The country code and area code of Sligo, Ireland is 353, (0)71.
The country code and area code of Waterford, Ireland is 353, (0)51.
The country code and area code of Letterkenny, Ireland is 353, (0)74.
Ireland does not have postal codes. You would finish an address to there in this way and it would have no problem in getting to its destination: Sligo, Co. Sligo Ireland.
The country code and area code of Ennis, Ireland is 353, (0)65.
The country code and area code of Clonmel, Ireland is 353, (0)52.
The country code and area code of Portlaoise, Ireland is 353, (0)57.
The country code and area code of Longford, Ireland is 353, (0)43.
The country code and area code of Castlebar, Ireland is 353, (0)94.
The country code and area code of Dundalk, Ireland is 353, (0)42.
The country code and area code of Drogheda, Ireland is 353, (0)41.
The country code and area code of Naas, Ireland is 353, (0)45.
The country code and area code of Athlone, Ireland is 353, (0)90.
The country code and area code of Tralee, Ireland is 353, (0)66.