Portmarnock is in the Electoral Division of Malahide, in Civil Parish of Portmarnock, in the Barony of Coolock, in the County of Dublin

The Irish name for Portmarnock is Port Mearnóg

Portmarnock is on Logainm.ie: Portmarnock.


It is located at 53° 25' 11" N, 6° 9' 9" W.


Portmarnock has an area of:

Nationwide, it is the 16802nd largest townland that we know about

Within Co. Dublin, it is the 149th largest townland


Portmarnock borders the following other townlands:


We don't know about any subtownlands in Portmarnock.

Genealogy / Ancestry / Records Search

Curious to see who lived in Portmarnock in the past? Maybe even seeing scans of their handwritten census returns?

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Portmarnock was added to OpenStreetMap on 14 Aug 2015 by brianh.