Cuby is situated in the Deanery and Hundred of Powder. It is bounded on the North by Creed, on the East by St Ewe and St Michael Caerhays, on the South by Veryan, and on the West by Cornelly and Probus. The parish is now actually referred to as Cuby-with-Tregony St James; the parish includes the borough of Tregony. Cuby had the Church which was used by Tregony and was united with Cuby. Cuby-with-Tregony incorporated Cornelly parish in 1934.