changed on a regular basis?

Postal Addresses in Ireland have remained stable for decades and there have been very few incidences of the postal address changing. In fact there has been only one event of a localised change of postal addressing in the state in the last thirty years.

Does this mean that An Post will change my address everytime it changes its operations?

An Post is very aware of the impact a change of postal address has on its customers. An Post is constantly reviewing its operations throughout the country to ensure best efficiency and service. However, one of the key guiding principles of these operational changes is that change to the postal address must be avoided. With only one localised change in postal addressing in Ireland in the last thirty years, An Post is confident that this commitment to no postal address change will be maintained into the future. 

How do I write my Address?

You should write your address using the following guidelines:

  1. The maximum number of lines for an address is 6.
  2. Each line should start at the same distance from the left hand edge of the cover, i.e. the address should not be written in the indented format.
  3. Each line should be limited to 32 characters.
  4. Individual characters should have a minimum height of 2mm, a maximum height of 7mm and a maximum width of 7mm.
  5. The address must be written in a compact form without a blank line between the Post Town or County Name (if required) and the other elements of the address. It is important that no part of the address is underlined.

Note: The Official Postal Address does not contain any abbreviations and An Post recommends that you use the full spelling when addressing a mail piece, for example Road not Rd.

Why is there no Irish translation?

A full list of Irish addresses will be available soon.

Only part of my address is translated in Irish?

A full list of Irish addresses will be available soon.

I could not find my address?

If you did not find your address, or you think it’s wrong, please email with the following:

  • Name/ Company Name
  • Contact Number
  • Address
  • Amended Address
  • Geographical Coordinates/ Map (If available)
  • Neighboring Eircode( If available)

Our Address Team process your address issue.

If you want to find out how Eircodes are generated, assigned and disseminated to postal addresses, please visit for further information.

What does the Copy button do?

If you click the copy button the address is copied to the clipboard, you can then paste the address to a document or a label for printinig.

My address is in the wrong location on the Map?

If your address is not in the right location please email with the correct information.



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