What is the postcode of Glasnevin Dublin 9?

Ireland does not have postcodes as such. Dublin does have postal districts, like Dublin 9. So the address you would have would finish with:

Glasnevin

Dublin 9

Ireland.

For internet forms looking for postcodes try using IE for any Irish addresses. That usually works.

Postal Codes will be introduced soon probably middle 2011 but Garmin are offering unofficial Loc8 codes and these are being displayed under a limited number of road signs in Dublin