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 51° 54' 57" N, 8° 31' 41" W.
St. Mary's has an area of 19.2 km² / 4,732.4 acres / 7.4 square miles.
There are 12 townlands that we know about in . This represents 88.4% of all the area in .
St. Mary's was added to OpenStreetMap on 1 Feb 2017 by Teester.