The map of Co Armagh shows that most of the McCanns were living along the southern shore of Lough (Lake) Neagh - with the greatest concentration of them in the civil parish of Drumcree. McCanns are probably as thick as leaves on the ground in the town of Portadown, Co Armagh.

It can also be seen that there was also a large group of McCanns in Forkhill in the southern part of the county. There were an additional 30 McCanns just across the border in Carlingford, Co Louth.