Masham was historically a large parish in the North Riding of Yorkshire. As well as the town of Masham the parish included the townships of Burton-on-Yore, Ellingstring, Ellington High and Low, Fearby, Healey with Sutton, Ilton cum Pott and Swinton. In 1866 the townships became separate civil parishes. Masham Moor was an area of moorland to the west of the parish bordering the West Riding, common to the parishes of Masham and East Witton. It was divided between the parishes of Healey, Ilton cum Pott and Colsterdale in 1934.