Post Office – Isle Of Tiree, Cornaig – Opening Hours & Branch Details Post Office is found on Cornaig, about a 1.79 mile distance north-west from the centre of Isle Of Tiree (not far from Tiree High School). The branch is situated in a convenient location to serve the customers of Balephuil, Kilkenneth, Mannel, Hough, Heylipoll, Balemartine, Ballevullin and Baugh. Today (Friday), its branch hours are 9:00 am until 5:00 pm. On this page, you’ll find information about Post Office Isle Of Tiree, Cornaig, including the opening hours, address info or contact number.