Based on data in OpenStreetMap, here is a list of townlands in the Electoral Division / ED / District Electoral Division of St. Mary's.
St. Mary's is in Co.
St. Mary's is not matched up to Logainm.ie yet.
It is located at 53° 42' 32" N, 6° 21' 7" W.
St. Mary's has an area of 2.9 km² / 722.5 acres / 1.1 square miles.
There are 2 townlands that we know about in . This represents 21.3% of all the area in .
St. Mary's was added to OpenStreetMap on 13 Feb 2017 by Teester.