The modern parish of Banagher is contained more or less between the rivers Roe and Faughan and backs into the highest peaks of the Sperrin mountains with their rounded, undistinguished summits shaped by the glacial sheets of the Ice Age. Geography dictates the main industries, agriculture and sand quarrying, and some of its pastimes, like fishing and hill walking.

The parish as we know it is made up of the medieval parish of Banagher along with portion of the medieval parish of Boveva and part of the townland of Tireighter and Park, formerly in the parish of Cumber. It is noteworthy for the number of ancient monuments which bear testimony to centuries of habitation, standing stones, chambered graves, holy wells and churches.