Dublin 15 Dublin 15 Dublin 15, also rendered as D15, is a postal district in the suburbs of Dublin in Fingal, Ireland. It is west of the GPO in Dublin city. Dublin 15 covers a large area, rising from the River Liffey to at the townland of "Cloghran" near the "Rosemount Business Park". The district is bordered by County Meath to the west and the north-west and by the "Ratoath Road" to the north-east. The land between the "Ratoath Road / Cappagh Road" and the M2 / N2 road lies in the "Dublin 11" postal district. The townland of Ashtown and the
Transport in Dublin Dún Laoghaire harbour from both Malahide and Howth in the north which en route to Dún Laoghaire goes straight the city centre. It is also served from Greystones in the south. Both domestic and international air traffic in Dublin is served by Dublin Airport which is located 10 km north of Dublin city centre in Collinstown and is accessible by car or bus. It is the busiest airport by far in Ireland with 27.9 million passengers in 2016, making it the 15th busiest airport in Europe with flights to other airports in Ireland, Europe, North America, Africa and the Middle