We don't know what Electoral Division Castlemahon is in. Castlemahon is in the Civil Parish of Ballyculter. Castlemahon is in the Barony of Lecale Lower. Castlemahon is in Co. Down

The Irish name for Castlemahon is Caiseal Mathúna

Castlemahon is on Logainm.ie: Castlemahon.


It is located at 54° 20' 43" N, 5° 36' 19" W.


Castlemahon has an area of:

Nationwide, it is the 19775th largest townland that we know about

Within Co. Down, it is the 745th largest townland


Castlemahon borders the following other townlands:


We don't know about any subtownlands in Castlemahon.

Genealogy / Ancestry / Records Search

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

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Castlemahon was added to OpenStreetMap on 18 Feb 2015 by Stephen_Co_Antrim.